text:
Arduino/ESC Programming

ESC stands for "Electronic Speed Control". These are found in remote control aircraft that need to spin their motors at different speeds.

Target Audience
Someone who has loaded the arduino IDE, blinked pin 13 and has a speed controller plus a motor and power supply.

Starting Point
Motor, ESC, arduino and Potentiometer mounted on a board.

Replication Goal
Wire up everything, download knob arduino example program, and turn Potentiometer knob to start, stop and change motor speed.

Procedure Mount Everything on a Board ... Be Safe !!!

 * 1) Step: The DC brushless outrunner motor spins practially everything that one could touch, it comes with mounting brackets that need to be screwed into some wood. Sometimes a hole needs to be dug into the wood.
 * 2) Step: The wires will break inside the ESC and ruin it if the ESC is left dangling. Mount the ESC on some wood.
 * 3) Step: The arduino has holes in it to mount it on wood
 * 4) Step: The Potentiometer will have be mounted so that one hand can be used to control the motor speed

Procedure Connect Power wires
The ESC handles the most dangerous current that flows through it to the motor. Hook the motor up first and then power to the ESC.
 * 1) Step: Find thick red and black wires that supply power to the ESC
 * 2) Step: Leave the ESC disconnected from power to prevent motor accidentally starting up
 * 3) Step: Find bundle of two or three thick wires that power the motor
 * 4) Step: Leave motor disconnected unless it is in use, motors have randomly started before and scared everyone
 * 5) Step: Find the bundle of three tiny wires glued together attached to the ESC: (brown is ground, red is power out, orange is data in)
 * 6) Step: Connect the three tiny wires to the arduino: orange goes to a pwm digital pin, brown to ground and red to Vin.

Procedure Connect the Potentiometer
Wire color varies between ESCs, here are some common colors and functions (note that because both power and control may have the same voltage on some ESCs they may be interchangeable):
 * 1) Step: Find a pot, solder a pair of solid wires to the outside terminals of the pot, and one wire to the center
 * 2) Step: run the center wire to arduino analog 0, and the pot edges to GND and Vin
 * 3) Step: connect the other wires to the ESC connector so that red goes to Vin and brown goes to GND
 * Power/Positive Voltage -> Red
 * Ground -> Black, Brown
 * Control -> White, Orange

Procedure Power on Check
Connect power to the ESC and: Various ESC's and motors are going to behave slightly different. Some may not chirp or twitch their motor.
 * listen to a chirp noise from the ESC, this means it has powered on and found the motor
 * watch the motor, it may twitch when initially powering on, this is the ESC using back EMF to figure out which way the motor is going to rotate
 * look at the LED's on the arduino to make sure it is alive

Try to find the Manual. The trouble is most manuals document how to use a remote control and remote receiver connected to the ESC rather than just how the ESC itself works. After looking through several ESC manuals it appears that the power on step sequence (maximum) could be:
 * power on
 * spin
 * determine number of cells in the lipo
 * choose the braking system

Procedure to start motor and control speed
These steps require fiddling. So here is some background: The reason for the potentiometer is to vary the pulse width and pauses. Just start wiggling the potentiometer back and forth. The ESC may chirp two times or three times, or try to communicate with you in morse code. Who knows.
 * ESCs require pulses to be sent to them 50 times a second or 50 Hz.
 * Pulses can have different widths: from about 0.5 ms to 2.5 ms (millisecond).
 * A sequence of various pulse widths, timed pauses and then new pulse widths causes the motor to move and change speed.
 * The exact sequence is usually not documented
 * 1) Step Download the knob program into the arduino
 * 2) Wiggle potentiometer.

title: Arduino/ESC Programming


text:
User talk:Sönke Rahn

 Hello Sönke Rahn, and welcome to Wikiversity! If you need help, feel free to visit my talk page, or contact us and ask questions. After you leave a comment on a talk page, remember to sign and date; it helps everyone follow the threads of the discussion. The signature icon in the edit window makes it simple. All users are expected to abide by our Privacy policy, Civility policy, and the Terms of Use while at Wikiversity.

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license: Creative Commons - Attribution Share-Alike - https://creativecommons.org/licenses/by-sa/4.0/

title: User talk:Sönke Rahn


text:
User talk:LebronJames23

Plumber Petersham
Whenever you think of local plumbers, you often restrict your thought to toilets and kitchen sinks, however professional and certified local plumbers possess a much more to offer compared to plunging clogged empties. The actual profession is full of skilled employees that attain rigid certification in order to execute their own work

These days the plumbing professional will a lot more which deal with your home kitchen sink in a draining predicament. These professionals of course cope with cellular phone as well as repair associated with plumbing with regard to drinking water, but they also cope with cellular phone and repair of pipes for gasoline, sewage, and waste materials water amongst other things that may ultimately deal with conventional requirements. It, however, takes a much more than a small handy man skill to own the title and license so that you can practice this particular profession.

Within this profession, most start because apprentices, meaning these people function under a licensed expert inside a kind of paid on the job instruction while they earn hours credited toward a accreditation. Once the instruction is acquired, there are exams to pass through, tests to consider, multiple qualifications to see before anyone can promote as well as charge with regard to his providers as a licensed professional.

Where can you discover these individuals working? Obviously, there is the small company component part of the profession for that typical home phone, but local plumbers are a significant part of building plans, and you will locate them working closely in any and all sorts of brand new building projects. These people operate in conjunction with electricians as well as architects from the planning of a project up to the actual finished project. If you reside in a new building, it is beneficial to obtain info on the firms that were caught through the construction company to assist build your home.

To start, you will likely have some kind of home warranty with the businesses who were in active in the creating, and even if you are outside of a preliminary warranty period, the electrical installer, plumbers, and other professionals who helped to plan and make your house are more qualified to trobleshoot and fix.

In addition to the places mentioned previously, a few of these workers work along with gas lines such as those that energy your stove, stove, fireplace, or water heater, and some even mix approve in the heating system as well as atmosphere occupation since many of the issues that may arise in either of these areas may need the expertise of someone who is familiar with the functions and functions of each.

If you're looking for a few operate in your house or perhaps in your business, question qualifications before you decide to ultimately employ somebody's support. These types of professionals are experienced to masterfully and resourcefully repair any problems that might arise, but it is vital that you realize that you are searching for not only a glorified handy man when you are facing a major issues.

Find a Plumber petersham that has experience in fixing a variety of related problems. For more information, visit http://plumberspetersham.com.au/.

title: User talk:LebronJames23


text:
User:Rikki~enwikiversity

Rikki is has been a teacher for 22 years. He teaches Spanish at a high school and a community college.

title: User:Rikki~enwikiversity


text:
Plumber petersham

Whenever you think of local plumbers, you often restrict your thought to toilets and kitchen sinks, however professional and certified local plumbers possess a much more to offer compared to plunging clogged empties. The actual profession is full of skilled employees that attain rigid certification in order to execute their own work

These days the plumbing professional will a lot more which deal with your home kitchen sink in a draining predicament. These professionals of course cope with cellular phone as well as repair associated with plumbing with regard to drinking water, but they also cope with cellular phone and repair of pipes for gasoline, sewage, and waste materials water amongst other things that may ultimately deal with conventional requirements. It, however, takes a much more than a small handy man skill to own the title and license so that you can practice this particular profession.

Within this profession, most start because apprentices, meaning these people function under a licensed expert inside a kind of paid on the job instruction while they earn hours credited toward a accreditation. Once the instruction is acquired, there are exams to pass through, tests to consider, multiple qualifications to see before anyone can promote as well as charge with regard to his providers as a licensed professional.

Where can you discover these individuals working? Obviously, there is the small company component part of the profession for that typical home phone, but local plumbers are a significant part of building plans, and you will locate them working closely in any and all sorts of brand new building projects. These people operate in conjunction with electricians as well as architects from the planning of a project up to the actual finished project. If you reside in a new building, it is beneficial to obtain info on the firms that were caught through the construction company to assist build your home.

To start, you will likely have some kind of home warranty with the businesses who were in active in the creating, and even if you are outside of a preliminary warranty period, the electrical installer, plumbers, and other professionals who helped to plan and make your house are more qualified to trobleshoot and fix.

In addition to the places mentioned previously, a few of these workers work along with gas lines such as those that energy your stove, stove, fireplace, or water heater, and some even mix approve in the heating system as well as atmosphere occupation since many of the issues that may arise in either of these areas may need the expertise of someone who is familiar with the functions and functions of each.

If you're looking for a few operate in your house or perhaps in your business, question qualifications before you decide to ultimately employ somebody's support. These types of professionals are experienced to masterfully and resourcefully repair any problems that might arise, but it is vital that you realize that you are searching for not only a glorified handy man when you are facing a major issues.

Find a Plumber petersham that has experience in fixing a variety of related problems. For more information, visit http://plumberspetersham.com.au/.

title: Plumber petersham


text:
User:Rhorton4549/enes100/Helicopter

Link to team page.

Give instructor top 3 project choice list
Gave my top three choices for my next project. First was Helicopter, second was continuing Wind Tunnel, and third was Old Flat Screens. Ended up in Helicopter and hopefully the experience working with an Arduino and R/C servo will be useful on this project.

Write problem statement
Look through the existing problem statements. Find something not yet done on the project. Create a problem statement for it. Think of a new subsystem that needs to be built for the project. The goal is something simple, possible, for zero dollars.

Assign Task1
Tasks are typically done over the weekend. They are documented during the week, presented during the week and the next weekends work is negotiated during the week. Week 0 is the week that task 1 is negotiated. Record your individual task here. Plan on working on it during the weekend between week0 and week1.

Compare actual work done to Task1
Rationalize differences

Week1 Narrative

Monday we were unable to meet as a group so it wasn't until Wednesday that we were able to meet during class to discuss the project and what we as a group wanted to work on. Immediately, we went after the quad-copters as they are a highly visible aspect of the overall Helicopter project goals. Getting the quad-copter ready for flight was relatively simple save for one issue: charging the battery. While there are three of the quad-copters belonging to the department, they have been opened and experimented with by other groups and as a result, the accessories, including the chargers and power brick had been misplaced. While there were two power bricks that were immediately visible, one of them had an adapter on it that was for another country and could not be used. Mr. Foerster said that if we could find the third power brick, and if the adapter on it was for the U.S., then we could borrow a quad-copter for the weekend.

After about five minutes of looking through the bins of power bricks in the back, I found the third power brick with a US adapter on it. As there were batteries aplenty and an extra charger, I was able to take home the quad-copter to "test" over the weekend. Arriving home I did a web search for "Parrot AR Drone" and found the main website for the device by the company that produces them. On the page was a link to Tutorials which contained links to the User Manual and a FAQ along with a list of videos detailing unboxing, setup, and flight instructions for both indoor and outdoor. In addition, the main page also had a link to the free flight app in the iTunes store so that the drone could be controlled with an iOS device such as an iPhone 4. After charging one of the batteries and installing it into the drone, I fired up the iPhone app, connected to the drone's wifi signal, and then I had to wait as the drone's firmware required an update. After going through this procedure, the drone was ready for a test flight. Pressing takeoff on the iPhone screen resulted in the drone's rotors spinning up almost immediately and it lifted up off the box by about two feet.

Flying the drone is relatively simple but requires practice. The right joystick is multi-directional. When sliding to either the right or left, the drone will rotate in that direction. Up and down controls the vertical level of the drone while sliding between up/down and left/right will rotate will also increasing or decreasing altitude. The left joystick is for movement. Once pressing on it, tilting the iPhone forward will cause the drone tilt it's nose downwards and be propelled forward. Tilting the phone backward results in the nose tilting upwards, and being propelled backwards. Tilting either left or right cause the drone to move in that direction. These controls apply if you are standing behind the drone with the camera facing away from you and are reversed if you are standing in front of the drone with the camera aimed at you.

My flight consisted of learning these controls and learning the responsiveness of the drone to my input. There were some bumps up against bookshelves and also against the ceiling (I was flying in a basement) and once, one of the propellers got caught under a bookshelf and I was unable to get it to extricate itself and it declared an emergency and crashed. The indoor hull was fairly resistant to these incidents and showed no signs of damage. After a few minutes of practice, I had the drone rapidly accelerate towards a fireplace, stop, then rapidly accelerate back towards me and having it stop only a few inches from my noggin. The amount of air being moved seems quite large as there is a serious draft from both above and below the drone. I would like to try and record the movement of air through the propellers using a smoke machine and this may shed some light on how any drone built in the future may need to move.

Week1 Peer Review
Go to each team mates weekly summary wiki page. Read their activities and narrative. Then go the associated discussion page. Say something positive on this page. Try some constructive criticism. Add your name and a signature ~ by entering four tildes in a row to create a time and date stamp. Create a new category if another team mate has already commented here.

Assign Task2
Practice flying the drone indoors and if the weather and time permits, attempt flying outdoors.

Compare actual work done to Task2
Flying outdoors proved problematic due mostly to the fact that it was very cold outside and without the outdoor hull I did not feel comfortable attempting flight outside. Flying indoors did not prove any better as during one takeoff, the drone lifted off then immediately proceeded to accelerate upwards into the ceiling without any user input. After colliding with the ceiling, it dropped back down to the floor with a clearly heard impact. After another two flight attempts during which the drone responded fairly well to commands, it again decided it wanted to fly into the ceiling, so I stopped all further flight operations for the weekend. I did however record video of the drone hovering and also demonstrating it's self-stabilization capability

Week2 Narrative
Upload photos to wikimedia. Upload video to youtube. Convert all spreadsheets, documents, and presentations to wiki format and create wiki subpage of your page for each of them. Link to them here in a narrative that tells a story. High light the problems (engineering problems) you had and how you solved them.

Week2 Peer Review
Go to each team mates weekly summary wiki page. Read their activities and narrative. Then go the associated discussion page. Say something positive on this page. Try some constructive criticism. Add your name and a signature ~ by entering four tildes in a row to create a time and date stamp. Create a new category if another team mate has already commented here.

Assign Task3
Record what you are planning on doing for the team during the weekend between week2 and week3 of the project here.

Compare actual work done to Task3
Rationalize differences

Week3 Narrative
This week was mostly devoted to other courses that have upcoming exams but I did find time to recheck the settings for the esc_easy program. In prior tests, a single value, when changed to 30 allows for communication between the motor and ESC allowing the ESC to instruct the motor. I changed the value several times in multiples of 15 from 0 to 90 with anything over 30 resulting in no response from the motor. 30 seemed the only value that resulted in any response from the motor when a speed was sent to the ESC. This is the code here that I was using. This code was given to me during my previous project by Mr. Foerster and was used in the spring of 2011 by the group KnapoJacob. I modified the value 85 in this section here to a value of 30.

void setSpeed(int speed){ //these are the values you change ie: 60,180 or 30,180 //I used 85 to 180 becuase it gave me speed from the values 65(off) to 90 and i wanted a 25 speed gradient int pulse = map(speed, 0, 100,85, 180); myservo.write(pulse);

With this setting changed, when entering in speed values of any multiple of 1-9, resulted in gradually increasing speeds, entering any multiple of 10 set the speed to 0, although it initially set the speed to 49 then dropped it to 0. I attempted to attach a propeller to the motor shaft but working with the hardware included with the motor and lack of instructions made this difficult.

Week3 Peer Review
Go to each team mates weekly summary wiki page. Read their activities and narrative. Then go the associated discussion page. Say something positive on this page. Try some constructive criticism. Add your name and a signature ~ by entering four tildes in a row to create a time and date stamp. Create a new category if another team mate has already commented here.

Assign Task4
Mount the motor to a wood block and practice with the AR drone outside and record the flight.

Compare actual work done to Task4
The plan for the week was to mount the motor to a wooden block in order to have a more stable platform for testing purposes. As the portion of this motor that spins is both the top and bottom, the bottom part of the motor would have to be recessed into the wood block. The first attempt at this was to use a standard drill bit to drill a hole. With some assistance from my dad, I held down the wood block while he wielded the drill. This did not go over well as the hole was not wide enough and attempting to expand it became somewhat dangerous for the person holding the wood block. As a result, it was decided that a different bit was needed. Later in the day, after taking measurements of the motor, an appropriate bit was found and used to create another hole on another side of the block. This worked out much better and the motor dropped in with only a small amount of room around it. Using some small wood screws, I secured the motor to the block although only three could be used to as one of the mounting holes was not centered fully over the wood. With the motor attached to the block, I attached the propeller to the shaft and connected the motor to the Arduino. In addition, I used electrical tape to wrap the power leads to prevent possible electrocution. The initial test with the motor mounted and attached propeller resulted in the propeller nearly flying off the motor. Tightening the nut further resulted in the second test being more successful. The propeller stayed secure while running through different speed values and although there was some amount of rattling, the motor stayed put. I recorded video of a test run that shows the propeller staying on, the sound of the motor varies with the speed input although it does not very by much. With the motor mounted, the next step may be to mount a potentiometer and vary the speed of the motor using that.

In addition, I took an AR Drone home again, this time with an outdoor shell that was found in a cupboard in the supply room. This shell covers only the main body of the drone leaving the four propellers free. After charging the batteries overnight, I took the drone outside around two in the afternoon and installed one of the batteries. Setting the drone down on the ground, I launched the drone into the air and attempted several different maneuvers. The first flight was just a warm up but it ended up with the drone hovering in the next door neighbor's yard unresponsive to commands. At the very least, it was not responding to commands very well. It was hovering at near maximum height, but when titling the phone forward, it did not respond and I had to walk over to stand near it in order for it to respond. The second flight was better, practicing some wild maneuvering, but this ended worse than the first flight. Trying to fly the drone requires watching either the drone or the camera on the drone and I couldn't always gauge distances, especially when the drone was higher in the air. This flight ended when the drone flew into a tree, cut power, and dropped to the ground, hitting several other branches on the way. Luckily, there was no damage as a result, with the outdoor shell protecting the main part of the drone and the props showing little wear.

Week4 Narrative
There was not much accomplished this week other than mounting the motor and focusing on finishing the team page. There was limited flight time available with the drone due to studying for exams and the space intended for flying was being used for parking. I returned the mounted motor along with the Arduino, wiring, and power supply and held on to the drone for additional testing. Most of the flights took place outdoors along the street by my house where there were no obstructions such as trees. Increasing the angle of attack led to increased speeds and sharper turns outdoors but required a higher level of concentration to keep the drone aloft.

Week4 Peer Review
Go to each team mates weekly summary wiki page. Read their activities and narrative. Then go the associated discussion page. Say something positive on this page. Try some constructive criticism. Add your name and a signature ~ by entering four tildes in a row to create a time and date stamp. Create a new category if another team mate has already commented here.

Complete Project Page
Follow the "project done" format.

Start Next Project Week0 activities
During this week you will perform the week0 activities of the next project.

title: User:Rhorton4549/enes100/Helicopter


text:
Helicopter/Howard Community College/Fall2011/550 Helicopter

Problem Statement
Learn to fly the Parrot AR Drone and put together a R/C motor and ESC and mount it.

Team Members
RHorton

Truongdat

FelHariri

WFalak

Summary
Weekly Reports

Poster

Flying into the Danger Zone...

Story
The full team did not meet until Wednesday of the first week where we took a look at the quadcopter. Doing a quick web search pointed out the app that is used to control the drone. Using the app, Rhea tried to control the drone but after the initial connection the signal would be lost and the drone would be stuck hovering without any control. The group moved on to working with the Arduino, ESC, and brushless motor. While Rhea had a setup leftover from a previous project, Waleed and Truong each received a motor and ESC from Mr. Foerster and needed to put it together. Unfortunately, the butt splices did not seem to work as well for them as it did for Rhea. The week ended with everyone focusing on either the arudino and ESC/motor or working on the quadcopter.

Working with the Aruduino and ESC/Motor became the primary focus for the team with the secondary being working on flying the quadcopter and finding ways to improve safety. While programming the Arduino to control the motor was not a problem, although the length in time for the motor to respond was, getting the motor mounted was. Brought up as a safety issue by Mr. Foerster, Rhea, WFalak and Truong worked on mounting their motors. Both succeeded through trial and error, resulting in better odds they would keep their fingers. Faissal continued work on improving safety for flying the AR Drone, especially for first-timers. He measured out a possible space behind the classroom outside for a area that would covered by netting that allows for safe flying for both the person controlling the drone and the drone itself.

Decision List

 * Explore the functions of the Parrot AR Drone
 * Connect the ESC and brushless motor
 * Butt splices or soldering
 * Power supply for ESC and motor
 * Mounting the motor
 * Material for flight cage

Material List

 * 1) Parrot AR Drone
 * 2) Apple iPhone 4
 * 3) Hacker Brushless A10-13L
 * 4) Thunderbird-9 Brushless Speed Controller
 * 5) Soldering Iron
 * 6) Electrical Tape
 * 7) Duct Tape
 * 8) Butt Splices

Software List

 * 1) Arduino Programming Software
 * 2) MS Paint

Time
Flight Time: 72 min

Motor Mounting: 4 Hours

Programming Code: 3 hours

Measuring for Flight Cage: 2 hours

Total time: Approx. 10.2 hours

Tutorials
Connecting the ESC and Motor required different methods for each team member as the butt splice method did not seem to work a second time. One option became to simply cut off the ends of the connectors for the motor, expose the wire, and bind them together with the ESC connectors. This still had the problem of being exposed wiring so electrical tape is the best option to use to wrap the wires while still allowing the flow of power and commands from the ESC. The other option is similar but requires soldering the ESC and motor connectors together then wrapping them with electrical tape. The key is to ensure that the connection between the two ends is solid while also ensuring that the user is protected from possible electrocution.

Flying the quadcopter takes practice and the tutorial videos on the AR Drone site provide good instruction on the basics of flying. The main key is practice flying to the point that the user doesn't require looking down at the device to see the controls. Focusing on the drone is key to advanced flight. If and when the practice area comes together, initial flights should focus on flying in circles, back and forth, and changing altitude while practicing the former.

Next Steps
The next phase of this project should be focusing on completing the flight area outside so that future pilots can have an area to test their skills without fear of breaking the drone or injuring spectators. Investigation into the battery problem and ways to extend flight time through augmenting the battery or removing unnecessary features from the drone to improve battery performance. As for the Arduino and ESC/Motor, better understanding the control signal being sent between the ESC and the motor would make it easier to write code that would allow for more precision in control over the speed.


text:
User:Truongdat120891/enes100/Helicopter

Link to team page.

Give instructor top 3 project choice list
Typically the instructor picks teams. Students send the instructor their top 3 choices. The project choices are typically those found at Category:General_Engineering_Projects. The instructor tries to put students in the project of their choice. Put your top three choices here after they are used to assign you to this project. Create a link to the project root and to where your team will be working.

Write problem statement
Look through the existing problem statements. Find something not yet done on the project. Create a problem statement for it. Think of a new subsystem that needs to be built for the project. The goal is something simple, possible, for zero dollars.

Assign Task1
Tasks are typically done over the weekend. They are documented during the week, presented during the week and the next weekends work is negotiated during the week. Week 0 is the week that task 1 is negotiated. Record your individual task here. Plan on working on it during the weekend between week0 and week1.

Compare actual work done to Task1
I make a brushless motor to work with an arduino uno.

Week1 Narrative
My goal is trying to make a helicopter out of arduino, brushless motor. So i decided on week 1 i will try to control the brushless motor with an arduino. First, i connect the wire of the motor together with it's part. After that This is the video of my really first attempt. i load a program i found online into the arduino. I couldn't read what did the program said. There is no pin or anything. But i tried all the pin. Though i manage to get the right pin i want, it is pin 0,1,2. Here is the program So i did get some noise out of the motor but that doesn't mean anything. So i came up with another code. But i got a problem when i connect the arduino back to the computer. it won't work no matter what i do, even though it worked fine before the first test. Here is the video of my problem and how i solve it, the problem turned out to be i wasn't chose the right device. So i went to tool then i selected arduino duemilanove 328. And it worked. Then after i upload another code. i went for testing, but this test is even worst than the test before. Not even a single sound come out the motor. Afterward i found out my wiring wasn't right. So with the same code, i changed the way i wired it and the motor making sound again. I keep changing the code but the motor just keep making constant sound. Then i found an example code in the arduino program. go to example and select the code sweep for the first time the arduino move. I was quite happy with the result but the problem is the motor doesn't act the way the code command. In the next morning, i accidentally change the source of power, from the usb gate to the 9 volt input. And here i go look at the brushless motor run pretty fast. So i conclude the problem is i need more powerful source of electricity.
 * DatTruong/Howard/code and here is the video of the 1st testing http://www.youtube.com/watch?v=WL21Q7Z1_jQ&feature=youtu.be
 * http://www.youtube.com/watch?v=O4vU1akkedU&feature=youtu.be
 * http://www.youtube.com/watch?v=AtIrkab5iAI&feature=youtu.be and here is the codeDatTruong/Howard/code2
 * http://www.youtube.com/watch?v=NcUpwAvNRsY&feature=youtu.be
 * http://www.youtube.com/watch?v=M-KsGV1zo-o&feature=youtu.be the program is in the arduino example( go to file, go to example, then servo, and choose sweep)
 * http://www.youtube.com/watch?v=tDsr_2tWwUY&feature=youtu.be ( this is the same code as 4th test)

Assign Task2
on next week. i will try to control the brushless motor since this is just an example code

Compare actual work done to Task2
I can change the order of spinning for the motor. i was be able to the motor to spin slower or faster by changing the code in the arduino. Also i was be able to experience some dance movement with the drone.

Week2 Narrative
First i wasn't be able to figure out why the motor spinning isn't match with the code. I found out the code i used is the code with a potentionmetter( this device help you to control the speed of the motor). But i don't have the potentionmetter so i tried to control it by changing the code in the arduino. this way is more complicated and more inconvenient than using the potentionmetter. So after a day or two poking with the example code. i was be able to control the motor with different speed, different pattern. this is the last code i used for it codefinal.but there is still something that i don't really understand after put this code inside the arduino, i need to wait for around a minute or two to actually get the motor to working. I'm still trying to figure it out. Also i tried different type of fan wing. i Have two kinds, the first one is two big and it really hard for the motor to move, the second one is just too small and it can't give a good enough force to actually lift up just the motor.

http://www.youtube.com/watch?v=bp0LI6brcF0&feature=youtu.be http://www.youtube.com/watch?v=zwVQIDlBRzw&feature=youtu.be( even though it wasn't be able to spin properly but the fan is just too heavy so i will try to mount it down to something so it won't be run off)
 * This is the video of the drone dancing
 * This is the video of the big fan

Assign Task3
i will try to improve the fan condition by adding a mount, also i will try to used the potentalmetter for better experiment

Compare actual work done to Task3
i figured out a way to mount up the motor. So i did try to mount it up even though its fail, but i know this way will work. Also i discover a really interesting things about the motor and the arduino.

Week3 Narrative
At first i was trying to mount the motor on the wooden block. But this way doesn't work since the motor spin both top and bottom. I was trying to cut off the washer on the motor so i can mount it upside down. But when i think about it, it wouldn't be a good ideal. I found a better way is to mount it on an empty box ( i used a soap's box). So the washer will stick out of the box, and the body is moving freely inside the box. But the wire wasn't strong to hold up the motor level on the box when it's spinning. So i think of i will give the wire some support by using some duck tape and tape over the wire. after this it gave the wire a very strong support, i can feel the motor is hold fix, when i tried to shake the motor it didn't move much. But when i put everything together, the motor wasn't working. I didn't heard the beep sound so i concluded something is wrong with the wire. i discovered the tape isn't electric tape. So i tried to remove the tape and its really gave me a hard time to remove it. I ended up break the wire. Then i tried to connect it back together. The motor did work again. Then i found out the behavior of the motor when i remove the pin 9, then connected it back to pin 9. After that i tried to used another duck tape to see if it's working but none of my tape is working. This is the behavior i got from the motor. I didn't figured out why it did that. http://www.youtube.com/watch?v=gBvJNQo5aek

Assign Task4
I will tried complete the mounting by using electric tape, and i will include the potentional meter. I wasn't be able to include it in this week because the mounting is still not done.

Compare actual work done to Task4
i had successfully mounted and test out the power source for the motor.

Week4 Narrative
When i mounted the motor on the wooden board, because the second hole wasn't deep enough to put the motor inside, so i had to go with the first hole, and because it was too big so i just mounted two legs of the motor. After that i used the arduino to test if the motor still working, and it is working fine. When I try to included the potention meter, i was a little bit confuse of the wire, which one goes to which one, I went to the internet and search i was be able to find this link. http://cbrobotics.com/2010/11/make-a-potentiometer-control-a-servo/. But the wire was directly from the motor to the knob, so i tried to figure out which wire was the right wire to give out the permission for the servo. Finally, i got the motor to work with the knob, but the electricity clearly wasn't high enough, so i used a higher sources of power, But this power was a little too powerful for the motor, it heat up the motor pretty fast, and the motor was acting weird also. So i came back to the old source is the wall adapter for the arduino. this is the video of me testing the motor. http://www.youtube.com/watch?v=8BSw6tfP774&feature=youtu.be

title: User:Truongdat120891/enes100/Helicopter


text:
User:Felhariri3680/enes100/Helicopter

Link to team page.

Give instructor top 3 project choice list
Typically the instructor picks teams. Students send the instructor their top 3 choices. The project choices are typically those found at Category:General_Engineering_Projects. The instructor tries to put students in the project of their choice. Put your top three choices here after they are used to assign you to this project. Create a link to the project root and to where your team will be working.

Write problem statement
Look through the existing problem statements. Find something not yet done on the project. Create a problem statement for it. Think of a new subsystem that needs to be built for the project. The goal is something simple, possible, for zero dollars.

Assign Task1
Tasks are typically done over the weekend. They are documented during the week, presented during the week and the next weekends work is negotiated during the week. Week 0 is the week that task 1 is negotiated. Record your individual task here. Plan on working on it during the weekend between week0 and week1.

Week1 Activities
Rationalize differences
 * Worked on the safety features of the Drone

Week1 Narrative

 * While one of my partners was testing out the parrot drone in class, sometimes the connection between the drone and the remote would time out. This will make the drone to fly uncontrollably which in turn forced my partner to stop it by hand. If, mistakenly, my partner was to put his hand between one of the four fans, he can get injured. So a "protective case of some sort needs to be attached to all four fans. The material that needs to be used should first of all be light so it does not affect the lift off component. Secondly, the material cannot block the airflow that comes from these fans.

Just a couple of companies that sell these guards online.
 * This Fan/finger guard website gives an array of choices of protective cases that can be used
 * This Fan guard seems easy to implement onto the drone.

Assign Task2

 * Hopefully by next week, the protective guard will be ordered.
 * Planning on starting my investigation on the connection between the remote and the helicopter. I want to try and find out why and from were the problem is coming from. Try a couple of experiments.

Compare actual work done to Task2
Rationalize differences

Week2 Narrative
Upload photos to wikimedia. Upload video to youtube. Convert all spreadsheets, documents, and presentations to wiki format and create wiki subpage of your page for each of them. Link to them here in a narrative that tells a story. High light the problems (engineering problems) you had and how you solved them.

Week2 Peer Review
Go to each team mates weekly summary wiki page. Read their activities and narrative. Then go the associated discussion page. Say something positive on this page. Try some constructive criticism. Add your name and a signature ~ by entering four tildes in a row to create a time and date stamp. Create a new category if another team mate has already commented here.

Assign Task3

 * Start designing outline for safety cage
 * Decide on what material can be used to install net

Week3 Activities
Rationalize differences
 * Checked out different material for the base of the net.
 * Decided on the diameters of the safety net
 * Analyzed ways in which the net may be supported on the terrace.

Week3 Narrative

 * 1) Material
 * My objective for this project changed completely. After presenting ideas to the class about safety shields on the fans that allow the plane to fly, A new objective was raised due to the fact that the drone that is being operated cannot hold any additional forces created by the weights of the shields on the drone. So the current objective is to create a safety net on the terrace right outside the engineering room.
 * The first type of material that came to my mind was foam paper glued to a certain kind of stand. However, foam was separated into different slices and the order of that much quantity may be a hassle. Another reason why foam might not be the best option is because the whole point of the safety net is so that the only thing inside the net during flight is the drone and not the person navigating it. If the foam was installed, the person flying the drone has no other choice but to stand inside. Finally, foam might damage the drone, even if it was minimal since it has that toughness in it.

=2 x pi x 7.5 =47 ft
 * The second material that came to mind was the net used on a trampoline as shown below. The net is designed for a trampoline that is 7.5 ft in radius. Thus, the circumference of the trampoline base and the most importantly the length of the net is equal to 2 x pi x radius.
 * Length of net=2 x pi x radius
 * This is perfect for a safety net since it does not affect the signal between the remote and the drone. The foam might affect it since it has some thickness in it. Additionally and most importantly, the person controlling the drone can stand outside the net. The only thing is that I need to get details on the height of the trampoline. I also need to measure the distance between the edge of the balcony and the rooftop above the terrace.

 * Another material that can actually be excellent for this project is the fish net. For almost the same price, we can get almost double the length of the trampoline net that I wanted to order online.

 * 1) Dimensions:

 * The Dimensions of the net on the side of the engineering balcony will be around 10x8 feet as shown in the photo which then comprises of a total area of 80 sq. ft.
 * To complete the safety net, a net has to be connected from the top of the net installed on the balcony to the roof of the engineering building.

Assign Task4

 * Order the Fish net material.
 * Will start working on building the safety net and getting the dimensions as accurate as possible so the net can be convenient for flyers.

Compare actual work done to Task4

 * Dimensions for the net set
 * Went to home depot and checked out the different pvc pipes

Week4 Narrative
The cost of the pvc pipe was a little on the high side. If more than one is to be configured outside on the balcony, the total price will be more than the assigned budget I would assume. In order to configure the pvc pipes, I decided to place them on the ground using a stand filled with heavy material such as water or rocks. Water is a good idea since they are already included inside the stand. On the bottom of these stands, I would place 4 roller wheels that would allow the net to move and be desplaced. Recycled PVC pipes might be a good place to start. Other hard and tough pipes may be used to hold the net in place howeer pvc until now is the best bet.

title: User:Felhariri3680/enes100/Helicopter


text:
User:Wfalak/enes100/Helicopter

Link to team page.

Give instructor top 3 project choice list
Helicopter

Hovercraft

Bridges

Write problem statement
Look through the existing problem statements. Find something not yet done on the project. Create a problem statement for it. Think of a new subsystem that needs to be built for the project. The goal is something simple, possible, for zero dollars.

Assign Task1
Tasks are typically done over the weekend. They are documented during the week, presented during the week and the next weekends work is negotiated during the week. Week 0 is the week that task 1 is negotiated. Record your individual task here. Plan on working on it during the weekend between week0 and week1.

Compare actual work done to Task1
Over the weekend, i started playing with Arduino so I can control my motor for my helicopter. I installed the program on my computer and then I connected the Arduino via USB cable. I tried to play some example which are built in but they started giving me this error. avrdude: stk500_recv: programmer is not responding. After that I watched an online tutorial and wrote a program which would blink the led for one second and then turn it off for 1 second and then repeat the process.

This is my program.

/* Waleed First Prog

int ledPin = 13;

void setup { //intialize pins as outputs pinMode(ledPin, OUTPUT); }

void loop { digitalWrite(ledPin, HIGH); delay(1000); digitalWrite(ledPin, LOW); delay(1000); }

It worked and was blinking after one second.

Week1 Peer Review
Go to each team mates weekly summary wiki page. Read their activities and narrative. Then go the associated discussion page. Say something positive on this page. Try some constructive criticism. Add your name and a signature ~ by entering four tildes in a row to create a time and date stamp. Create a new category if another team mate has already commented here.

Assign Task2
Over the weekend, I will try to understand Arduino basics and will try my best to control the brushless motor with Arduino and how I can manage it.

Compare actual work done to Task2
Over the week, me and my partner started testing with the quad copter and how we can control it. We got this iPhone app, which would connect to quad copter via WiFi and will and could do juggling and tricks while in air. But for the quad copter to fully perform its trick, it need a large space, because while the juggling, it hit the top of roof and went down.

Week2 Narrative
Here is the link to the video of the flight test.

Week2 Peer Review
Go to each team mates weekly summary wiki page. Read their activities and narrative. Then go the associated discussion page. Say something positive on this page. Try some constructive criticism. Add your name and a signature ~ by entering four tildes in a row to create a time and date stamp. Create a new category if another team mate has already commented here.

Assign Task3
This week, I will start to operate motor by using Arduino and use it to control its speed.

Week3 Peer Review
Go to each team mates weekly summary wiki page. Read their activities and narrative. Then go the associated discussion page. Say something positive on this page. Try some constructive criticism. Add your name and a signature ~ by entering four tildes in a row to create a time and date stamp. Create a new category if another team mate has already commented here.

Assign Task4
Make the motor run and controlled using Arduino.

Compare actual work done to Task4
This weekend, I tried to run that motor using Arduino, but there were number of problems i had to face. First, the Duemilanove Arduino stopped working. Its was not not responding when I tried to upload any code. I checked the port and board, but everything was perfect. But the Arduino was not responding. So I got a new Arduino. I exhchanged it with Arduino UNO. It was working perfectly, and was uploading codes alright. But then another problem came. I was suppose to attach the controller with motor with three wires. The connector that Mr. Forester gave me were not fitting perfectly with the motor. The tip of the motor wires was too big to go into the connector. So then I decided to solder the controller and motor wires together. They were also not not getting together easily. After lots of tries of soldering them together, I was not successful. So i decided to cut those big tips of the motor wires and expose the wires and joining them together manually. I was successful in that, and the wires easily joined. After that to power up the motor i put the connector wires into the slots of Arduino power. The slots were really narrow, so i could not put the wires inside. I got the single end wires and solder the wires of controller to it. The wires then could easily go into the Arduino power slots. After the wires fit perfectly and everything was attached, then came the part of mounting the motor on a platform where it could easily spin with the big fan and does not move. To mount a motor, first I had to find a wooden piece which should have a small width and large in length. After finding the wooden piece, I drilled a hole so the motor could go in and its edges stay outside so they could be mounted. First hole was too big and its edges were going through the hole. Then I got slightly smaller drill bit, and drilled a hole with that. It fit perfectly. Then I hot glued the edges of motor onto the wood so motor does not move when spinning at high speed. Then I took the electrical tape and put on the exposed wires so they do not mix with each other and mess with the motor. After that I put the controller on using plastic cable, by drilling two hole around the controller and taking through them. And then lastly, i attached the Arduino using screws. After it was all setup, I attached the usb to upload the code of servo-sweep on Arduino. After the uploading was done, I put the controller red and black wires into Arduino power slots of GND and 3.3V respectively. The motor was taking too much power, so my computer gave me error that the USB slot has stopped working because it can damage the computer. Then I attached the adapter to the Arduino so it could get its power from there. After that I witnessed a different behavior. The Arduino started beeping, and the motor started spinning but in weird manner. Here is the video of the test. The motor was spinning in a very weird way. Here is the link.

http://commons.wikimedia.org/wiki/File:Test_using_3.3V.ogv

After that, I changed the voltage of the motor, and put the red wire into 5V slot. The motor was giving me the same behavior but after sometime it started spinning really fast. The link in down below. http://commons.wikimedia.org/wiki/File:Test_of_motor_using_arduino.ogv

So I concluded that, it is because of the power. The motor is not getting enough power to spin fast. So, now I need to find alternative to get enough power for the motor to spin freely.

Week4 Peer Review
Go to each team mates weekly summary wiki page. Read their activities and narrative. Then go the associated discussion page. Say something positive on this page. Try some constructive criticism. Add your name and a signature ~ by entering four tildes in a row to create a time and date stamp. Create a new category if another team mate has already commented here.

title: User:Wfalak/enes100/Helicopter


title: File:Esc5.jpg


title: File:Esc6.jpg


title: File:Esc7.jpg


text:
User talk:George2001hi

 Hello George2001hi, and welcome to Wikiversity! If you need help, feel free to visit my talk page, or contact us and ask questions. After you leave a comment on a talk page, remember to sign and date; it helps everyone follow the threads of the discussion. The signature icon in the edit window makes it simple. All users are expected to abide by our Privacy policy, Civility policy, and the Terms of Use while at Wikiversity.

To get started, you may

 * Take a guided tour and learn to edit.
 * Visit a (kind of) random project.
 * Browse Wikiversity, or visit a portal corresponding to your educational level: pre-school, primary, secondary, tertiary, non-formal education.
 * Find out about research activities on Wikiversity.
 * Explore Wikiversity with the links to your left.

 * Read an introduction for teachers and find out how to write an educational resource for Wikiversity.
 * Give feedback about your initial observations
 * Discuss Wikiversity issues or ask questions at the colloquium.
 * Chat with other Wikiversitans on #wikiversity-en.
 * Follow Wikiversity on twitter (http://twitter.com/Wikiversity) and identi.ca (http://identi.ca/group/wikiversity).

You don't need to be an educator to edit. You only need to be bold to contribute and to experiment with the sandbox or your userpage. See you around Wikiversity! --Abd 02:00, 13 November 2011 (UTC)

 * Thank you. I'm interested in contributing to 'versity and this will definitely help. --George2001hi 21:56, 13 November 2011 (UTC)

title: User talk:George2001hi


text:
Engineering Projects/Bridges/Howard Community College/fall2011/501 DAS 3

Currently BEING REVISED

Problem Statement
Bridges Phase III: The principle purpose of this third portion of this project is to actually build and load test the spaghetti bridge that was designed in the 1st and 2nd portion of the project (Phase I & II). Based on the design rules, the the bridge was designed to support the maximum amount of weight possible. It is our intent during this phase of the project to document the entire process of building the bridge and load testing. Please see the "Summary" for additional information regarding the specifications of the bridge as it was design and the method that will be used for load testing.

Team Members

 * DivaEngineer
 * Syed Sami Ahmed
 * Erik Smith
 * Kevin Saunders

Summary
The focus of the project is to actually build and load test the pasta bridge that was design in the previous project. In addition to that, we will document the entire process in an attempt to create a tutorial for the process/strategy of gluing the pasta pieces of the bridge together to create a strong bond. This tutorial can potentially be used as a source of information for future teams attempting to design a pasta bridge and eliminate the frustration of trying to figure out the correct method of bonding the pasta pieces in such a manner that will actually contribute to the overall strength of the bridge. We have used previous design max loads as a standard for our design and will follow the plans created for putting the bridge together. Each week our team will meet to work on the completion of the build as it will take quite a bit of precision to get it done. The progress of the project can be viewed via the links below of the Team Weekly Reports.

 * Team Weekly Reports
 * /Week 0 (November 7 - November 13, 2011)/
 * /Week 1 (November 14 - November 20, 2011)/
 * /Week 2 (November 21 - November 27, 2011)/

Poster
This is a simple pony truss, the easiest to make with spaghetti.

Story
Esmith1993 joined for the final 4 weeks of the project and caught up with the idea of a spaghetti bridge. K.saunders joined last second to contribute his findings on failing force of spaghetti and linguine in relation to length of noodle. DivaEngineer and Sahmed1890 already constructed pieces of the spaghetti bridge and were just continuing construction.Sahmed1890 used another piece of wood to cut through and make another load support. He then sketched a line on the wood to determine the dimensions of the wood according to the rules. He used the saw and made the wooden load support. After wiping it of the dust he then placed the hook in it and finished with it. As a result of the experiment, as the length of the noodle decreased the strength of the noodle increased. This can be used to better our understanding of why good bridges work and bad bridges fail. Because the torque is smaller on a shorter noodle it can withstand more force and resist twisting.

Decision List
Decisions made:
 * Zita Spaghetti
 * Individually created truss's and bring them together as a group to critique
 * Strategically place hot glue where extra support is needed.

Material List
Figuring out what to purchase, what to build, what everything costs is a huge part of engineering. Typically there is a list of materials in stock, materials that are ordered, materials that should be ordered next time there is money, materials that have not been fully justified. These issues are part of healthy management of the engineering lab but are associated with a particular college. The detail needs to be published in this "Done" form. However in the project root, just a list of materials is necessary.

Link to Glue gun tips

Link to Zita Spaghetti

Link to another long spaghetti

Software List

 * Google Sketchup
 * 123D

Time
Four week project; approximately 7 hours a week
 * 4x7=28 hours
 * Approximately 28 hours spent on this project

Tutorials
Because spaghetti noodles are so fragile and thin. You must first layout the project with wooden components and once your wooden blueprint works sufficiently you can then transfer over to the noodles and begin the construction of the actual spaghetti bridge. Many spaghetti noodles will be wasted without proper planning.

Next Steps
Next group should use either google sketchup or 123D to construct a blueprint of possible bridge structures, and either proceed to make a spaghetti bridge or use balsa wood as a starting point.

a


text:
User:Rhorton4549/enes100/Wind Tunnel/Code

esc_easy
// i used this code to find the pulse width for the esc. // to use it you have turn on the esc after you enter in s the change the speed down to 0 and that will //set the esc's range and and will allow the esc to speed up or down. Now esch esc will have a diffrent speed range and //you will have to find it.
 * 1) include

Servo myservo; int tspeed=90; //start speed int start=0;

void arm{ // arm the speed controller, modify as necessary for your ESC setSpeed(0); delay(1000); }

void setSpeed(int speed){ //these are the values you change ie: 60,180 or 30,180 //I used 85 to 180 becuase it gave me speed from the values 65(off) to 90 and i wanted a 25 speed gradient int pulse = map(speed, 0, 100,85, 180); myservo.write(pulse); }

void setup { Serial.begin(9600); Serial.println("Wait for your input! [s] to init..."); while(Serial.available <= 0) delay(1000); int incomingByte = Serial.read;

Serial.println("Start the system..."); myservo.attach(9); arm; delay(1000); Serial.println("Set Speed"); }

void loop { if(start==0){ setSpeed(tspeed); start=1; }else{ if(Serial.available > 0) { int incomingByte = Serial.read; if(incomingByte == 43)     // sends the character '+' tspeed++;                 // increases the speed else if(incomingByte == 45) // sends the character '-' tspeed--;                 // decreases the speed else if(incomingByte == 44) tspeed=tspeed-10;     //sends character ',' else if(incomingByte == 46) tspeed=tspeed+10;     // sends character '.' else if(incomingByte == 48) // sends the character '0' tspeed = 0;               // set the speed to zero else tspeed=incomingByte; if(tspeed < 0) tspeed = 0; if(tspeed > 100) tspeed = 100; Serial.print("speed is "); Serial.println(tspeed); } }     setSpeed(tspeed); delay(500); }

esc
// this uses the Arduino servo library included with version 0012

// caution, this code sweeps the motor up to maximum speed ! // make sure the motor is mounted securily before running.

 * 1) include

Servo myservo; int tspeed; //start speed

void arm{ // arm the speed controller, modify as necessary for your ESC setSpeed(0); delay(1000); //delay 1 second, some speed controllers may need longer }

void setSpeed(int speed){ // speed is from 0 to 100 where 0 is off and 100 is maximum speed //the following maps speed values of 0-100 to angles from 0-180, // some speed controllers may need different values, see the ESC instructions int pulse = map(speed, 0, 100,40, 180); myservo.write(pulse); }

void setup { Serial.begin(9600); Serial.println("Wait for your input! [s] to init..."); while(Serial.available <= 0) delay(1000); int incomingByte = Serial.read;

Serial.println("Start the system..."); myservo.attach(9); arm; // cycle; if(incomingByte == 115) { // s   Serial.println("Speed up Speed down"); cycle; //delay(1000); } Serial.println("Set Speed"); //Serial.println("Start loop..."); }

void cycle { int speed;

for(speed = 0; speed <= 100; speed += 10) { setSpeed(speed); delay(1000); } // sweep back down to 0 speed. for(speed = 95; speed > 0; speed -= 10) { setSpeed(speed); delay(1000); } }

void loop { if(Serial.available > 0) { int incomingByte = Serial.read; if(incomingByte == 43)     // sends the character '+' tspeed++;                 // increases the speed else if(incomingByte == 45) // sends the character '-' tspeed--;                 // decreases the speed else if(incomingByte == 44) tspeed=tspeed-10;     //sends character ',' else if(incomingByte == 46) tspeed=tspeed+10;     // sends character '.' else if(incomingByte == 48) // sends the character '0' tspeed = 0;               // set the speed to zero //   if(tspeed < 0) //     tspeed = 0; //   if(tspeed > 100) //     tspeed = 100; Serial.print("speed is "); Serial.println(tspeed); }    setSpeed(tspeed); delay(500); }


text: Template:Hanging indent

title: Template:Hanging indent


text:
User:KYPark/Etymology

A

 * /after
 * /arm

B

 * /balcony
 * /ball
 * /bar
 * /bat
 * /bath
 * /bellows
 * /book
 * /bridegroom
 * /bubble
 * /bucket
 * /bulge
 * /bull

C

 * /cap
 * /cube
 * /Cupid
 * /cycle
 * /cylinder
 * /cymbal

D

 * /dune
 * /dyke

E

 * /egg

F

 * /fellatio
 * /fire
 * /focus
 * /fool
 * /foot

G

 * /gel
 * /glass
 * /gold
 * /golf
 * /gondola
 * groom
 * /grow
 * /guitar
 * /gulf
 * /gum
 * /gut

H

 * /head
 * /heap
 * /hedge
 * /high
 * /hip
 * /hog
 * /hoof
 * /hoop

I

 * /ingle
 * /is
 * /isthmus

J

 * /jelly
 * /join

K

 * /kin
 * /kind
 * /king
 * /knee

L

 * /leaf
 * /lip
 * /loft

M

 * /make
 * /mamma
 * /manage
 * /march
 * /mare
 * /marshall
 * /mill
 * /mulberry
 * /mule

N

 * /nag
 * /nubile

O

 * /occident
 * /orient

P

 * /pipe
 * /pump
 * /pulmonic
 * /pyre

Q

 * /queen

R

 * /rule
 * /rune

S

 * /salad
 * /salon
 * /seed
 * /semen
 * /sour

T

 * /thick
 * /thin
 * /tide
 * /time
 * /toad
 * /top

U

 * /umbrella
 * /undulate

V

 * /victory
 * /video

W

 * /wall
 * /walk
 * /will
 * /wit
 * /woman
 * /womb

Y

 * /yellow
 * /yoke
 * /yule

title: User:KYPark/Etymology


text:
User talk:Salumenint

Salumenint 05:38, 13 November 2011 (UTC)

title: User talk:Salumenint


text:
User:Salumenint

Salumenint 06:01, 13 November 2011 (UTC)

title: User:Salumenint


text:
User talk:Gumerperu

Gumerperu 06:37, 13 November 2011 (UTC)

title: User talk:Gumerperu


text:
User:Gumerperu

Science + Health + Medicine - Gumerperu 06:42, 13 November 2011 (UTC)

title: User:Gumerperu


text:
Power Systems/Introduction

Power Systems is the study of generating, transmitting and distributing electricity from power generating facilities to customer ends.

title: Power Systems/Introduction


text:
User:KYPark/Etymology/cube

kubos

 * Ancient Greek κύβος

 * Etymology
 * Difficult to trace. The word passed to and from a number of languages (compare Latin cubus (mass, quantity)). Pokorny reconstructed Proto-Indo-European *keu(b)- 'to bend, to turn' (Pokorny:1959:588) although not generally accepted.

 * Noun
 * 1) square, cube
 * 2) die, dice
 * 3) chance
 * 4) (mathematics) cube, cubic number
 * 5) (anatomy) vertebra; hollow above the hip of cattle

cubus

 * Latin

 * Etymology
 * From Ancient Greek κύβος (kubos)

 * Noun
 * 1) A mass, quantity

cube

 * English

 * Etymology 1
 * From Latin cubus, from Ancient Greek κύβος (kubos).

 * Noun
 * 1) (geometry) A regular polyhedron having six identical square faces.
 * 2) Any object more or less in the form of a cube.
 * a sugar cube
 * a stock cube

 * Translations

title: User:KYPark/Etymology/cube


text:
Talk:Covalent bonding

What is the difference between Ionic bond and Covalent bond? Code07 13:40, 13 November 2011 (UTC)
 * It has to do with the degree of sharing of electrons. Consider the bonding between NaCl. Sodium gives up 1 electron and gives it to chlorine. Not really much sharing of electrons! But now you have two ions, a sodium ion Na+ and a chloride ion Cl- that attract each other because they have opposite charges. Hence, ionic bond. Now consider something like H2. The electrons in this bond are equally shared between the two atoms, so it's covalent. --HappyCamper 16:02, 13 November 2011 (UTC)

title: Talk:Covalent bonding


text: Engineering Projects/ComboLockPick/Howard Community College


text:
User:Zblaha2768/enes100/ComboLockPick

NZ< Link to team page.

Give instructor top 3 project choice list
1. Combo Lockpick

2. Tape Purge

3. Robot arm

Write problem statement
Unlocking a combination lock requires one of two things, either the combination or an ability to pick locks. This ability is not easy to learn, however, so a device that will be able unlock a combination lock could be substituted. The objective of this project is to make a device that can pick a combination lock.

Assign Task1
Research potential designs/ existing combolockpicks.

Compare actual work done to Task1
Spent more time looking over the lock/ taking it apart rather than research.

Week1 Narrative
I took apart the lock to see how it might function. Unfortunately, taking apart actually broke it, so little discovery was made. Tuesday was spent taking the lock apart, and Thursday was spent planning our next move.

Specifics on the parts:

The dial (pried off with a screwdriver)

A pin (kept system together, internals fell apart after it was removed)

3 colored discs (likely how the mechanism recognizes the combination)

A spring (probably meant for some form of mechanism, lock unlocked after this was removed)

There was a metal shield that prevented any real observation or tinkering with the internals. There was a small hole in this shield where the pin was, and so the hole was pried wider with a screwdriver. Not much wider, there were many other components that would not fit out of this hole.

Week1 Peer Review
Go to each team mates weekly summary wiki page. Read their activities and narrative. Then go the associated discussion page. Say something positive on this page. Try some constructive criticism. Add your name and a signature ~ by entering four tildes in a row to create a time and date stamp. Create a new category if another team mate has already commented here.

Assign Task2
Research and develop a mechanical system to open a combination lock.

Compare actual work done to Task2
Spent more time on research than development.

Week2 Narrative
Found an infographic (here[]) that shows how to solve a master lock easier than normal (100 possibilities rather than 64,000). Tested this process and it seem to work:

1. Pull up on latch, and twist dial. Lock dial should lock up on 12 numbers, record these.

2. Of those 12 numbers, 7 should lock up between numbers (for instance, 7.5 to 8.5) disregard these numbers.

3. Of the remaining 5, 4 should have the same number in the ones place (for instance, 2, 12, 22, and 32) disregard these.

4. The remaining number should be the final number in the combination, match this in the matrices in the infographic (click the link if the picture is not present), where the third row of each matrix is the third number in the series.

5. Try combinations using the first two rows in a matrix.

The matrices:

0-4-8-12-16-20-24-28-32-36

0-6-10-14-18-22-26-30-34-38

0-4-8-12-16-20-24-28-32-36

1-5-9-13-17-21-25-29-33-37

1-7-11-15-19-23-27-31-35-39

1-5-9-13-17-21-25-29-33-37

2-6-10-14-18-22-26-30-24-38

0-2-8-12-16-20-24-28-32-36

2-6-10-14-18-22-26-30-24-38

3-7-11-15-19-23-27-31-35-39

1-3-9-13-17-21-25-29-33-37

3-7-11-15-19-23-27-31-35-39

Week2 Peer Review
Go to each team mates weekly summary wiki page. Read their activities and narrative. Then go the associated discussion page. Say something positive on this page. Try some constructive criticism. Add your name and a signature ~ by entering four tildes in a row to create a time and date stamp. Create a new category if another team mate has already commented here.

Assign Task3
Work on the design of the mechanical portion of the lockpick.

Compare actual work done to Task3
Spent time putting together the motor components, did not do anything with mounting a solenoid.

Week3 Narrative
Tested a few motors, selected the one that was most like the youtube video's motor. Drilled a hole in the connector piece to fit on the motor's shaft, and put together the entire system:

12 volt power source

2 arduinos, stacked

Stepper motor

Connector piece

Lock

Lock was successfully spun by the stepper motor, at various speeds and step frequency (time between steps) which was controlled by the arduinos, which was programmed to use the default stepper example. Also tested out a solenoid briefly, though it did not seem to have the pulling power to open the lock latch (when unlocked).

 File:MechanicalComboLockPick.jpg|The system

Week3 Peer Review
Go to each team mates weekly summary wiki page. Read their activities and narrative. Then go the associated discussion page. Say something positive on this page. Try some constructive criticism. Add your name and a signature ~ by entering four tildes in a row to create a time and date stamp. Create a new category if another team mate has already commented here.

Assign Task4
Start work on the solenoid, maybe work on a lock clamp (to keep it in place) if time permits.

Compare actual work done to Task4
Did not work on solenoid, instead worked on mounting system and last minute testing.

Week4 Narrative
Spent most of my time working on a mounting system for the motor/ locking mechanism. A picture of this (and the rest of the system) can be found above. The stepper motor is mounted on a piece of wood by way of a pull tie. This wood has a small, 3mm notch so that the pull tie would not slip. Some testing of this system was done, and it worked just as well as previous tests, spinning the dial left and right at various speeds and frequency of steps.

Week4 Peer Review
Go to each team mates weekly summary wiki page. Read their activities and narrative. Then go the associated discussion page. Say something positive on this page. Try some constructive criticism. Add your name and a signature ~ by entering four tildes in a row to create a time and date stamp. Create a new category if another team mate has already commented here.

Complete Project Page
Follow the "project done" format.

title: User:Zblaha2768/enes100/ComboLockPick


text:
File:Waterfall11.jpg

Licensing
for school project

title: File:Waterfall11.jpg


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File:Waterfall8.jpg

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title: File:Waterfall8.jpg


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File:Waterfall7.jpg

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title: File:Waterfall7.jpg


text:
File:Waterfall5.jpg

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title: File:Waterfall5.jpg


text:
User:Caypartisbot

__NOINDEX__

title: User:Caypartisbot


text:
User talk:Yash069

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User talk:Gaya3

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User talk:Aligulfam

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User talk:Linfam09

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title: User talk:Linfam09


text:
User talk:Qchi8375/enes100/engine

Week O
10/10 .. 1sfoerster 23:41, 15 November 2011 (UTC)

A fresh start is a good start, as you so put it. I looked at your last project with the Sterling Engine and seems you have a good base of knowledge that I may need to lean on. If I am correct the main problem for your last project was friction, so I am anxious to see what you came up with. Jeffrey Lloyd 13, November 2011 13:33 (UTC)

Week 1
Good job hunting down all of your materials. Let me know if you come up short. Jeffrey Lloyd 20, November 2011 19:35 (UTC)

Good job starting fresh. You wont make the same mistakes. Mbaig7172

10/10/30 ... good job developing the theory of operation of a stirling engine 1sfoerster 19:56, 21 November 2011 (UTC)

Week 2
Great start, you should post some pics. I am sure it looks great. Jeffrey Lloyd 27, November 2011 11:10 (UTC)

10/5/40 .. need some pictures .. need to describe what you are going to do next week 1sfoerster 14:12, 28 November 2011 (UTC)

Week 3
Thanks for explaining to me the tin can has to be 1/2 the size of the displacer.

Mbaig7172 02:47, 5 December 2011 (UTC)9:50 PM Decmeber 4 2011

Great progress. Jeffrey Lloyd 4, December 2011 11:10 (UTC)

10/10/30 ... good description ... needs to be enhanced with photos/videos of your own 1sfoerster 19:34, 5 December 2011 (UTC)

Week 4
10/10/10 ... good videos 1sfoerster 17:15, 14 December 2011 (UTC)

title: User talk:Qchi8375/enes100/engine


text:
Talk:Engineering Projects/Engines/Howard Community College/Fall2011/550/qjb-eng

I think I going to attempt this style which a typical vertical model but utilizing a | paint can. I went out and purchased all of the materials which ran me less than $30.00. Jeffrey Lloyd 13, November 2011 13:33 (UTC)

I plan on using this material in-order to reduce friction wherever possible, it is called | UHMW. It is relatively expensive, $30.00 for a 1/2" sheet, but it would be nice to have for other projects.| Woodcraft,of Towson, sells it and I may run up there and pick up a sheet I will let you know. Jeffrey Lloyd 13, November 2011 13:48 (UTC)

I got some UHMW if any of you guys need some. It came as a lot package with a variety of sizes. Let me know. Jeffrey Lloyd 20, November 2011 19:11 (UTC)

http://www.instructables.com/id/An-easy-to-build-Stirling-Engine-fan/step4/A-jig-to-glue-the-bushing-in-place/

I picked up some nylon sleeves from Home Depot worked well as a bushings. The inside diameter is .115", I have extra let me know if anyone needs some and I will bring them to class. Jeffrey Lloyd 27, November 2011 11:15 (UTC)

100/100


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User talk:Johnanth

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text:
File:Soldering Iron 1.jpg

Licensing
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title: File:Soldering Iron 1.jpg


text:
File:Potentiometer With New Wires 1.jpg

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title: File:Potentiometer With New Wires 1.jpg


text:
File:Potentiometer to Arduino 1.jpg

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title: File:Potentiometer to Arduino 1.jpg


text:
Engineering Projects/Rubberband gun/Howard Community College/fall2011/550 JK

Problem Statement
How can a rubberband gun be made that has a single trigger that allows shooting a rubberband and automatically loading the next one?

Team Members

 * OJ
 * GK
 * FH

Summary
Put an overall, one paragraph summary here with links to the team weekly reports.

Weekly Reports
 * Below is the link to our weekly reports:

Story
After completing the first chapter of the project were a sling rubberband and a pistol were created, the second chapter was heavily concentrated on the gattling gun. Legos were once again used this time since it enabled us to constantly keep editing our project and implement improvements on it. The specific lego motors reauired special batteries that the group ordered online. A gear system was implemented to facilitate and run the trigger system as smooth as possible. The gun was supported by two blocks on either side of the gun. Initially, we were planning on taking out the block on the end of the gun and replace it with a hinge that allows the weapon to move up and down however we learned that this system gave the gun stability and control so we kept it as it was. The batteries did not arrive by week 4 so once they are implemented into the motor, the gattling gun should work smoothly.

Decision List
Week 0 Week 1 Week 2 Week 3 Week 4 -The engines can be put into either on the barrels or the string winders depending on the members decision.
 * Researched the gatling gun for the rubber band and decided to build one.
 * Made the designs on the 3D apps
 * Gathered supplies that are going to be used for this project
 * Group was split into half to accomplish different tasks: testing the rifle and beginning construction on gatling gun.
 * Debated on removing the second base, decided on keeping it until a handle could be made.
 * Decided to use a string as a trigger for pulling the rubber bands when winded up.
 * Decided to double the width of the gun so that two barrels could fit.
 * Both were made successfully and fully functional.
 * Improved the overall structure of the gun and replaced the main base with a better one.
 * Decided to use a manual system to rotate the barrels since the battery would take a while to come.
 * Decided to use a system of gears to rotate both barrels with a single handle.
 * Changed gear system to make the barrels rotate inwards.
 * Decided to continue with the manual rotating system.
 * Synchronized the string winder/trigger so that the rubber bands are released from both barrels at the same time.
 * Made sure each important pieces can be altered for later improvements:

-The barrels can be either synchronized by using the gears to make them rotate together or putting two engines on each barrels and activate them at the same time.

Material List

 * Legos
 * Rubberbands

Software List

 * Chrome Browser (to research models)
 * Youtube
 * 3D Tin

Time
Week 1, 4 hours of work was done by each student testing the accuracy of the rifle gun, doing research, and constructing the gattling gun.

Week 2, 2 hours (limited because of break) of work was done by each student constructing the double barrels and making them both function properly.

Week 3, 5 hours of work was done by each student presenting the updated version of the gun, adding in a system of gears, and ordering batteries for the motor.

Week 4, 3 hours of work was done by each student cleaning up the product, completing the manual trigger system, and finalizing the finished product.

 * TOTAL over 14 hours of work from each members are done for this project

Next Steps

 * Allow the others to easily replicate this model if they wish to use the similar model designs.
 * Apply and test the engines after they come in: Perfectly finish the project


text:
User:Kjaved373/enes100/rubberband gun reloaded

Link to project 550_JK team page.

Give instructor top 3 project choice list

 * 1. Rubberband gun

 * 2. Rube Goldberg

 * 3. StrandBeest

Write problem statement

 * How can a gun be built with a trigger system that can fire sequentially (instead of reloading after each fire)?
 * How can each trigger system be integrated into the above mentioned gun?

Assign Task1

 * Research ways to auto load a rubber band after firing one.
 * Create new designs of a trigger system.
 * Think of ways to improve on the existing trigger systems.

Compare actual work done to Task1

 * Helped test the accuracy of the rifle
 * Added a second bridge to gattling gun
 * Created one side of the base for the gattling gun

Week1 Narrative
[| Video of Lego Gattling Gun Firing Rubbberbands]
 * Our team had decided to make a gattling gun similar to a video we found online
 * The accuracy of the rifle was tested by adding target lock on the gun to look through, the aim was off by less than a few inches each time when shooting from a distance of 15 feet
 * Within the first few days, a working prototype was built, capable of firing 8 rubber bands
 * A second base was made to allow double the firing of rubber bands, but only half a bridge has been made

Assign Task2

 * Get the second bridge of the gattling gun working to fire double the rubberbands
 * Improve on the structure to make it stronger
 * Improve on the accuracy of the rifle

Compare actual work done to Task3

 * Worked on improving both bases
 * Completed constructing both barrels
 * Added a handle to manually rotate the barrels
 * Ordered lego battery

Week3 Narrative
The base on the front end of the gun was removed and replaced by a bigger and sturdier base. The back base was made to mirror the front base in size and sturdiness, but a rotating handle was added temporarily to rotate the barrels. We tried different methods to get the gun to fire with the string trigger, but we were unsuccessful. The battery should arrive soon which would allow us to use the motor. We plan on attaching both strings to the motor and placing the motor in the center so when it spins, the string is winded up thus causing the barrels to spin and fire. We are also looking for an alternate way of firing the gun by getting rid of the string system and allowing a more manual way of firing using the handle.

Assign Task4

 * If battery arrives, work on implementing the motor
 * Improve on the string trigger, or change trigger completely
 * Finalize the Gatling rubber band gun

Compare actual work done to Task4
Rationalize differences

Week4 Narrative
Upload photos to wikimedia. Upload video to youtube. Convert all spreadsheets, documents, and presentations to wiki format and create wiki subpage of your page for each of them. Link to them here in a narrative that tells a story. High light the problems (engineering problems) you had and how you solved them.

Week4 Peer Review
Go to each team mates weekly summary wiki page. Read their activities and narrative. Then go the associated discussion page. Say something positive on this page. Try some constructive criticism. Add your name and a signature ~ by entering four tildes in a row to create a time and date stamp. Create a new category if another team mate has already commented here.

Complete Project Page
Follow the "project done" format.

Start Next Project Week0 activities
During this week you will perform the week0 activities of the next project.


text:
User:Anton1102/enes100/rubberband gun reloaded

Link to project 550_JK team page.

Give instructor top 3 project choice list

 * Rubberband Gun
 * Robot arms
 * Strandbeest

Write problem statement
From our previous works, how are we going to build more advanced guns that can fire sequentially?

Assign Task1

 * Get ready to order/bring in necessary pieces for further contructions
 * Research further on the sequential firing rubberband guns
 * Research if there are another pieces we can use other than Legos and rubberbands. Example: metal spring, wires, small wood or plastic pieces.
 * Find a various techniques that the other use on their Gatling guns and sequential firing guns [Gatling gun]

Compare actual work done to Task1

 * I brought my pieces of the LEGOs for the construction of the gatling gun and sequential firing guns.
 * Did a long hour research on the guns that were previously attempted by HCC students and the Youtube videos of rubberband guns.
 * Successfully came up with the LEGO design and built the working prototype of our gatling gun in 1 week period
 * Tried to further expand on the prototype rather than calling it an end for the week 1.
 * Improved on the previous gun while also studying its trigger system for future products.

Week1 Narrative
[My first gatling gun:testing]
 * With the new gatling gun prototype built, I took many pictures and some videos.

Assign Task2

 * Once again bring my own pieces for further constructions
 * Present to the class our successful gatling gun prototype
 * improve the prototype
 * Build upon the prototype and plan to create new gatling gun that has different trigger system

Compare actual work done to Task2

 * Brought my own pieces for further construction
 * Presented to the class
 * The gatling gun is now have dual barrel
 * Tested both barrel and found perfectly functioning

Week2 Narrative

 * This week with only 1 class time to work on the project, I managed to build fully functioning double barrel gatling gun. All needs now is main base to hold the body of the guns and the engines.
 * Here is the test on the double barrel gatling gun [Testing on Gatling gun]

Assign Task3

 * Once the sight alignment testing is done, it will be applied on the gatling gun as well
 * Construct the main base of the gatling gun
 * Apply the engines on the gatling gun

Compare actual work done to Task3

 * Improved the gatling gun so that the double barrels move together but opposite directions
 * Presented to the class about our project's progress
 * Selected and ordered the generators for the motors for the gatling gun
 * Debated about the trigger system: String or gears?

Week3 Narrative

 * The great advantage of my design is that the whole gatling gun can be easily modified. The pieces that I placed can be easily removed and can put better or improved parts into the structure. And the new pieces can be fitted into the empty spots without huge change in structures.
 * The multiple videos and pictures are taken to document the improvements and changes on our projects:
 * [The very frist prototype of the complex gear]
 * [The expanded complex gear for gatling gun]
 * [The testing of the gatling gun with the complex gears: Synchronized but only rotate in one direction]
 * [Fixed rotation of the gatling gun: Rotates in opposite direction (inward)]

Assign Task4

 * Push to finalize the project
 * Decide what the trigger will be for the gatling gun
 * Test the trigger system and the motors+engines
 * Check for repeatability of this project

Compare actual work done to Task4

 * Created the string winders. They wind up the string that are winded on each slots of the barrels and as they wind up the string, the rubberband is released/fired.
 * Tested the string winders for reliability.
 * Synchronized the string winders so that they allow the rubberbands on each slots to be released at the same time

Week4 Narrative

 * I was able to create the trigger system for the rubberband gatling gun. The string winders proves effective but still need to be improved for durability (Able to withstand the tension of the rubberbands and pull out the string to fire them) and reliability (Do they effectivily and successfully release the rubberbands)
 * [Fire testing] for the gatling gun with the string winder/trigger
 * There were some [issues] and [problems] during tests

10/10/80 ... 1sfoerster 17:31, 14 December 2011 (UTC)

Start Next Project Week0 activities

 * Take the final before due date/time