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Bako.ca | Biking in place through Google StreetView
More usefully described, this project uses a head-mounted-display that has sensors for detection of orientation so that the user can be placed into a Google StreetView scene and can look around freely. For movement through the map, an exercise bike used to estimate forward movement using a simple reed switch that counts the number of revolutions of the wheel.
Pragmatically explained, it means that I don't have to sit in the darkness or stare at my garage door while I'm huffing away. Hopefully once this is done, I'll be able to spend a few nights a week pedalling away downstairs and work my way across the US or Australia over the course of the year. The irony of this project is, well, while it's supposed to help me entain myself while using the exercise bike, the project itself has been keeping me from exercising. Oh well.
It is also a project that I would be thrilled if someone took the idea and made a decent implementation out of it. Make it user focused and reliable and I'll be the first to use it.
DIY Apple Remote Shield for the Arduino
Have you ever wanted to make an apple remote? Or maybe want to have one of your arduino creations be able to control iTunes on your Mac, your iPod, Or your Apple TV? Now you can!
Awhile back I was working on a project that that I wanted to be able to start music the on my mac through the IR receiver. After a while of looking around I found this library which allows you to use your arduino as an Apple Remote. I integrated it in to my project and it worked great! So the other day I decided to make an Apple Remote shield for my arduino.
How to build an Air Guitar with Arduino, aka the AIRduino Guitar
The idea here is to build a wearable virtual guitar that is to be controlled with two hands much like playing Air Guitar. It has been created and prototyped during a two weeks project at ChalmersUniversity (Sweden) for a Physical Computing class.
The aim is to get the feeling of playing a real guitar. The AIRduino Guitar is made of one glove and one stick. The glove is used to set the tone and the stick to trigger the sound.
To perform such trick, we used an accelerometer and an ultra-sonic sensor (see Step 1 for concept description).
Take a look at the video demo to get a more precise idea of how it works, and get to work to build your own!
Secret Knock Detecting Door Lock - Made by Steve Hoefer
ow many times have you seen a secret hideout with a secret knock? It's a staple of cheesy dramas, Saturday afternoon movies, and tree houses throughout the world.
While working on another project I ran across the Arduino knock sensor tutorial. Sensing a single knock is a great little project for learning about microcontrollers, but what about sensing specific knocks? Seeeeecret knocks? And if we could detect a secret knock, shouldn't it unlock a door? If you can't tell by looking this was cobbled together from spare stuff around the lab, it's not much more than a piezo speaker, a tiny gear reduction motor, and an Arduino. And PVC pipe. How about a video to explain:
Wii Nunchuck Adapter
This tutorial is for all those people who have an arduino and want to use there Wii nunchuck as an input device, but dont realy feel like cutting open the cord and ruining the nunchuck FOREVER!!!!!!!!
well youve come to the right place!
Charlieplexed row of LED lights, for the Arduino
This is my instructable on charlieplexing a LED row/string with the arduino. I noticed that there weren't many instructables on charlieplexing using an arduino, so i made this. I tried to keep the project simple, but that didn't work very well. The soldering is complex, I wouldn't recommend this as a first time soldering project.
$10 Arduino Beatbox (remake of the $5 Picaxe Beatbox)
"This is a simple sequencer machine which uses Capacitative Sensing Code for input to the Arduino. It is is a combination drumpad and sequencer. It has just two modes, record, and playback, and needs very few components; an Arduino (of course), and just 3 resistors and a piezo speaker. If you're feeling decadent, you can add an LED (with a resistor) for more "ooomph"."
DinoFab ~~ Stepper Motor Powered Bike Light - Build your own power source with a stepper motor and your bicycle!
First there's the stepper motor. Most older printers will have one or two stepper motors inside them. How do you know if it's a stepper motor? It will have 4, 5 or 6 wires coming out of it. They usually have some kind of gear or drive wheel on one end. It doesn't need to be big to produce the amount of electricity we need. Smaller is actually better in this case.
READ>>More about generating electricity with stepper motors<<READ
Rubber drive wheel. You will need some kind of rubber wheel to mount on the stepper motor, unless it has one. I found that the rubber grommet selection at the hardware store proved to be a good place to find a suitable wheel. You'll want one larger than the diameter of the motor. This will allow the motor to be mounted near the wheel with the rubber drive wheel touching the bicycle wheel's rim. See photos 1, 2 & 3 below. The hole in the center of this wheel should be small enough so as to be pressed on to the existing gear that's on the stepper motor and epoxied in place.
Arduino noise box synth | mechomaniac
As my first Arduino project, it was a bit of an experiment with the Arduino programming environment, and I also wanted to investigate direct Audio synthesis using PWM on the Arduino. The basic sequencer concept came from the Arduino Punk Console, while synthesis was adapted from the Atmega SID Project.
The basic features are:
* 16-step programable sequencer with adjustable frequency and duration for each step
* synthesizer with 4 output waveforms (sine, square, triangle and sawtooth)
* noise generation (sirens, laser beam, random noise)
* special random sound modes
The user interface is kept very simple, with just four knobs, three puss buttons, 8 LEDs and a power switch. The speaker is connected straight to a pin on the Arduino via the volume knob - everything is done in the Arduino using PWM to generate analog waveforms. The LEDs indicate the current step in sequencing mode, and provide light patterns in noise modes.
Stepper motors
Stepper motors are available new, from surplus houses, or can be pulled from old electronic equipment such as floppy drives. Jameco has a nice selection, also Ax-Man typically has a variety. Parallax sells a stepper (PN # 27964), a little pricey, but comes with excellent application notes.
Look for "unipolar" or "4-coil" or "4-phase" motor (they all mean the same thing) with 5 or 6 or 8 wires. Avoid "bipolar" motors because they require an entirely different control scheme. However, if you find a good 4-wire bipolar stepper motor from a printer, here is a good reference source: Interfacing a bipolar stepper to the Stamp
Key specs are operating voltage (12V is convenient for robotics projects), and either coil current or coil resistance (given one spec you can get the other from V=IR). Look for motors with a coil current of 250 mA or less (coil resistance of 48 ohms or more for a 12V motor). Higher currents do give higher torque, but will also drain your battery faster. Another key spec is the holding torque which is how much torque the motor can resist when energized.
If you are pulling a motor from an old floppy drive, look for a flat motor with five or six leads.
Bunedoggle - Take it to 11
Here's my robot based on the arduino diecimila. It's built from two servos modified for continuous rotation, one standard servo and a sharp ir range finder. The body of the robot is a rechargable battery from black and decker called "pocket power". The wheels and "caster" are parts from capcella. The whole thing is assembled with hot glue.
basic function
The robot sweeps the ir range finder 130 degrees and records the closest object. Objects closer than 10 inches will cause the robot to take action. If this object is more than 45 degrees to the right or left it makes a small correction away from the object. If the object is within the center 90 degrees, it stops, looks left and right, finds the clearest direction and turns about 90 degrees to that direction.
C i b o M a h t o . c o m » Controlling a clock with an Arduino
Update: The Arduino system is fine; the only thing you have to take into consideration is the 9.54 hour rollover event, which Rob Faludi has provided an excellent solution for here. I made up a nice little over-analysis of the issue, available here.
I have been wanting to make a variable-speed clock for a while, so this weekend I picked up a cheapish clock unit (thrift stores are a great source!), and played around with using the Arduino to control it. In summary, I was able to get everything going, but there are some issues with the Arduino software that are going to prevent making it a really accurate clock. Explanation, source code after the break.
cwwang.com » Blog Archive » GSR Reader
Galvanic skin response readings are simply the measurement of electrical resistance through the body. Two leads are attached to two fingertips. One lead sends current while the other measures the difference. This setup measures GSR every 50 milliseconds. Each reading is graphed, while peaks are highlighted and an average is calculated to smooth out the values. A baseline reading is taken for 10 seconds if the readings go flat (fingers removed from leads).
Serial MIDI
The Serial - MIDI converter (SM = Serial MIDI Converter) is a software solution to get your computer’s serial port (or virtual serial port over USB) talking with your MIDI software and hardware.
Normally, to use an Arduino or other micro-controller with your MIDI software you had to build a MIDI-in and MIDI-out circuit with a few parts and an opto-coupler. Easy enough, but then you would typically need a MIDI to USB adaptor to connect it to your computer.
With the SM and a board like you the Arduino with USB, you don’t need any other hardware to get your Arduino to play music with software such as Apple’s GarageBand or Ableton’s Live !
Theremin Style Instrument
This battery powered electronic musical instrument is a descendant of the theremin and can be played without contact from the musician. This small instrument contains two infared (IR) sensors that measure proximity. One sensor controls the note, while the other controls the octave that is played through the speaker in the front. The tone is reflected by one of seven colors that illuminates the center area and highlights a small indicator located on the top panel.
Could be done with Arduino
todbot blog » Blog Archive » Tiny Servos as Continuous Rotation Gearmotors
Tiny Servos as Continuous Rotation Gearmotors
I’ve been exploring various types of gearmotors. DC motors by themselves spin too fast and have low torque. Gearmotors are motors with a gearbox that slows down the high speed of the motor and produces higher torque. Most gearmotors are pretty expensive though. I want a really cheap, almost throw-away, source of gearmotors. It turns out cheap servos can be made into continuous rotation gearmotors.
Arduino Bicycle Gear Indicator - Windows Live
I did this as a practice project for building a gear indicator for my motorcycle. The idea is that by monitoring the revolution speed of the rear wheel and of the driving pedal I can calculate which of the 6 gears the bike is in. It’s not terribly useful on a bicycle but I think it will be handy on the motorcycle.
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