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First arduino board and its gubbins...
September 2011
For more on this, arduino stuff and other daft things see the "Making weird stuff" blog
ebay deal. $10 shipping included (from China, check box for exact location). Seems to work fine. It actually says "Arduino Compatible" on the back.
iPhone controlled Arduino Lamp. I store the last color to EEPROM so it restarts with the last color/rgb values.
Simple DSLR flash trigger. Uses optoisolator to close circuit when sound exceeds a threshold set by potentiometer on breadboard. Uses electret microphone from Adafruit.
Acrylic from Pokono.
Just a quick proof-of-concept demo. Arduino listens for voltage drop from doorbell circuit, then moves servo back and forth to shake a bell attached to a lego arm driven by the servo.
The bell is just from an ornament and isn't really loud, so a better bell is needed.
Code used here: github.com/lilspikey/arduino_sketches/blob/master/doorbel...
Simple DSLR flash trigger. Uses optoisolator to close circuit when sound exceeds a threshold set by potentiometer on breadboard. Also has a optoisolator for the camera. Program puts camera in bulb then waits for sound to trigger flash. Uses Adafruit shield for arduino. The small audio jack is for a Canon camera. Hotshoe adapter is hacked to act as an interface to a Canon speedlight
Arduino-based temperature controller with variable rate temperature change. It will hold an initial temperature for a specified amount of time, and will then ramp that temperature up or down, and hold at a final temperature. For example: heat a water bath for chocolate to 130 and keep it there for 10 minutes (assuming it will take that long to melt all of the chocolate). Then reduce temperature by 1 degree every 10 seconds for 40 iterations, and keep at a tempered 90 degrees until you power everything off. Many cheese making recipes specify heating from X to Y at no more than 1 degree every minute, so this is perfect for that. No more hovering over a water bath for hours!
This is a pic of my arduino board communicating with the DS1822 temperature sensor from Dallas Semiconductor. In the background, hyperterminal is printing out the values returned by the arduino over serial.
CO2 sensor used with Arduino
if you go to rswww.com and search for part number 538-9897 you will find the Figaro CDM4161 - that is the device shown in the image.
We use the mood information from the music to light up the background of the large monitors. The large monitors mirror what is going on the car stereo head unit. All the parts are from Adafruit. The car stereo uses usb/serial to communicate with the arduino. See flic.kr/p/pTpt9k for details
Arduino based analog clock with salvaged linear gauges from old Horiba gas analyser
See this project on:
See other projects on:
This is the CTCSS generator opened up.
The Arduino is fastened to the lid, thumbwheel switches, 5 volt regulator, and 4018 sine converter are fastened to the bottom. 10k trimpot to adjust the tone level.
A new version
A new version of the venerable Arduino Breakout Shield.
More info at make.rrrf.org/ab-1.4
This is a full shot of the robot while lying down.
This project uses an Arduino to drive a miniature "segway" balancing robot.
A pair of Lego Mindstorm NXT motors are used to drive the robot wheels. An Arduino is used to control the motors. An ADXL335 3-axis accelerometer is used to determine robot orientation. An L293D H-Bridge is used to allow the Arduino to interface with the Lego NXT motors using pulse-width modulation signals. A proportional-integral-derivative (PID) algorithm was used to determine the logic for wheel movement. Programmed in C++.
Unfortunately, the robot required "human assistance" to stand up on its own for any length of time. I wish I had a bit more time on this project to continue tweaking the PID algorithm to improve this.
A new version
A new version of the venerable Arduino Breakout Shield.
More info at make.rrrf.org/ab-1.4
No server required.... Arduino + LadyAda ethernet shield with Wiznet module, plus external power supply. The blue ethernet cable's plugged directly into my broadband router.
The lego stand for the current cost allows the black cable in the bottom.
This is now logging my electricity consumption to pachube.com!
See blog entry.
Wanting to participate in the Cheerlights project (www.cheerlights.com) but not having the dough for a full string of Christmas tree lights ($70), I whipped up a small tree out of a sheet of expanded PVC board, painted it appropriately, and mounted ten RGB LEDs on it. The Arduino microcontroller inside the box uses it's Ethernet Shield to communicate directly with the Cheerlights ThingSpeak Channel over the internet. The Arduino changes the color of the lights (along with all the other Cheerlights projects in the world) every time a new color is Tweeted by anyone with a public Twitter account. The box does not attach to a computer, it plugs right into our home network. More comments and a link to my Arduino code can be found at makeprojects.com/Project/Cheerlights-Desktop-Christmas-Tr...