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For background on CheerLights see: http://www.cheerlights.com/ There are some notes on my implementation here: http://wiki.milwaukeemakerspace.org/projects/cheerlight The CheerLights.pde file is an Arduino sketch you'll want to run on an Arduino-compatible microcontroller. The Arduino will need to be connected to a computer with Internet access via USB. The cheerlights.pl Perl script will loop forever (well, until you kill it, or it dies) and request the file at http://api.thingspeak.com/channels/1417/field/1/last.txt which will tell it the current color. The Perl script then sends a numeric code to the Arduino and the Arduino makes the ShiftBrite display that color. Simple! On the Arduino side you will need the HughesyShiftBrite library: http://code.google.com/p/shiftbritehughesyarduino/ On the Perl side you will need the Device::SerialPort and LWP::Simple modules. To connect the ShiftBrite to the Arduino you just run its GND to the GND on the Arduino, the V+ to the 5V on the Arduino, and the run DI, LI, CI, EI to digital pins 10, 11, 12, 13 respectively, on the Arduino. Just 6 wires in total connected to the left side of the ShiftBrite. (See the file Connection.jpg) This code is released under the GPL. Pete Prodoehl firstname.lastname@example.org http://rasterweb.net/raster/ Twitter: @raster