Hi – my daughter made her robot halloween costume using many Adafruit parts. She did all the electronics work herself. She cut apart one of the RGB LED strips into three pieces, soldered on connecting jumper wires, soldered in an on/off switch, soldered everything to an Adafruit protoshield kit, plunked it onto one of your Arduino’s and figured out the sketch. She learned how to do most of this from your website. She is ten years old. Thank you for all of the fantastic tutorials.
These LED strips are fun and glowy. There are 32 RGB LEDs per meter, and you can control each LED individually! Yes, that’s right, this is the digitally-addressable type of LED strip. You can set the color of each LED’s red, green and blue component with 7-bit PWM precision (so 21-bit color per pixel). The LEDs are controlled by shift-registers that are chained up down the strip so you can shorten or lengthen the strip. Only 2 digital output pins are required to send data down. The PWM is built into each chip so once you set the color you can stop talking to the strip and it will continue to PWM all the LEDs for you.
HAPPY HALLOWEEN! Each day this month (Monday-Friday) we’re going to have a special “Electronic Halloween” post here on Adafruit. It will be a hack, mod, project or something we’ve found that combines all the best things about electronics and Halloween.