This product is retired, please consider our PIXEL Guts Kit as your alternative choice. Rainbowduino Extension Shield is a breakout board of Rainbowduino’s 192 separate LED driving channels. The channels are divided into three 8*8 arrays: red, green and blue for easier controlling, it is designed to ease customized LED projects based on Rainbowduino. If you are looking for LEDs for the extension board, please check out here:https://www.seeedstudio.com/s/optoelectronics-discrete-led.html Features 60.33mm×180.61mm(3 multiple of Rainbowduino’s size) Can drive 192 separate LED No extra junctions neededDocumentsDatasheetSource fileDemo code