This is an Arduino library for our 16x32 and 32x32 RGB LED matrix panels Pick one up at http://www.adafruit.com/products/420 & http://www.adafruit.com/products/607 ! Written by Limor Fried/Ladyada & Phil Burgess/PaintYourDragon for Adafruit Industries. BSD license, all text above must be included in any redistribution To download. click the ZIP (download) button, rename the uncompressed folder RGBmatrixPanel. Check that the RGBmatrixPanel folder contains RGBmatrixPanel.cpp and RGBmatrixPanel.h Place the RGBmatrixPanel library folder your arduinosketchfolder/libraries/ folder. You may need to create the libraries subfolder if its your first library. Restart the IDE. We also have a great tutorial on Arduino library installation at: http://learn.adafruit.com/adafruit-all-about-arduino-libraries-install-use