* Download the [https://github.com/adafruit/Adafruit-LED-Backpack-Library Adafruit LED Backpack library from github] - This code provides support for the mini 8x8, 7-segment and bicolor LED matrix backpacks.
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To download click the DOWNLOADS button in the top right corner, rename the uncompressed folder '''Adafruit_LEDBackpack'''. Check that the '''Adafruit_LEDBackpack''' folder contains '''Adafruit_LEDBackpack.cpp''' and '''Adafruit_LEDBackpack.h''' Place the Adafruit_LEDBackpack library folder your arduinosketchfolder/libraries/ folder. You may need to create the libraries subfolder if its your first library. You'll also need to download the [https://github.com/adafruit/Adafruit-GFX-Library Adafruit GFX library] - its not actually used for the 7-segment, its only for the matrix backpacks but its still required. Restart the IDE.
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* You'll also need to download the [https://github.com/adafruit/Adafruit-GFX-Library Adafruit GFX library] that provides the graphics drawing routines, and must be installed even if you're not using the GFX routines!
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* [https://github.com/adafruit/Adafruit-LED-Backpacks Schematic and PCB files are available from Github] - in Eagle 6 format.
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* The backpacks all use the [http://www.adafruit.com/datasheets/ht16K33v110.pdf HT16K33 chip] solely for LED driving - the mini 8x8's use the 24 pin version and the others use the 28 pin vesion