Download the Adafruit LED Backpack library from github - This code provides support for the mini 8x8, 1.2" 8x8, 7-segment, bargraph, alphanumeric and bicolor LED matrix backpacks.

To download click the ZIP download button, 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 Adafruit GFX library - its not actually used for the 7-segment, its only for the matrix backpacks but its still required. Install just like the library above. Restart the IDE

HT16K33 8x16 LED Backpack Breakout

Schematic & fabrication print

8x8 0.8" LED Backpack

8x8 1.2" LED Backpack

8x8 1.2" Bi-Color LED Backpack

16x8 1.2" LED Backpacks

Quad 0.56" 7-Segment

Quad 0.54" 14-segment Alphanumeric

Quad 1.2" 7-Segment

Bicolor 24-Bargraph

This guide was first published on Jul 29, 2012. It was last updated on Jul 29, 2012. This page (Downloads) was last updated on Oct 23, 2019.