Datasheet
Place the soldered backpack on top of the header.
Solder 'em!
That's it! now you're ready to run the firmware!
Mini 8x8 Matrix Software
We wrote a basic library to help you work with the mini 8x8 matrix backpack. The library is written for the Arduino and
will work with any Arduino as it just uses the I2C pins. The code is very portable and can be easily adapted to any I2C-
capable micro.
Wiring to the matrix is really easy
Connect CLK to the I2C clock - on Arduino UNO thats Analog #5, on the Leonardo its Digital #3, on the Mega its
digital #21
Connect DAT to the I2C data - on Arduino UNO thats Analog #4, on the Leonardo its Digital #2, on the Mega its
digital #20
Connect GND to common ground
Connect VCC+ to power - 5V is best but 3V also seems to work for 3V microcontrollers.
Next, download the Adafruit LED Backpack library from github (https://adafru.it/aLI) . 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
© Adafruit Industries https://learn.adafruit.com/adafruit-led-backpack Page 16 of 74










