Datasheet

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Guide Contents
Guide Contents
Overview
1.2" 8x8 Matrix
(https://adafru.it/aPT)Mini 8x8 Matrix Software
0.8" 8x8 Matrix
Mini 8x8 Matrix Software
0.54" Alphanumeric
Attaching the Backpack
Attaching Header
Prepare the header strip:
Add the Backpack:
Downloading the Arduino Library
Wiring!
Load Demo
Library Reference
ASCII data
Writing Data
0.56" 7-Segment Backpack
Seven-Segment Backpack Firmware
1.2" 7-segment Backpack
Arduino Wiring - R3 and later
Arduino Due and Other 3.3v Processors
Arduino "Classic" Wiring
Seven-Segment Backpack Firmware
Bi-Color 8x8 Matrix
Bi-Color 8x8 LED Backpack Firmware
Schematic
Bi-Color 24 Bargraph
Attaching the bar-graph modules
Soldering on breadboard pins
Bi-Color Bargraph LED Backpack Wiring & Firmware
Connecting Multiple Backpacks
Wire it Up
Configure the Address
Changing I2C Address
Changing Addresses
Changing the address in your code
F.A.Q.
I want to use these modules with other non-Arduino, how can I port the code?
I'd like to use these backpacks with Python / Linux (e.g. a Raspberry Pi)
I am having strange problems when combining Adafruit Motor Shield/Servo Shield (PCA9685 based) with the
Adafruit LED Matrix/7Seg Backpacks
What is the current draw of the backpacks?
© Adafruit Industries https://learn.adafruit.com/adafruit-led-backpack Page 2 of 74