LED backpack displays are a great way to add a simple, bright LED display to your project. These displays get their name because of the controller chip attached to the back of them like a 'backpack'. This HT16K33 controller can drive up to 128 multiplexed LEDs in matrix, bar graph, 7-segment numeric, and even 14-segment alpha-numeric configurations. It handles the LEDs with a constant-current driver so the light is bright and consistent even if the power supply varies.
While we already have a great tutorial and Arduino library for our handy and easy to use LED backpacks, if you're wondering how you can make use of backpack-enabled LED displays on the Pi, this guide will help you get started!
- A Raspberry Pi
- A Pi Cobbler Plus
- One of our many 8x8 or 4-Digit 7-Segment backpack-enabled displays
If you're looking for help on how to assemble one of our backpack-enabled LED displays, have a look at our earlier guide, Adafruit LED Backpacks. It contains a lot of complimentary information on these displays, including step by step soldering and assembly instructions.