Adafruit 16x8 LED Matrix Driver Backpack - HT16K33 Breakout
We have ✅ 4 available of the AF-1427 in our Sydney warehouse.
The Adafruit 16×8 LED Matrix Driver Backpack is a breadboard-friendly breakout for the HT16K33 multiplexed LED driver. Unlike the pre-configured LED backpacks, this version breaks out all 16 anode and 8 cathode pins, letting you wire up any LED matrix configuration you need — up to 128 individual LEDs.
Communication is over I2C using just 2 pins, with 8 selectable addresses allowing up to 8 boards on one bus for a total of 1,024 LEDs. The chip also supports reading a 3×13 keypad matrix for input applications.
Key Features
- 16×8 LED Multiplexing – Drive up to 128 individual LEDs
- HT16K33 Driver – I2C control with 8 selectable addresses
- All Pins Broken Out – 16 anodes and 8 cathodes for custom wiring
- Stackable – Up to 8 boards on one I2C bus (1,024 total LEDs)
- Keypad Support – Can read a 3×13 keypad matrix (see datasheet)
- Arduino and Python Support – Libraries available for both platforms
Ideal For
- Custom LED matrix configurations
- Driving non-standard matrix modules
- LED signage and indicator arrays
- Combined LED display and keypad input projects
Package Contents
- 1× Adafruit HT16K33 16×8 LED Matrix Driver Backpack breakout
Specifications
- Driver Chip – HT16K33
- Matrix Capacity – 16×8 (128 LEDs)
- Keypad Capacity – 3×13 matrix
- Interface – I2C (8 selectable addresses)
- Max Boards per Bus – 8 (1,024 total LEDs)
The Adafruit 16x8 LED Matrix Driver Backpack - HT16K33 Breakout appears in the following collections:
