Adafruit
CharliePlex LED Matrix Bonnet - 8x16 Red LEDs
· MPN: ADA6115
Add a bright red 16x8 LED matrix to your Raspberry Pi with this Adafruit CharliePlex LED Matrix Display Bonnet. It sits on any Raspberry Pi computer with a 2...
Add a bright red 16x8 LED matrix to your Raspberry Pi with this Adafruit CharliePlex LED Matrix Display Bonnet. It sits on any Raspberry Pi computer with a 2x20 connector, giving you a compact grid of 128 charlieplexed LEDs for patterns, text and simple graphics.
The built-in IS31FL3731 Charlieplex driver runs over I2C, so it only uses the SDA and SCL pins and can share the bus with other I2C devices and sensors. Each LED can be PWM controlled individually, with 8-bit dimming for smooth lighting effects without lots of pin handling.
The driver includes display memory for 8 separate animation frames, letting you prepare multiple frames and switch between them with a single command. The Bonnet comes fully assembled with no soldering required, and Adafruit’s CircuitPython library works on Linux computers such as Raspberry Pi after a pip install.
Features:
- Matrix size: 16x8 LED display with 128 charlieplexed LEDs
- LED colour: Red LED matrix
- Raspberry Pi fit: Fits any Raspberry Pi computer with a 2x20 connector
- Driver: Built-in Charlieplex driver runs over I2C
- Individual control: PWM control for each individual LED in the 16x8 grid
- Dimming: 8-bit (256 level) dimming for each individual LED
- Driver chip: Uses the IS31FL3731
- Power: Runs happily over 3.3V power
- Animation memory: Enough RAM for 8 separate frames of display memory
- I2C pins: Uses only SDA/SCL pins and can share them with other I2C devices and sensors
- Assembly: Fully assembled with no soldering required
- Software: Uses Adafruit’s CircuitPython library for Linux computers like Raspberry Pi
- Examples: Example code is provided for simple graphics or text
Specifications:
- Product Dimensions: 65.0mm x 30.6mm x 5.5mm / 2.6" x 1.2" x 0.2"
- Product Weight: 8.1g / 0.3oz
Jargon buster
Plain-language definitions for the technical terms used above.
- CircuitPython
- A beginner-friendly version of Python designed to run directly on microcontroller boards. If a product supports CircuitPython, you can often program it by copying code files onto the board rather than setting up a more complex toolchain.
- I2C
- I2C is a two-wire communication bus used by many sensors and small modules. It matters because several I2C devices can share the same two wires, but each device needs a compatible address and your controller must support I2C.
- LED
- A light-emitting diode is a small electronic component that lights up when current flows through it in the correct direction. In this kit, LEDs create the flashing effect, so polarity and correct soldering matter for the project to work.
- PWM
- Pulse Width Modulation is a way for a digital pin to simulate variable output power by switching on and off very quickly. It matters for controlling things like LED brightness, motor speed, or servo-style signals from a microcontroller pin.
- RAM
- RAM is temporary memory used while a device is running, and its contents are lost when power is removed. A “Run in RAM” mode is useful for testing settings without permanently programming the module, but it may not support every feature.
- SDA/SCL
- SDA and SCL are the two signal lines used by an I2C bus: data and clock. Seeing these names helps you identify the correct connections when wiring I2C devices, even though Qwiic cables usually hide that wiring for you.
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Raspberry Pi
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