This is a library for using the I²C-based LED matrices with the HT16K33 chip. It supports both 16x8 and 8x8 matrices, as well as 7- and 14-segment displays.
This driver depends on:
Please ensure all dependencies are available on the CircuitPython filesystem. This is easily achieved by downloading the Adafruit library and driver bundle.
Installing from PyPI¶
On supported GNU/Linux systems like the Raspberry Pi, you can install the driver locally from PyPI. To install for current user:
pip3 install adafruit-circuitpython-ht16k33
To install system-wide (this may be required in some cases):
sudo pip3 install adafruit-circuitpython-ht16k33
To install in a virtual environment in your current project:
mkdir project-name && cd project-name python3 -m venv .env source .env/bin/activate pip3 install adafruit-circuitpython-ht16k33
# Import all board pins and bus interface. import board import busio # Import the HT16K33 LED matrix module. from adafruit_ht16k33 import matrix # Create the I2C interface. i2c = busio.I2C(board.SCL, board.SDA) # Create the matrix class. # This creates a 16x8 matrix: matrix = matrix.Matrix16x8(i2c) # Or this creates a 8x8 matrix: #matrix = matrix.Matrix8x8(i2c) # Or this creates a 8x8 bicolor matrix: #matrix = matrix.Matrix8x8x2 # Finally you can optionally specify a custom I2C address of the HT16k33 like: #matrix = matrix.Matrix16x8(i2c, address=0x70) # Clear the matrix. matrix.fill(0) # Set a pixel in the origin 0,0 position. matrix[0, 0] = 1 # Set a pixel in the middle 8, 4 position. matrix[8, 4] = 1 # Set a pixel in the opposite 15, 7 position. matrix[15, 7] = 1 matrix.show() # Change the brightness matrix.brightness = 8 # Set the blink rate matrix.blink_rate = 2
API documentation for this library can be found on Read the Docs.
Contributions are welcome! Please read our Code of Conduct before contributing to help this project stay welcoming.
For information on building library documentation, please check out this guide.