adafruit-circuitpython-is31fl3731

Introduction

CircuitPython driver for the IS31FL3731 charlieplex IC.

This driver supports the following hardware:

Dependencies

This driver depends on:

Adafruit CircuitPython

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-is31fl3731

To install system-wide (this may be required in some cases):

sudo pip3 install adafruit-circuitpython-is31fl3731

To install in a virtual environment in your current project:

mkdir project-name && cd project-name
python3 -m venv .venv
source .venv/bin/activate
pip3 install adafruit-circuitpython-is31fl3731

Usage Example

Matrix:

from adafruit_is31fl3731.matrix import Matrix
import board
import busio
with busio.I2C(board.SCL, board.SDA) as i2c:
    display = Matrix(i2c)
    display.fill(127)

Charlie Wing:

from adafruit_is31fl3731.charlie_wing import CharlieWing
import board
import busio
with busio.I2C(board.SCL, board.SDA) as i2c:
    display = CharlieWing(i2c)
    display.fill(127)

    # Turn off pixel 4,4, change its brightness and turn it back on
    display.pixel(4, 4, 0)   # Turn off.
    display.pixel(4, 4, 50)  # Low brightness (50)
    display.pixel(4, 4, 192) # Higher brightness (192)

Documentation

API documentation for this library can be found on Read the Docs.

For information on building library documentation, please check out this guide.

Contributing

Contributions are welcome! Please read our Code of Conduct before contributing to help this project stay welcoming.

Release files for adafruit-circuitpython-is31fl3731 3.4.8

For a detailed explanation of source distributions (sdists) and built distributions (wheels), please see the package formats documentation.

Source distribution (sdist)

Source distribution for adafruit-circuitpython-is31fl3731 3.4.8
File	Size	Uploaded
adafruit_circuitpython_is31fl3731-3.4.8.tar.gz	33.5 kB	Apr 23, 2026	Details

Built distribution (wheel)

Table of built distributions (wheels) for adafruit-circuitpython-is31fl3731 3.4.8
File	Interpreter	ABI	Platform	Reset
adafruit_circuitpython_is31fl3731-3.4.8-py3-none-any.whl 16.2 kB Apr 23, 2026	Python 3	none	any	Details

Total release size:49.7 kB

Release files / adafruit_circuitpython_is31fl3731-3.4.8.tar.gz

Download URL	adafruit_circuitpython_is31fl3731-3.4.8.tar.gz
Size	33.5 kB
Tags	Source
SHA-256 checksum How to use checksums	`93edc4f4ca0cfcf8e5f749b5fdb8e8ae8b72ef03bb123cde5eae9eaf21723e33`
BLAKE2b-256 checksum How to use checksums	`6453c2bc089a89f896a871c4a968fceecb101804451b4c101b74add18e1746ba`
Upload date	Apr 23, 2026
Uploaded using Trusted Publishing? What is trusted publishing?	No
Uploaded via	`twine/6.2.0 CPython/3.11.15`

Release files / adafruit_circuitpython_is31fl3731-3.4.8-py3-none-any.whl

Download URL	adafruit_circuitpython_is31fl3731-3.4.8-py3-none-any.whl
Size	16.2 kB
Tags	Python 3
SHA-256 checksum How to use checksums	`5f3175b4f354d23697da634543189c93441cec824296262284bfaf05bbd7d5db`
BLAKE2b-256 checksum How to use checksums	`4ce728cf599fbececcadaf401cdd26cb3b85fa55e98354d720c3b23d760154bd`
Upload date	Apr 23, 2026
Uploaded using Trusted Publishing? What is trusted publishing?	No
Uploaded via	`twine/6.2.0 CPython/3.11.15`