adafruit-circuitpython-is31fl3741

Introduction

CircuitPython driver for the IS31FL3741 RGB Matrix 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-is31fl3741

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

sudo pip3 install adafruit-circuitpython-is31fl3741

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-is31fl3741

Usage Example

Matrix:

import time
import board
import adafruit_is31fl3741

i2c = board.I2C()  # uses board.SCL and board.SDA
# i2c = board.STEMMA_I2C()  # For using the built-in STEMMA QT connector on a microcontroller
is31 = adafruit_is31fl3741.IS31FL3741(i2c)

is31.set_led_scaling(0xFF)  # turn on LEDs all the way
is31.global_current = 0xFF  # set current to max
is31.enable = True  # enable!

# light up every LED, one at a time
while True:
    for pixel in range(351):
        is31[pixel] = 255
        time.sleep(0.01)
        is31[pixel] = 0

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.

Metadata

Release files for adafruit-circuitpython-is31fl3741 1.5.8

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-is31fl3741 1.5.8
File	Size	Uploaded
adafruit_circuitpython_is31fl3741-1.5.8.tar.gz	37.6 kB	Apr 23, 2026	Details

Built distribution (wheel)

Table of built distributions (wheels) for adafruit-circuitpython-is31fl3741 1.5.8
File	Interpreter	ABI	Platform	Reset
adafruit_circuitpython_is31fl3741-1.5.8-py3-none-any.whl 18.1 kB Apr 23, 2026	Python 3	none	any	Details

Total release size: 55.7 kB

Release files / adafruit_circuitpython_is31fl3741-1.5.8.tar.gz

Download URL	adafruit_circuitpython_is31fl3741-1.5.8.tar.gz
Size	37.6 kB
Tags	Source
SHA-256 checksum How to use checksums	`d06ec8a63fa9ec3e5326f69e00bb7243e309c7536eeb5aef216c02a58a16caa2`
BLAKE2b-256 checksum How to use checksums	`8ba912e209357d442706783f812571f86e3ab6e9c3ec0d6a99db9de0fb0b1d3a`
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_is31fl3741-1.5.8-py3-none-any.whl

Download URL	adafruit_circuitpython_is31fl3741-1.5.8-py3-none-any.whl
Size	18.1 kB
Tags	Python 3
SHA-256 checksum How to use checksums	`4f1723e576693cec839304dd9e2f9af99a38caf53e65a033405a2c58d469e3e4`
BLAKE2b-256 checksum How to use checksums	`9c432b445e906ff94962d85e50af735446c4046e6895d596f7fdae129c3694e1`
Upload date	Apr 23, 2026
Uploaded using Trusted Publishing? What is trusted publishing?	No
Uploaded via	`twine/6.2.0 CPython/3.11.15`