Datasheet

CircuitPython

It's easy to use the TSL2591 sensor with CircuitPython and the Adafruit CircuitPython TSL2591 module. This module

allows you to easily write Python code that reads the luminosity and more from the sensor.

First wire up a TSL2591 to your board exactly as shown on the previous pages for Arduino using an I2C connection.

Here's an example of wiring a Feather M0 to the sensor with I2C:

Board 3V to sensor VIN

Board GND to sensor GND

Board SCL to sensor SCL

Board SDA to sensor SDA

Next you'll need to install the Adafruit CircuitPython TSL2561 library on your CircuitPython board.

First make sure you are running the latest version of Adafruit CircuitPython for your board.

Next you'll need to install the necessary libraries to use the hardware--carefully follow the steps to find and install these

libraries from Adafruit's CircuitPython library bundle. Our introduction guide has a great page on how to install the

library bundle for both express and non-express boards.

Remember for non-express boards like the, you'll need to manually install the necessary libraries from the bundle:

adafruit_tsl2591.mpy

adafruit_bus_device

You can also download the adafruit_tsl2591.mpy from its releases page on Github.

Before continuing make sure your board's lib folder or root filesystem has

the adafruit_tsl2591.mpy, and adafruit_bus_device files and folders copied over.