Datasheet

Wiring & Test

You can easily wire this breakout to any microcontroller, we'll be using an Arduino. For another kind of microcontroller,

just make sure it has I2C, then port the code - its pretty simple stuff!

Connect Vin to the power supply, 3-5V is fine. Use the same voltage that the microcontroller logic is based off of.

For most Arduinos, that is 5V

Connect GND to common power/data ground

Connect the SCL pin to the I2C clock SCL pin on your Arduino. On an UNO & '328 based Arduino, this is also

known as A5, on a Mega it is also known as digital 21 and on a Leonardo/Micro, digital 3

Connect the SDA pin to the I2C data SDA pin on your Arduino. On an UNO & '328 based Arduino, this is also

known as A4, on a Mega it is also known as digital 20 and on a Leonardo/Micro, digital 2

The TSL2591 has a default I2C address of 0x29 and cannot be changed!

Install Adafruit_TSL2591 library

To begin reading sensor data, you will need to install the Adafruit_TSL2591 library (code on our github repository). It is

available from the Arduino library manager so we recommend using that.

From the IDE open up the library manager...