Datasheet

Wiring the TSL2561 Sensor
This is an easy sensor to get started with. The breakout board comes with a 6-pin header strip that
you can use to plug the sensor into a breadboard or perfboard. Simply plug the header into a
solderless breadboard with the long pins down and short pins up. Place the sensor on top so each
pad has a header pin in it and solder the two together.
Next we will connect it to our microcontroller. In this case we'll be using an Arduino but nearly any
microcontroller can be used by adapting our code
Connect the VCC pin to a 3.3V or 5v power source.
Note: Currently shipping sensors have a 3.3v regulator built-in. If you have an older version of the
sensor that does not have the voltage regulator, it cannot be used with anything higher than 3.3V!
Connect GND to the ground pin.
Connect the i2c SCL clock pin to your i2c clock pin. On the classic Arduino
Uno/Duemilanove/Diecimila/etc this is Analog pin #5
© Adafruit Industries https://learn.adafruit.com/tsl2561 Page 5 of 14