Inside he found an Avago ADNS-5020 sensor. After grabbing the datasheet he discovered that it’s simply an I2C device. Above you can see the Arduino Leonardo he used for the first tests.

It works well enough, though, and he’s gone and doubled down on the Arduino way and bundled it up nicely into a library. In the previous article we covered [connor] demonstrating the motion ...

An Arduino is a microcontroller — a single board designed to control something and perform a specific task. Unlike a ...