Remember to always use the latest code version! Any previous versions may not work properly, although you can try to use them anyways if you'd like to. The newest version is "V2.1" found in releases.

The I2CKeyPad8x8 library implements the reading of a 8x8 keypad by means of a PCF8575. Smaller keypads, meaning less columns or rows (e.g. 5x4) can be read with it too. Sometimes you need to control ...

Abstract: This study addresses the practical approach of Project Based Learning with Arduino in the subject of electronics, the problem identified lies in the disconnection between theory and ...