The data entered through the 4x4 keypad is sent to the Arduino via the I2C communication protocol. The degree command entered is sent to the A4988 module by the Arduino, and the stepper motor moves to ...

This project is an Arduino-based password entry system that uses a 4x4 keypad for input and a 16x2 I2C LCD display to show messages. The system allows users to input a password, which is then ...

[Johngineer] found himself in need of an I2C sniffer, but didn’t have one available. Necessity is the mother of invention, so he put together this I2C sniffer sketch for Arduino. The arduino will ...