Reference circuit diagram of an Arduino-compatible LCD backpack is shown below. What follows next is information on how to use one of these inexpensive backpacks to interface with a microcontroller in ...

The LCD panel can be used with any Arduino-compatible board, ... SD card read/write, touch control, and even the use of open pins on the chip(i2c,uart,general I/o analog/digital).

[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 … ...