This project combines two Arduino Uno boards: one as a master and the other as a slave. The master Arduino handles the LCD display and temperature monitoring using a DHT22 sensor. The slave Arduino ...

The difficult of this project is the only using two ports (A and B). Each 8x8 led matrix has 16 pins to connect, so 16x16 led matrix has 64 pins. Therefore, I didn't have enough pins from MCU ...

Instructables has posted a step-by-step guide to creating your very own dot-matrix display out of not much more than a collection of LEDs, a few wires, some resistors, and a microcontroller. The guy ...