This project is a simple Arduino countdown timer that uses a knob to set the time and buttons to adjust the countdown. It also includes a buzzer and LED lights for feedback. I have made this project ...

You have a timer and clock in just about every single device out there these days, but if you want to build you own, Instructables user GeraldF6 shows you how to do so with a Arduino. The project here ...

This project connects a 16x2 or 20x4 LCD Display to an Elegoo Mega 2560, allowing it to display messages or real-time data. The project supports both I2C communication (recommended for fewer wires) ...