This project shows how to connect an LCD screen to an Arduino Mega 2560 and use potentiometers (knobs) to adjust the screen’s contrast and control an extra function, like brightness. Explaining the ...

This project uses an Arduino Mega to take input from a push button and display Morse code (dots and dashes) on a 16x2 I2C LCD screen. A short press on the button creates a "dot" (.), and a long press ...