The line of code LiquidCrystal_I2C lcd(0x20, 16, 2); utilises this port from the LCD I2C library to allow output from the Arduino to the screen. Moved the buttons and potentiometer to a separate ...

Displaying a Prolog query on LCD connected to an Arduino, which estimates the straight line distance between cities which don't have a direct connection with eachother (with the A-Star Algorithm).

Running out of GPIO pins? Learn how to connect multiple buttons to just one Arduino pin using clever wiring and resistor techniques. Perfect for compact projects, keyboards, or when using small ...