A few years ago, I bought an Arduino Uno starter kit and I haven’t used much since then. Recently, I decided that is time to do something with it, so I build a simple logic gates simulator with LEDs and an LCD screen.

The code is in Github. Here are some pictures

Schematic

Controls

Press this button to change the logic gate.

Press this button to select the logic gate shown on the LCD.

These two button are the inputs.

I have selected the AND gate, so If I press both buttons the LED lights up.

There are 6 logic gates to choose from.