Learn how to easily adjust the contrast of a 1602 LCD display using Arduino. In this quick tutorial, I’ll show you a simple trick to control the contrast electronically, without relying solely ...

The hardware [Reimecker] used is a regular ‘ol 8-bit Arduino with an attached LCD touch screen displaying 320×240 pixels of a ray cast environment.

He also integrated a 3W amplifier into this build, and everything is controlled by an Arduino including a small LCD screen which displays the current tuned frequency.