The first time you turn on your TV, you’ll see a setup option for a “home” mode ... to get deeper black levels than you can with most LCD sets.) Contrast: Also called white level, contrast ...

The hardware comprises an Arduino Nano or compatible, a standard 16x2 LCD display (used in 4-bit mode) with backlight and contrast adjustment, three pushbuttons (DOWN/SET/UP, each with a 470 nF ...