Using the Pimoroni Display - O - Tron HAT is easy. First, make sure it's properly connected to your device. If you choose to use the GPIO header, attach it carefully. The capacitive touch buttons on the device let you navigate through on - screen menus or input data. Just tap the buttons gently. To monitor memory usage and CPU load, start the Pimoroni Python support that comes with the HAT. The six - zone RGB backlight and LED bar graph will show you real - time information in a colorful way. When it comes to maintenance, keep the device in a dry and clean place. Avoid touching the LCD screen with dirty hands to prevent smudges. If there's dust on the device, use a soft, dry cloth to gently wipe it off. Don't try to disassemble the HAT unless you're an experienced user, as this could damage the internal components.