3 ms·
The DIY version would be a PCB with an ATmega32u4, an SD card slot, a similarly-sized LCD screen, and a lithium-ion battery. You'd attach a portable USB keyboar
by sowbug 7y ago
The DIY version would be a PCB with an ATmega32u4, an SD card slot, a similarly-sized LCD screen, and a lithium-ion battery. You'd attach a portable USB keyboard of your liking.