Building a special-function USB keypad or gaming device used to be hard work. But today between hardware and software design availability, it’s child’s play.

If you are searching for a fully featured USB programmable keypad for your PC you may be interested in the Adafruit MacroPad RP2040 starter kit which is now available to purchase direct from the ...

A simple Arduino project to measure the stability of USB power supplies. This project can easily be reconfigured to be a simple digital voltage meter.

Watch the video below to learn more about his Arduino-based portable keypad that connects to your Arduino development board and offers the complete alphabet, numbers 0-9 as well as several commands.

For example, take the lengths to which [rehsd] was willing to go in order to support standard USB mice on their 6502 machine. Code for mapping mouse movement to digital output.