I had to learn to walk before I could run.
[Trent M. Wyatt]’s CPUVolt library provides a fast way to measure voltage using no external components, and no I/O pin. It only applies to certain microcontrollers, but he provides example Arduino ...
If you are looking to learn more about electronics and building projects using micro controllers and mini PCs. A great place to start is using the Arduino platform, offering a selection of ...