An Arduino is a much better choice than a Raspberry Pi for tasks that require real-time input and responses. While a Pi can ...

What Is Arduino? A microcontroller is a small computer, generally about 1/1000 as powerful as the average laptop, and in this case, with a USB port and a series of pin connections.

[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 Ar… ...