[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 ...

Makers, developers, and hobbyists looking for a way to measure both voltage and current simultaneously may be interested in a new Arduino project published on the official Arduino blog. This project ...

This file type includes high-resolution graphics and schematics when applicable. It's a common challenge to measure voltages that exceed the operating voltage of the ADC used as part of the ...