This project is a great example. [Scott Daniels] takes a look at the other voltage measurement options available to AVR chips used by Arduino.

This Arduino project involves measuring both AC and DC voltages using the ZMPT101B voltage sensor and an analog pin, respectively. The AC voltage is read from the ZMPT101B sensor connected to pin A0, ...

Build Your Own Arduino Voltmeter Circuit and Voltage Divider Which Can Measure Voltages From 0V to 30V, Including 12V. Visit To learn More.

How to Build a Digital 220-V AC Dimmer with Arduino How to Build a Digital 220-V AC Dimmer with Arduino AC loads are everywhere around us because most home appliances are supplied with the mains ...

Murata Power Solutions DATEL DMS-20RM voltmeters can measure the true-rms value of complex ac voltages and, with an input frequency range of 47 - 1kHz. Applications include consumer ...

Measure capacitors without removing them from a circuit. The method yields proper values even if ssignificant effects by parallel resistance is present. Estimates of parallel resistance as well as ESR ...