Author this is Igor (Igor2000xp) https://github.com/igor2000xp/Arduino-The-Secret-Voltmeter This sketch is designed to use Arduino as a 4-channel voltmeter. The level ...

You'll need an Arduino/Genuino Uno and N number of resistors (I used 3) to make a voltage divider if the voltage you are measuring is above 5v Upload the Arduino_voltmeter.ino onto your Arduino.

Voltmeters aren’t terribly expensive, but it’s always more fun to build your own devices. YouTube DIYer Educ8s builds a cheap voltmeter for less than $10 using an Arduino and a voltage sensor. A ...

Abstract: Power consumption as one of main problems in the development of efficient wireless sensor network, was assessed in this paper. The power consumption of Raspberry Pi based wireless sensor ...