Introduction - If you have any usage issues, please Google them yourself
Digital AVR Voltmeter and Amperemeter Project:
This is a digital voltmeter by ATmega8 microcontroller that measure voltage 0.0-40.0 volt with 0.1 volt resolution. furtheremore there are two minimum and maximum relay on this project. for Amperemeter you must parallel this project with a 1 ohm, 5 watt resistor.