To measure external voltage we will use Arduino analog pins. Arduino analog pins can read voltage from 0 to 5v dc. To measure higher voltage we need voltage divider circuit. So will use resistance as voltage divider. In this tutorial you will learn to make simple voltmeter with Arduino Uno.
Continue reading “Arduino voltmeter: measure external voltage without module”Category: Arduino
Arduino is an open-source hardware and software platform. It consists of both a physical programmable circuit board (often referred to as a microcontroller) and a piece of software, or IDE. Arduino Uno is most commonly used Arduino board.
This category contains various DIY projects based on Arduino.