16×2 Parallel LCD ( Hitachi HD44780 driver compatible) How to make an Arduino Voltmeter. As you may well know, Arduino’s analog inputs can be used to measure DC voltage between 0 and 5V (when using ...

If you have an Arduino lying around, you’ve got a simple digital voltmeter. The sketch (and the hardware setup) below turns your Arduino with a 16×2 (I 2 C) LCD into a single-channel digital DC ...

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 ...