Here is a useful circuit for Arduino lovers and experimenters. It is a simple digital voltmeter, which can safely measure input dc voltages in 0 to 30V range. The Arduino board can be powered from a ...

This collection of hardware is a diy voltmeter. It can measure up to 17V ... The LTC2400 ADC board is used to make the measurements, with the Arduino processing the output and taking care of ...

This, however, wasn’t quite good enough for Anthony Garofalo, who instead converted a prototype voltmeter he made using an Arduino Uno and a tiny OLED display into something that displays the ...