On some Arduino boards there is a Pin labelled as AREF or Analog Reference. This pin is very useful in cases where a stable and precise voltage reference is needed for the ADC. Practically the supplied voltage to the board can vary a bit, specially it can fall below the rated voltage depending on the… Continue reading Arduino Voltmeter – 2 (more precise)
Tag: arduino voltmeter
Voltmeter using Arduino
Using precisely calculated resistors and a stable power supply, Arduino can be used to work as a voltmeter. Below is the schematic Though I used an Arduino Uno, but any Arduino can be used. (If the 3.3v versions are used then calculations will have to be done accordingly). The resister for voltage divider has been… Continue reading Voltmeter using Arduino