Hi,I would like to measure a voltage drop across a resistor. The voltage over that resistor is 0,7V to 1.4V although the voltage at the resistor can vary between 10 to 14V (that's why the voltage drop is so interesting).How can I do that?
I'd like to measure that with the arduino.
If you power arduino with a battery, you can do that measurement.
QuoteIf you power arduino with a battery, you can do that measurement.How? The arduino board must still share a common ground with the voltage source driving the constant current driver so I don't see how that solves the 'too high a voltage for an arduino AI pin, no matter how you power the arduino board?Lefty
How can I do that?