Measuring voltage over a resistor

soulid:
I'd like to measure that with the arduino.

That's a little more difficult, as I said the arduino will be damaged if subjected to greater then +5vdc. Maybe with voltage divider resistors wired to both side of the resistor to be measured would work but kind of cluggy. Would have to see the wiring you are presently using for the resistor in question.

Lefty