Hello,

I want to measure the current in a certain circuit. The problem is that i don't know the right (and best) solution! My first where i was thinking of was to place a low resitance into the circuit (ex. 1ohm) and the voltage across is a size 4 the current... But the problem is that the ADC on my µC is refered to ground (there are two circuit i want to measure but the ground is common for the two circuits)... What is according you the best solution? Using a external ADC? Or other suggestions...

Best regards, Bram