How to connect to analog input from positive wire and negetive wire? Thanks
Can you tell us what it is for ?
Do you have a sensor with positive and negative output ?
Do you want an OpAmp with positive and negative input ?
can u explain your question clearly?
Yes my sensor have a positive and negative output, also as my sensor are 4-20mliliamp I have to install a resistor as arduino only detect voltage, how do I connect resistor? positive wire to resistor and then to analog input? thanks