Firstly , i want to read analog current up to 20 mA then i want to convert this value to distance unit[mm].
How can i read analog current input ?(which sample code sholud i use for this job)
i have input cable which contains +,- terminal.i think that "+" is related to analog current input ,"-" is 0V/ground connection.
which terminal/pin should these two cable be connected on arduino board ?