Current measurement with arduino Answered
I try to measure current with hall-sensor amploc 25A, it sense magnetic-fields, offset voltage is 2.5V and I use arduino uno.
I get 519 value from analog pin and 37mV/A is hall sensor sensitivity.
My formula is outputValue = ((((sensorValue*5000.0)/1023.0)-2500)/37
multimeter shows 0.112amps when I put load but I dont gett correct value on LCD
Is my formula OK?