Thank you for your answer!! I will use arduino uno so i can measure negative current
voltage to current rating of the probe to calibrate
Make that A/D value to current. Voltage has nothing to do with a current probe.The ACS712 outputs 10-90% of it's supply, not 0.5-4.5volt.Well, only if the supply is 5.000volt, which it rarely is.float current = (analogRead(A0) - 512) * 0.04878; // basic code for 20Amp sensorThis only works for smooth DC.Leo..
Last time I checked analogread0 represents voltage on analog input.
No it doesn't.