I have been trying to use ACS712ELECTR 30A Module sold on ebay. I have used following formula
f = ((ADC * 0.0049) - 2.52)/0.066;
I have connected AREF to GND and AVCC to VCC (5V)
using 10 bit ADC resolution. But i am not getting stable output at zero current or nothing connected to circuit. I am getting 0.0934 or 0.1678 randomly both changing. I tried to put 100nf / 1uf cap on output and Gnd signal but no change. Values keep fluctuating. Same in the load condition i get one low value (False) and high value (True checked with multimeter).
What type of noise it could be ? how to get stable 0.00 reading while nothing connected to Current Sensor Module ?
I know there are many ACS712 threads in the forum but none of them have same issue like mine. so i have opened this thread.