Hi, I am using an acs712 30A sensor to measure current from a 48v( 52 actual) battery to the controller of a bldc motor.
The Rawvalue I get at no load connected is 438.
Shouldnt this be close to 512? Also if I use an external power source (5.10v) for the acs I get a no load reading of 650.
In the second case, I also have a AD/DA module connected so i am measuring the current( cannot use serial.print because of DAC and only one serial connection in Arduino Uno) saving it to the eeprom then reading it. ( First dividing by 10 to keep value below 255)
Any ideas would be helpful. Thanks.