Hi, I need to measure currents in a PSU between 0 and 3A with at least 10mA accuracy. I thought an ACS712 Hall sensor would do it but there I barely get 185mV/A, insufficient to get any decent measurement out of the ADC on an Arduino Uno. I may go with opamps to amplify the sensor output but then I…

DC current sensing with INA219B

Wawa September 18, 2016, 4:57am 4

INA169.

No onboard A/D. Just current to voltage that the Arduino A/D can measure.
Leo..