The title says it all – this article describes a microcontroller-compatible current sensor module you can build yourself, using an inexpensive 8-pin chip as an ‘active shunt’ for measuring ac/dc ...

Description: A simple test code for the Saleng-ACS712 module. Simply upload and open the serial monitor with a baud rate of 9600. Connect as follows: Saleng Uno Saleng-ACS712 5V + / V GND - / G A0 OUT ...

This library supports ACS712 current sensor modules of 5A, 20A, and 30A. The ACS712 current sensor module is a fully integrated, hall-effect-based linear current measuring device. It can measure both ...

Since the IC can measure in both direction, OUT pin outputs VCC/2 (2.5v) when there’s no current, and other values which may be lower and greater than VCC/2 depending on current direction to report ...