Just got the ACS724 and have tried it in series with the 1212, the MCC33926 motor driver board outputs which are powering a 25D metal gear motor. The current feedback from the motor control board is very noisy, I’m not able to get resolution better than .1 amp which is a problem for my application.
I’m using an Texas Instruments MSP430FR2311 MCU to calculate RPM and do the DAC and it’s connected to a Raspberry Pi 3B+ via UART. Everything has a common ground. I tried the ACS724 with the 5VDC from the pi and from the MCU. The problem that I’m having is that the ACS724 is actually a lot noisier than the feedback from the motor control board. I’m not sure why that is? I tried a capacitor but that didn’t make any difference. I have attached a sample waveform from my scope.