Hi! I am working on Arduino Robot. I came across the following way of Wheel calibration:
As per the schematic I see that the TRIM value goes to the microcontroller via AD3/ TRIM. However, I am unable to find that how this AD3/ TRIM value affects the Motor speed. I see only IN_A1, IN_A2, IN_B1, IN_B2 as inputs to Motor Driver DRV8833PWPR which has no connection to AD3/ TRIM. Also the wheel calibration code does not do anything to write the TRIM values to IN_A1, IN_A2, IN_B1, IN_B2 to change the Motor speed.
I am wondering how the change in TRIM value changes the Motor speed. Does anyone has any clue on this?