Hi guys… Does anyone know how does one calculate or derive the value for these 3 parameters ? If under such scenario
A. Power Module vendor does not know these values
B. Misplaced of such information
C. One who DIY a working voltage and current sensor of their own
D. Only knows how to calibrate the Power Module if its working originally
BATT_AMP_PERVOLT
If using a shunt, just read it. For example, 50mOhm 20.
If Hall based (magnetic), datasheet of used chip.
BATT_AMP_OFFSET
Interrupt current and correct till 0 appears. For example, bidirectional Hall’s will output half of its supply voltage (if 5V, corresponding to 2.5).
BATT_VOLT_MULT
Inform MP of measured voltage and it will multiply.
