Matched the resonant frequency of the hardware buzzer to maximize volume for the turn on beep.
Further distinguished ON beep from OFF beep, making it easier for users to understand the state change.
* Added OCV_ARRAY from measured discharge curve testing and update ADC multiplier
The ADC resistor divider ratio is 0.6 -> multiplier should be 1/0.6 ~=1.667
We data logged a full discharge curve at constant 100mA draw over 15hours to get a realistic voltage curve for battery SoC measurements.
* Remove power.h in favor of variant.h
---------
Co-authored-by: Jason P <applewiz@mac.com>
Co-authored-by: Jonathan Bennett <jbennett@incomsystems.biz>