* Just set LED_BUILTIN universally to -1, as we don't use it.
* LUD_BUILTIN workarounds
* Squash the LED_BUILTINs that sneaked in
* Don't kill valid pin derfine
* 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
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Co-authored-by: Jason P <applewiz@mac.com>
Co-authored-by: Jonathan Bennett <jbennett@incomsystems.biz>
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