Changes in hardware:
- MAX17048 for battery monitoring instead of ESP32 ADC
- Onboard LiPo protection for overvoltage, undervoltage and overcurrent (DW01A) (issue #53)
- Testpoints added for critical signals
- Capacitor on ESP32_EN changed from 100nF to 1uF ( issue #62)
- Easier to source LiPo charger (TP4056)
- LiPo charger status input fixed(issue #55)
Changes in software:
- MAX17048G added as source for battery stats (enabled by defining board revision 4 in Platformio.ini)
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