Re:CutiePi – All-in-one Raspberry Pi tablet
by penkia on Thursday August 15, 2019 @08:30AM
(#20704551)
We're using the MCU to swtich power source between USB charging or battery, using it's ADC to serve as a voltage divider to get actual AD value from the battery, and a MP2636GR chip for charging and voltage step-up.
So yay battery percentage! ;-)