Testing power switching (Update 3) 

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This is an excellent feature and will certainly make MutantC more in line with commercially-made handheld devices. GREAT SUCCESS! Does MutantC currently have the hardware in place to read the battery's voltage on the esp32? Seems like we would need a voltage divider, maybe a diode or two, going to an analog input. If we had the hardware, then we could blink a red LED to indicate low power and maybe even pass that data over to Linux, to determine battery percentage and time to empty/full charge, just like a laptop.

have you considered selling a complete assembled kit?