Testing a regulator all the way down to zero volts to see how it behaves and finding an output level, below which bad things ...
If you often lose power where you live, whether because of seasonal storms such as hurricanes or due to other problems with the electrical grid, having a whole-house generator can be very convenient.
Obviously a FG-100 (ebay is a good source) ATMega328p 28pin DIP microcontroller AVR programmer/ISP (the Makefile defaults to using a USBTiny ISP) AVR toolchain (eg avr-gcc, avrdude and gnumake) ...
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