Uh-Oh Battery Level Indicator
A kit that turns on an LED (Uh-Oh!) when the voltage of a given system drops below a user settable target. Utilizes the TL431 programmable shunt regulator.
- /hardware - All Eagle design files (.brd, .sch)
The hardware is released under Creative Commons Share-alike 3.0.
All other code is open source so please feel free to do anything you want with it; you buy me a beer if you use this and we meet someday (Beerware license).