Kit that turns on an LED when voltage drops below a settable threshold. Available from SparkFun Electronics.
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hardware Initial commit Dec 15, 2013

Uh-Oh Battery Level Indicator

Uh-Oh Battery Level Kit
Uh-Oh Battery Level Indicator Kit (KIT-11087)

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.

Repository Contents

  • /hardware - All Eagle design files (.brd, .sch)

License Information

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).