This device monitors a 3 cell lithium battery to prevent any cell from going below a voltage threshold. Most ESCs can monitor all three cells, but only 'as one'. Should one cell drift lower than the others, it is likely to get damaged. The more cells you have the greater the risk. This circuit prevents that. It can also provide valuable flight data. LVC2 is a version that can monitor 2 separate packs in a twin.
The program is written for Microchip's PIC12F683 chip and the BoostC compiler. Other chips with at least 3 ADCs should work too. As with many of their chips this one has a 256 byte EEPROM flash memory. This can store up to 256 events which I have programmed to be 128 highest throttle positions and 128 lowest low cell values. With heatshrink covering, my circuit weighs 13.5g.
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