Thread: USB Voltmeter?
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Old 11-13-2008, 12:42 AM   #15 (permalink)
dcb
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matt, attiny is just a little microcontroller, like a pic, but if you know an adc that handles floating ground that would be useful, I don't know how to search for it.

Here's a page that provides some more ideas, a basic stamp based battery individual battery monitor. He has plain optos on each battery that draw a continuous 25ma (maybe) so not 100% ideal or easy to disengage in a sleep mode, but still plenty to think about: BATTERY MONITOR





I also have to think that too many chips and a network will add to the "leakage" power consumption just as a voltage divider would. I wonder if you can make an auto-ranger out of a 4051?
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