Thread: USB Voltmeter?
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Old 11-12-2008, 01:33 PM   #7 (permalink)
dcb
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Quote:
Originally Posted by MazdaMatt View Post
but you're better off with two wires per battery leading to an adc that can handle it.
Sorry to bust your chops here matt, but you have not given any specifics (i.e. a chip #). I don't know how one can make an assertion about betterness without discussing the specifics here.

I would agree it is another option, at best, but would probably be more work due to lack of previous arduino examples and lack of specifics from its suggester.

the divider leakage current can be accomodated with large resistors and a common ground under cpu control if sleep mode is desired.

Did you have a specific ADC in mind? What is it's leakage current and how much support circuitry does it need, and do you have to buy one for every battery, and is there prior open source work that the OP can build off of (schematics, code, etc)?
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