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Topic: Voltmeter for up to 9V (Read 554 times) previous topic - next topic

Magic Ross

Hi All,

I've tried searching but can't find anything.  I can use my Arduino to act as a voltmeter for up to 5V - but I need to measure up to 9V batteries.  I obviously can't plug 9V directly to the analogue input pins.

Can anyone point me in the right direction to measuring up to 9V?


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