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Topic: Voltmeter for up to 9V (Read 577 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?

Thanks,
Ross.

Osgeld

http://www.raltron.com/cust/tools/voltage_divider.asp
http://arduino.cc/forum/index.php?action=unread;boards=2,3,4,5,67,6,7,8,9,10,11,66,12,13,15,14,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,86,87,89,1;ALL

Magic Ross


http://www.raltron.com/cust/tools/voltage_divider.asp


Perfect.  Thank you.

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