arduino voltmeter

Discussion in 'The Projects Forum' started by joed3dge, Jan 20, 2010.

  1. joed3dge

    Thread Starter New Member

    May 15, 2009
    5
    0
    For one of my first projects for my arduino, i thought i would try to implement a simple voltmeter. Basically i was thinking i would take advantage of the fact that the analog input is basically a voltmeter already. so what i need to do is figure out how to take a voltage on a rage, say -10V to +10V and map that to a output voltage of 0 to 5V. I was thinking i would probably do something with op-amps, but i dont know very much about them. could anyone help?
     
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