arduino voltmeter

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

  1. joed3dge

    Thread Starter New Member

    May 15, 2009
    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?