To start, I have no experience with electronics except what I've been googling the past week. What I'm having issues with is finding a way to make a voltmeter that functions like an led vu-meter would.
What I'm making is a gear driven dynamo and I want to make a visual representation to show the user that a faster spin produces more voltage by using LED's as user feedback. It is not important that it is accurate just that a faster spin makes more lights come on.
How can I make a volt-meter show that a dynamo is producing more voltage?
additional note: The intention is to make the dynamo the only source of power as well as what is being metered.