Quote:
Originally Posted by smartkid
- I'd like to be able to make something, perhaps a small LCD screen that could tell me the amount of charge left in the battery. So that I never drain it all the way and so that when it's charging we know when it's done. I believe the drop in voltage is how you can tell the amount of charge left? Like when the Vex controllers show voltage on the little LCD.
-Smartkid
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We'll I don't know about using a full fledged LCD, although that would be cool... and my encouragement if you decide to try. But, you might want to look into a Digital Panel Meter, or a regular panel meter. They are a simple solution giving you an idea of how much charge you have left.
All Electronics has some pretty affordable ones. In fact we used one on our FRC robot last year. Ours was the only one that had one, and the engineer who inspected our robot kind of liked it.
www.allelectronics.com
Dave, you're going to have quite the motor pool on Mars. :D - skimoose [more] 
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