The Thing Posted January 21, 2006 Share Posted January 21, 2006 I want to create a circuit that dims or brightens a LED. I want the LED to glow BRIGHTLY as the environment around it gets darker, and vice versa. I know I have to use a photovoltaic cell and maybe transistors, but the exact wiring of this circuit escapes me. I will probably also use a separate power source for the LED, but maybe not. Help please! Link to comment Share on other sites More sharing options...
5614 Posted January 21, 2006 Share Posted January 21, 2006 Wire an LED and an LDR (light dependant resistor) as a potential divider. Potential dividers are quite simple - look em up on google if you need to. Link to comment Share on other sites More sharing options...
The Thing Posted January 21, 2006 Author Share Posted January 21, 2006 ... OMG OMG Thanks 5614. Arrrg I need to go shoot myself. EDIT: Crap, missed. Link to comment Share on other sites More sharing options...
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