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LED Circuit needed

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LED Circuit needed
« on: November 02, 2012, 07:11:00 PM »
I'm looking for a LED circuit, either transistor or IC. Battery operated or wall wart operated, around 3-6 VDC. I want to operate a LED so that it brightens slowly (1-2 seconds) and fades the same amount of time. If the brightening and fading are variable, that would be good to, but not required.  Needed for my 'Time Machine' sculptur