working with leds
i AM WORKING ON A PROJECT IN WHICH i HAVE TO LIGHT TwO SETS OF LEDS.
One set of led is white ultra bright led and other set is normal 5mm led red & green.
I need a circuit for the lamp which should switch on the white led for like 1hour and after that this white led gets dimm and other led (red & green) wil bright slowly.
In the circuit the time for glowing white led can be adjustable with timer. After making this circuit ,I will connect it with timer so that I can adjust the 1hours time and then it gets dimm.
Please help me out in this circuit .I am searching from last one week but I couldnt find.
Thanks in advance