In Reply to: Re: controlling leds posted by David Ashby on 11/27/02 at 5:32 AM:
Many thanks, I gave thet circuit a go and it works great. Now I need some help in designing a small circuit. I want to be able to fade and chase through 3 channels of LEDs (3 circuits). for example channel A will fade up , so only A is on, then channel B will fade up so both A and B are on. The channel A should fade down leaving just B on. Then channel C fades up so that B and C are both on. Then B should fade down leaving just C on. Then A fades up so C and A are on then C fades down so we are back to the beginning with A again. So there are 7 steps in total.
I need to be able to adjust the time it takes to fade from 0% to 100% with a pot and the duration each step is on for with another pot. Also a switch a turns all 3 outputs to 100% would be usefull.
The overall levels can then be adjusted by the 3, already existing, pots.
Hope your able to help.