i have been reading and reading and posting all over..
I might aswell try here aswell. I cant seem to get a schematic that will work with my application from anyone..
I need to power 21 LED's either RGB 3.2v - 3.6v @ 30ma. Or a mix of 21 single color LED's , red, pink, blue, green, etc..
I want to be able to power it with a single AA rechargeable battery...
Can it be done? Can i get a joule thief to have a constant power so i dont fry my led's?
Any other info would be awesome.