On Thu, Jun 26, 2008 at 12:49 PM, Tom=E1s =D3 h=C9ilidhe = wrote: > > > Mark Rages wrote: >> Why not run the whole thing from 3V? Most microcontrollers are happy >> at 3V. >> Have you done as Olin suggested and traced the current v. voltage >> curve for your LEDs? I recommend you do this before deciding on a >> power source. >> > > I haven't picked my LED's yet, but I know their Vf will be less than 3 V. How are you planning on regulating their current? -- = Mark Rages, Engineer Midwest Telecine LLC markrages@midwesttelecine.com -- = http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist