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Driving LEDs (Attn: Electronics Geeks) by MrTrick 2007-06-03 19:31:26
I've got a plan, but not enough analogue knowhow to implement it. I want to build a night-light with a pic12F uC (specs), and an RGB LED (specs), powered by 2 rechargeable AA batteries. The 2.4 V from the batteries is enough to run the uC, but not enough to run the LEDs.

This page has a fairly simple circuit to step up the voltage to drive 1 LED. How would I instead run a trio of them? The uC needs to be able to control the LEDs individually.

[ Reply ]
  I could be completely wrong here, but by sgrunt2007-06-03 19:35:26
    Trouble is... by MrTrick2007-06-03 19:42:00
      Well, I can see a couple of other possibilities. by sgrunt2007-06-03 20:01:56
  Possible circuit... by MrTrick2007-06-03 20:33:55
    Yeah, something like that. (n/t) by Egaeus2007-06-03 20:48:12
      Any problems? by MrTrick2007-06-03 20:51:27
        No, actually, that's what I was going to by EnzoMatrix2007-06-03 23:51:27
  Question: by Egaeus2007-06-03 20:45:40
    Because... by MrTrick2007-06-03 20:50:26
  That's a flashing LED. by RetiQlum22007-06-03 23:08:38
  I think I'd opt for 1 bigger step-up converter by ttlogic2007-06-03 23:18:04

 

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