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Pdelcast
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01.12.2011, 11:00 PM

Quote:
Originally Posted by BrianG View Post
Those look like high output white LEDs which I assume is for "headlights", so they need to have ~20mA or more for that use. IIRC, typical white high brightness LEDs have a Vf of a little higher than 3v. So, on 6v, they shouldn't be driven enough to technically need a resistor, but obviously something is wrong.

If anything, I'd re-wire them up so instead of 2s2p, they are 1s4p. And then use the 100-150 ohm resistor for each LED. You could use a single common resistor for all LEDs in parallel, but that's not advised.
You know -- the LEDs that are on-board the MMP are driven by the BEC ... and they are 3P with 470 ohms on each.

So sounds to me like Brian's idea would be best.


Patrick del Castillo
President, Principle Engineer
Castle Creations

Last edited by Pdelcast; 01.12.2011 at 11:04 PM.
   
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