Quote:
Originally Posted by achang1
1. what does 820 ohm *9 and 330 ohm *9 mean?
i see that the 820 is the "Bigger" resistor, but i think it means thats the running lights
and the 330 is the smaller one to provide full flow?
oh and *9 is apparently 9 total for his project.
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Those are resistor values for 1/4 watt resistors in 820 ohm, 330 ohm, and 270 ohm ratings.
More resistance = less power delivered
I'm not sure what the spec on the LEDs he used are. But should you want to double check his resistor choices you can use an LED calculator.
http://www.hebeiltd.com.cn/?p=zz.led...tor.calculator