I have a project whereby I am using 5mm Clear LED Extra Bright 20,000mcd. What resistor should I use to gain the most brightness without burning out the LEDs? I currently have 10-kohm .25 Watt carbon filters and some resistors that came with my Arduino (22O-ohm and 27O-ohm). I noticed there is a bi…

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tkbyd September 25, 2012, 9:20am 3

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