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Originally Posted by Invigor
what do you use to power them, and which are the 12-14k ones? the blue or the ultra white? for the price this guy's selling these at, they look like fun to play with!
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I just use a typical 12v wallwart - puts out a pretty consistant 14.4v - which is perfect for driving arrays of 4 (3.6v to each), add in a 700ohm resistor - and you've got 20ma @ 3.6vdc.
Watch for his auctions that start at >10$ I got my first 20 LEDs for 7.99. The most recent purchase wasn't only 28$.
And the blues are much too blue for regular use - just the regular ultra bright white or whatever he calls them.
Andy