Our good friend Jimmie P Rogers— of LoL Shield fame, amongst many of us who love Arduino and LEDs —has a brand new tattoo of the resistor color code: Black, Brown, Red, Orange, Yellow, Green, Blue, Violet, Gray, White.  I’m pretty sure that Jimmy himself has known this color code since he was in diapers, but now he has an always-present chart that he can use as a visual aid while teaching electronics.  And at five inches across, it doubles as a ruler (albeit one that will grow less accurate with age).

So, that’s pretty neat.  But two things bring this above and beyond the “usual” coolness of a geek tattoo.  First, Jimmie designed it in Processing, and second, as an open source tattoo, you can download the source code on his web site.

And for those of us who may be a little less committed: Our own favorite mnemonic for the resistor color code is “Black Beetles Running On Your Garden Bring Very Good Weather.”