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From the MAKE Flickr pool
Member Spikenzie etched his own 8x8 LED matrix PCB. He's also posted helpful instructions and artwork used in his process -
The 8x8 LED matrix is a building block. There is no processor or circuitry other then then LEDs and the copper traces. It is simply an eight by eight 64-LED matrix on a PCB. The 8x8 has 16 pins on one edge, 8 connect to the rows and the other 8 to the columns. This allows the maker to use their preference of controlling circuitry.The way a matrix works can be a bit mysterious at first. Of course building one yourself is the best way to learn - Link
From the MAKE Flickr pool
Auraelius documents his technique for mounting 10mm LEDs on a Modern Devices 8x8 matrix board - Link
Related:
HOW TO - LED Matrix - Link
Spark Fun's Tri Color LED Matrix - Link
HOW TO - Watch futurama on an 8x8 pixel screen - Link
From the Maker store:
LED clock kit - Link
so that would make it common.... anode?
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yes, It appears so
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