We finally have everything squared away for Maker Faire 2013 and we should be able to show off an open-source LED controller. That design is complete, however, I still wanted to be able to give something away. I settled on creating a PCB business card which doubled as an SMT prototyping board on the back. I did a few iterations and settled on something that was all surface mount. There are pads for an SMT mini-USB port, a 32qfp,80tqfp and 64 pin IDC side-connector. All of the quad footprints will accept smaller packages with the same pitch and the IDC pads are designed in such a way that the 0.8mm PCB can be soldered between the pins of a standard 2.54mm/0.1″ connector. There is also a grid of pads that have 1.27mm pitch in one direction and 0.65mm pitch in the other direction so they can accommodate a SOIC one way and TSSOP the other way. The finish is ENIG with a high performance white solder mask so it should stand up to soldering without discoloring.
Stop by the mobius.io table and just ask if you would like to get one of these. Gerbers for this card are here: mobius_io_card2013.
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