I just got my first ever printed circuit boards back from BatchPCB. Pretty exciting! One of the boards is a Toyota audio system interface, but it needs to have a chip replaced and the pinout is different, so that board is not totally usable. The other board is this breakout board for the Bluegiga WT12 bluetooth module.
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This breaks out all the pins so you have complete freedom, and it's still pretty small. I have another version I will probably release that breaks out only the UART pins and is compatible with the BlueSmirf pinout. That one is much smaller.
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The WT12 has iWrap4 firmware that is a very simple interface to a variety of common Bluetooth profiles. It's quite affordable; please see my Flickr page and BatchPCB page for more information and ordering.
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