Free I/O Pins on 30b?

[Katie Wasserman]

Quote:but without a stable crystal controlled clock I don't think it is feasable.

Take another look at the schematic in the SDK and look at the PCB, you'll see that there's a place for a 32KhZ crystal. Although it's nowhere need the speed you need for USB you can use that clock to calibrate the main clock and probably get an accuracy good enough for bit-banged USB. However you're Sparkfun breakout board solution would certainly be easier all around.