Most common Insertables, Boarduino, Ardweeny, RBBB...?

buzzdavidson:
Teensy from PJRC:

Thanks for the info, but Im mainly talking about ones that have arduino compatible pin outs, 14 digital 6 analog

The fio is pretty cool, I hadn't had much exposure to it.

Anyone have a picture of the fio inserted in a breadboard, all the pictures I could find were only the board it self.