I use a DFRobot Romeo, but I'd rather have something a little cheaper, perhaps something based around an atmega32u4 to eliminate the ftdi. http://www.dfrobot.c

I use a DFRobot Romeo, but I'd rather have something a little cheaper, perhaps something based around an atmega32u4 to eliminate the ftdi. http://www.dfrobot.com/index.php?route=product/product&path=52_104&product_id=656 http://www.dfrobot.com/index.php?route=product/product&p...