Hmm. http://frontiernerds.com/brain-hack e
http://www.nonpolynomial.com/

Also https://github.com/beatbots/mykeepon
and https://github.com/kitschpatrol/Arduino-Brain-Library

Keepon Wiring:

red -> A0 VPu
black -> ground
white -> A4 data / SDA
green -> A5 clock / SCL

mind wiring:

black -> ground
orange -> Vin
yellow -> Tx (??)