This is a demo of how Arduino speaks I2C/TWI device using the Wire.h library
(I looked up.. TWI means Two Wire Interface.. pfft.. Am i the only one unimpressed by how un-profound tech acronyms are?) The Arduino Uno uses pins A4 for data and A5 for Clock. For other Arduinos check -arduino.cc/en/Reference/Wire

In this experiment with the Keepon (disassembled) is set up as a Writer and the Arduino is setup as Reader.

Circuit:
Keepon's Microcontroller has 4 pads Vin, Clock, Data, Ground. Hook it up to the arduino UNO

Keepon -> Arduino
Vin -> A0
Clock -> A5
Data -> A4
GND -> GND

Code - arduino.cc/en/Tutorial/MasterWriter

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