Quantity   Component name
1 × Wacom I2C digitizer (W9013 based). You can find this exact OEM part by searching for Lenovo yoga book keyboard replacement
2 × 4.7kOhm Resistor for pull-up on the original probing with my Laptop open. there're pull-up on the bus somewhere on the main board
1 × Logic Analyzer that accept 1MHz [optional] I don't have much buck to buy the reliable Logic analyzer, but at lease my Arduino UNO SUMP logic sniffer done the job and doesn't cause the i2c bus to lock up.
1 × STM32F3 Discovery Board in fact, any STM32 should work with some code modification.
1 × Teensy++ 2.0 For the Arduino version, Other teensy might work as well