Shoulder Buttons
The next pictures shows how to add L1, R1, L2 and R2 to the 2nd revisions of the Bittboy. Thanks to WenTao for this.
Warning:\ This guide is under development, in some console revisions the L2 and R2 button may not work with some CFW versions.
1) Placing the buttons
2) Identify the connectors
Circuit pins (no resistor boost is required for all keys, use the internal resistor boost):
L1 to SPI IC pin 1\
R1 to SPI IC pin 2\
L2 to SPI IC pin 6\
R2 to SPI IC pin 5\



