Two joystick gimbals (potentiometers) and two analog triggers (Hall effect sensors or potentiometers depending on revision). Digital Inputs:
(For console-specific wired connectors or the proprietary connector found on original Xbox 360 pads, consult a detailed PDF or wiring diagram — pinouts differ.) Xbox 360 Controller Schematic Pdf
This is what 90% of modders need. It’s not a full schematic, but a layout of the carbon contact pads on the membrane PCB. Xbox 360 Controller Schematic Pdf
: Most buttons use a "dual-trace" system where a signal is transmitted between two traces when pressed, rather than a simple pull-up to ground. Instructables Community Schematic Resources (PDF & Guides) Xbox 360 Controller Schematic Pdf