PSP 2-Axis Analog Thumb Joystick | Adafruit ADA444 | Core Electronics Australia
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Wishiot Thumb Joystick Module Dual Axis Sensor Game Controller Sensor Joystick Breakout Module Compatible with Arduino PS2 Raspberry Pi (Pack of 2) : Amazon.ca: Video Games
Analog 2-axis Thumb Joystick with Select Button + Breakout Board