Connecting a Joystick to PSP: Limited Options, Mostly Impractical

The PSP has no standard joystick port (USB host, Bluetooth HID, or proprietary). Direct connection of a joystick/flight stick is not supported by the hardware or OS.

Workarounds (Niche & Limited)

• PSP Go + Bluetooth Controller: Pair a DualShock 3, DualShock 4, or 8BitDo controller via Bluetooth. Game support varies wildly—most PSP games don't recognize external controllers.
• PC Emulation (PPSSPP): Play PSP games on a computer with any joystick, HOTAS, or gamepad. Full control mapping, save states, upscaling. Best practical option.
• Custom Hardware (DIY): Arduino/Teensy projects emulating a PSP peripheral via the serial/expansion port. Extremely complex, experimental, not practical for gaming.

Caveats

• Very few PSP games natively support external controllers (mostly homebrew).
• Touch-centric games (Patapon, LocoRoco) won't play well with a joystick.
• PSP Go Bluetooth is primarily for PS3 Sixaxis/DualShock 3 pairing—limited device support.

Using a joystick on a real PSP is a niche, largely unsupported endeavor. For flight sims or arcade ports, PPSSPP on PC is the only viable way to use a proper stick.