Xbox Adaptive Controller Flight Joystick

NOTE XAC firmware released in June 2024 maps the joystick hat switch to the XAC dpad. See https://github.com/touchgadget/xac_onehand_controller for details on remapping the XAC dpad to the XAC right joystick. This is a simpler alternative to this project.

xac_onehand connects a USB flight stick such as a Logitech Extreme 3D Pro to both USB ports on an Xbox Adaptive Controller (XAC). This allows one handed players to play two joystick games.

This project was inspired by an older XAC joystick splitter project. This project uses newer boards and is simplified by using QWIIC/Stemma QT to connect the boards. No soldering is needed for one option.

Note the cut red wire. More below. The wire ends are left flying to make clear in the photo the red wire is cut. The ends should be trimmed closer to connectors.

Easy Build for Two Logitech Flight Sticks

This works with the Logitech Extreme 3D Pro and the Logitech X52 H.O.T.A.S. joysticks. No soldering. The Thrustmaster joystick does not work with this configuration.

1 X Adafruit QT Py RP2040
1 X QWIIC/Stemma QT cable
1 X Adafruit Feather RP2040 with USB Type A Host
1 X Adafruit Case

The Feather RP2040 with USB Type A Host board plugs in to the XAC left USB port. The flight stick X and Y axes control the XAC left thumb stick.

The QT Py RP2040 plugs in to the XAC right USB port. The flight stick Z/twist axis controls the right thumb stick X axis. The flight stick hat switch forward and backward control the right thumb stick Y axis.

The RP2040 USB host sends joystick parameters to the QT Py over the QWIIC/Stemma QT I2C port. The QT Py relays the joystick parameters out its USB port.

Build supports the above sticks and the Thrustmaster T.16000M FCS

This works with the Logitech Extreme 3D Pro, the Logitech X52 H.O.T.A.S. joysticks, and the Thrustmaster T.16000M FCS. The QT Py RP2040 and USB Host BFF must be soldered.

2 X Adafruit QT Py RP2040
1 X Adafruit QT Py RP2040
1 X QWIIC/Stemma QT cable
1 X Adafruit Case

The Feather RP2040 with USB Type A Host board plugs in to the XAC left USB port. The flight stick X and Y axes control the XAC left thumb stick.

The RP2040 USB host sends joystick parameters to the QT Py over the QWIIC/Stemma QT I2C port. The QT Py relays the joystick parameters out its USB port.

Warning! Cut the red wire.

Cut the red wire on the QWIIC cable to avoid damaging the boards. Both boards are sourcing power on the QWIIC red wire. Power outputs should never be connected to each other. Both boards are powered from their USB connectors so there is no need for power from the QWIIC cable.