L.I.P.S.
L.I.P.S. (Linear Interface for Paralysis Support) is a plug-and-play USB HID device translating lip and chin movements into precise computer inputs. Purpose-built for users with severe motor disabilities at 75× lower cost than commercial alternatives — no drivers or software required.
- ROLE
- PCB, firmware, enclosure, web config
- TIMELINE
- 2024 — 2025
- COST VS COMMERCIAL
- 75× cheaper driverless USB HID
- STACK
- C · Arduino · KiCad · Fusion360
Open-source assistive HID device for hands-free computer control via sip/puff and joystick
Commercial assistive input devices are prohibitively expensive, and bite-based mouthpieces cause dental fatigue over time. L.I.P.S. removes all three barriers — cost, comfort, and sensitivity — in a single open-source platform.
- 01
Sip & Puff: ultra-sensitive differential pressure sensor (1.5–3 kPa) for compromised lung capacity
- 02
Hall-Effect Joystick: magnetic sensing — no mechanical wear or stick-drift
- 03
Driverless USB HID: CH552G with native USB, zero driver installation
- 04
WebUSB Config: remap sip, puff, and macros directly in the browser
- 05
Custom PCB: USB-C, ESD protection, dual-sensor variant with isolated pads
- 06
CI/CD: automated compilation, linting, and E2E tests on every commit