Embedded + Haptics Engineer — Wearable Assistive-Tech Prototype (Runner-Testable)

Overview We're an independent research project building a wearable assistive device that delivers graded haptic (vibration) guidance cues to help a runner with visual impairment stay on course. We already have a working software simulator and a defined design direction — we now need an engineer to build a physical, body-worn prototype that a person can actually wear and test while running. This is a build-to-spec engagement: the concept and design come from our team, and you provide the engineering and fabrication to bring it to life. Scope — Functional prototype Functional prototype from off-the-shelf components (microcontroller, motion sensing, haptic actuator array, battery) Firmware implementing our cueing logic A wearable form factor (belt or vest) that stays securely in place and tolerates motion and sweat 1–2 working units we can field-test in controlled, supervised conditions Required skills Embedded firmware (C/C++) on ESP32, nRF52, or similar; BLE Haptic feedback — driving a vibration-motor array with graded, spatial patterns (e.g., DRV2605 or equivalent) IMU/motion-sensor integration Comfortable taking a concept to a working, body-worn prototype quickly Strong pluses e-textile / smart-garment or soft-goods integration (or a partner who handles it) Prior wearable or assistive/accessibility device work Basic mechanical/enclosure design Mission-driven research prototype, not a funded product launch — budget is reasonable but lean; we value resourcefulness and clear communication.