ESP32 Dementia Safety Wearable Prototype

I’m developing a small ESP32-powered wrist device that supports people living with dementia while keeping the human caregiver in charge of major decisions. The prototype already combines GPS geofencing, an MPU6050 for fall detection, routine-tracking logic and a single-button SOS feature, but I need a freelancer who can turn this concept into a reliable, test-ready unit.

Alert flow
• On any safety-relevant event the wearable must immediately do two things: vibrate and sound a buzzer for the wearer while simultaneously sending a push/SMS notification to the caregiver’s phone.
• The caregiver message is required whenever the device detects:
– Leaving a predefined safe area
– A possible fall (based on acceleration patterns)
– A missed routine or schedule checkpoint
• The wearer can also press and hold the single hardware button to raise an SOS that follows the same dual alert pattern above.

Scope of work
1. Firmware (ESP-IDF or Arduino framework) integrating GPS, MPU6050, Wi-Fi/BLE messaging, geofence logic, routine timers and power-saving states.
2. Simple Android/iOS companion demo app or webhook script that displays caregiver alerts with event type and timestamp.
3. Hardware integration guide: schematic, BOM and enclosure layout so I can reproduce the build on a small run of boards.

Acceptance criteria
• Alert latency under 5 s in Wi-Fi range and under 15 s over BLE-to-phone.
• False-positive fall-detection rate below 5 % in bench tests.
• Geofence accuracy within ±15 m in open sky.
• Clear, commented code and build instructions ready for hand-off.

If you have hands-on experience with ESP32, low-power wearables and mobile notifications, I’d love to see how you can help me bring this safety-assistance prototype to life.