Hardware Spec (Draft)
- Microcontroller: To be confirmed by Pelican; target low‑power MCU capable of BLE and IMU integration.
- Sensors: 6‑axis IMU (accelerometer + gyroscope) sampling at 50–100 Hz; optical heart rate and SpO₂ sensor sampling at 1–5 Hz.
- Connectivity: BLE/NFC to mobile phone; offline‑first sync with phone; optional LoRa/4G/Satellite for remote areas.
- Emergency Button: Tactile button with haptic and LED feedback; triggers SOS event and audio recording.
- Power: Rechargeable battery sized for 24+ hour operation; wireless charging or magnetic pogo pins.
- Form Factor: Wearable patch or pendant; water‑resistant; comfortable for elderly and veterans.
- Note: Final specs will be updated when Pelican confirms bill of materials (BOM). Training data sampling rates should mirror final sensor frequencies.