Wearable Dementia Guardian Device Prototype

About the project

ESP32-Based Wearable Dementia Safety & Voice-Reminder Prototype Project Overview I am looking for an embedded systems / IoT developer to build a single functional prototype of a wearable device called Mitra – Wearable Guardian for Dementia Care. This is a student innovation/competition prototype, not a commercial medical device. The priority is to create a reliable, compact and presentable working prototype at a reasonable cost. I am specifically looking for someone experienced with ESP32, GSM/SMS, sensors, audio playback, PCB design and small wearable electronics. --- Required Features 1. Emergency SOS - Physical, easily accessible SOS button. - When pressed, Mitra should send an actual SMS to a pre-configured caregiver phone number. - SMS should contain: - Emergency alert - Brief message - Pre-configured demonstration location - Google Maps link - Live GPS is NOT required for this prototype. - The location can be hardcoded in the firmware. 2. Fall Detection - Use an accelerometer/gyroscope such as MPU6050. - Detect a possible fall based on acceleration/orientation changes. - Trigger an appropriate caregiver alert. 3. Voice Reminders - Mitra should have a small speaker. - Voice reminders should be stored locally and played at scheduled times. - Example: «“Dadi, it’s time to take your medicine.”» - Ideally, the caregiver should be able to record their own voice through a simple phone interface and transfer the recording to Mitra. - Preference is real human voice recordings, not robotic TTS. 4. Connectivity - ESP32 as the main controller. - Wi-Fi/Bluetooth for caregiver communication. - GSM/cellular module for independent emergency SMS. 5. Battery - Rechargeable battery. - Charging and battery-protection circuitry. - Suitable for portable wearable use. --- Proposed Hardware The exact components can be recommended by the developer, but the expected architecture is approximately: - ESP32 / compact ESP32 variant - GSM/cellular module - MPU6050 or equivalent IMU - Physical SOS button - Speaker + amplifier/audio module - microSD/local audio storage - Rechargeable Li-ion/Li-Po battery - Charging/power-management circuit - Status LED - Custom PCB - 3D-printed/custom enclosure GPS should NOT be included in V1. --- Physical Requirements The final device should be a genuine wearable prototype, preferably a compact pendant/neck-worn device. Requirements: - No exposed breadboard in the final version - No loose jumper wires - Electronics enclosed securely - Large/easy-to-find SOS button - Speaker opening - Charging port - Lanyard/neck-strap attachment - Compact and neat appearance A custom PCB is preferred after the electronics have been tested. --- Development Approach I would prefer the following staged approach: Phase 1 — Functional electronics prototype ESP32 + GSM + SOS + fall detection + audio + battery Phase 2 — Firmware integration and testing Phase 3 — Custom PCB Phase 4 — 3D-printed enclosure Phase 5 — Final assembly and demonstration testing This is a one-unit prototype, not mass production. --- Deliverables Please include: 1. Fully working assembled prototype 2. Firmware/source code 3. Custom PCB design 4. PCB Gerber/design files 5. Bill of Materials 6. 3D enclosure 7. Basic caregiver interface/prototype interface 8. Wiring/block diagram 9. Basic operating instructions 10. Final testing and demonstration I would like ownership/access to the project source files so that the prototype can be demonstrated and further developed later. --- Important Prototype Simplifications To keep the project affordable and suitable for a student competition: - No live GPS required - Location can be hardcoded - No AI required - No cloud infrastructure required unless genuinely necessary - No medical certification required - No mass-production optimization required - No unnecessary advanced features The goal is a reliable, compact and impressive demonstration prototype, rather than a production-ready commercial product. --- Budget & Proposal Please provide a fixed-price quotation rather than only an hourly rate. Please separately mention: - Components - Firmware development - PCB design - PCB fabrication/assembly - Enclosure/3D printing - Caregiver interface - Testing - Shipping - Any other charges Target budget: ₹15,000–₹25,000 for the complete prototype. If your quotation is higher, please explain what additional work/features are responsible for the increase. Please include in your proposal: - Your experience with ESP32 and GSM/cellular modules - Previous IoT/wearable projects - PCB design experience - Whether you can provide a physical assembled prototype - Estimated completion time - Total fixed cost - Examples/photos/links of relevant previous work Please do not submit a generic Arduino/IoT project proposal. I am specifically looking for someone capable of developing a custom wearable prototype according to the above requirements.

Skills required