“ESP32 IoT Engineer for GPS + BLE Device”

PROJECT: ULTRA — Full IoT Engineering Package (Hardware + Firmware + Cloud + App)

This project covers the complete development of the ULTRA smart harness module, including hardware design, firmware development, cloud backend, Android app, OTA update system, and full end‑to‑end integration. This scope includes all features previously detailed in the £15,000 engineering proposal, now offered as a fixed‑price package.

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1. HARDWARE DEVELOPMENT (PCB + Electronics)
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• Full PCB schematic design (ESP32-based)
• Multi-layer PCB layout and routing
• Manufacturing-ready Gerber files
• Complete BOM (Bill of Materials)
• GPS module integration (high-sensitivity)
• BLE module integration
• Wi-Fi module integration
• IMU (accelerometer + gyro) integration
• Power management system (battery + charging)
• Reverse polarity protection
• Voltage regulation and filtering
• Antenna matching and tuning (GPS + BLE)
• Waterproof enclosure considerations
• Prototype support and debugging
• Hardware bring-up and testing

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2. FIRMWARE DEVELOPMENT (ESP32 / ESP-IDF)
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• GPS tracking logic (adaptive sampling + smoothing)
• IMU movement detection (motion, tilt, impact)
• Tamper detection logic (cover removal / access attempts)
• Breakaway detection logic (harness separation)
• Battery management + low-power modes
• BLE pairing + secure communication
• Wi-Fi fallback logic (dual-mode connectivity)
• OTA firmware update system (cloud-driven)
• Secure boot + device identity
• Error reporting + diagnostics
• Firmware ↔ Cloud communication protocol
• Event queueing + retry logic
• Real-time alert triggering

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3. CLOUD BACKEND DEVELOPMENT
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• Device registration API
• Owner registration API
• GPS storage endpoints
• IMU event storage endpoints
• Tamper + breakaway alert system
• Battery alert system
• Out-of-zone alert system (geo-fencing)
• Real-time event pipeline
• Database deployment (PostgreSQL or similar)
• Cloud hosting setup (Dockerised)
• Authentication + security
• Admin dashboard endpoints (internal use)
• OTA firmware distribution service
• Device heartbeat monitoring

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4. ANDROID APP DEVELOPMENT (PetGuard ULTRA)
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• BLE device pairing
• Live GPS map (real-time tracking)
• Alerts screen (tamper, breakaway, battery, movement)
• Device settings (sensitivity, update rate, etc.)
• Owner profile
• Pet profile
• OTA firmware update screen
• Device status screen (battery, signal, last update)
• Push notifications
• Cloud sync
• UI/UX design (PetGuard branding)
• App ↔ Cloud ↔ Device integration

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5. FULL SYSTEM INTEGRATION
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• Hardware ↔ Firmware integration
• Firmware ↔ Cloud integration
• Cloud ↔ App integration
• OTA update flow end-to-end
• GPS accuracy tuning
• IMU sensitivity tuning
• Alert reliability tuning
• Prototype testing support
• Debugging across all layers
• Final optimisation and polishing

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6. FIXED PRICE
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Total fixed price for the complete ULTRA engineering package:
£5,000 (all-inclusive)

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7. PAYMENT SCHEDULE
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• 40% upfront (£2,000)
• 30% after hardware + firmware core delivery (£1,500)
• 30% after backend + app + full integration (£1,500)

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8. CONFIRMATION
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Please confirm acceptance of the fixed price and payment schedule
so development of ULTRA can begin.