Prospector 100 Metal Detector !link! May 2026

End of Report

| Component | Cost (USD) | |-----------|-------------| | Coil assembly (11” DD) | $18.50 | | STM32 MCU + 24-bit ADC | $6.20 | | Display (2.4” LCD) | $7.80 | | Battery (5000 mAh Li-ion) | $9.00 | | Shaft + handle + arm cuff | $14.50 | | PCB + passives + connectors | $8.00 | | Plastic enclosure (ABS, IP54) | $4.20 | | USB-C charging board | $1.80 | | Assembly & test (labor) | $12.00 | | | $82.00 | | Packaging, manual, cable | $4.00 | | Total unit cost | $86.00 | prospector 100 metal detector

$349.00 Gross margin: ~75% (before marketing, warranty, shipping) 9. Risk Assessment & Mitigation | Risk | Probability | Impact | Mitigation | |------|-------------|--------|-------------| | EMI from smartphone chargers (20 kHz noise) | Medium | Medium | Add common-mode choke on coil cable; user guide suggests 1m separation. | | Coil ferrite saturation in hot ground | Low | High | Pre-production test in Australian ironstone – software adjusts transmit duty cycle 50% → 25%. | | Battery swelling in heat (dashboard storage) | Low | Medium | Use rigid steel-backed pouch cell; firmware cuts charge at 45°C. | | False audio in all-metal mode | High | Low | Implement “Smooth” filter (user adjustable) with 3 latency settings. | 10. Development Roadmap | Phase | Duration | Deliverables | |-------|----------|---------------| | Alpha prototype | Month 1–3 | Breadboard circuit, 14 kHz coil, basic AM mode. | | Beta prototype | Month 4–6 | Full PCB, 28 kHz switching, enclosure, companion app v0.9. | | Field test | Month 7–8 | 20 units to experienced prospectors (Australia, USA, South Africa). | | FCC/CE certification | Month 9 | EMC, SAR, safety. | | Production tooling | Month 10–11 | Injection molds for coil & control box. | | Pilot run (500 units) | Month 12 | QA test, adjust assembly line. | | Full production | Month 13+ | 10k units/month capacity. | 11. Conclusion The Prospector 100 offers a compelling blend of gold-specific features (switchable frequency, fast ground balance, hot rock rejection) and modern usability (app connectivity, lightweight build). Its main technical challenge – stable operation in severe mineralization – is addressed by a 24-bit ADC and adaptive ground tracking. At a projected retail price of $349, it undercuts mid-range detectors (e.g., Minelab X-Terra Pro, Nokta Legend) while providing specialized algorithms for small gold. End of Report | Component | Cost (USD)