Project Codename: TerraPulse Version: 1.0 Date: April 14, 2026 Status: Pre-production Prototype 1. Executive Summary The Prospector 100 is a purpose-built, digital VLF metal detector targeting intermediate to advanced prospectors. Its primary differentiator is an advanced Ground Balance (GB) system with manual and tracking modes, specifically optimized for highly mineralized ironstone and magnetite-rich soils (common in goldfields). The device operates at a selectable frequency (14 kHz or 28 kHz) to balance depth on large targets and sensitivity on small nuggets.
$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. prospector 100 metal detector
| 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 | Project Codename: TerraPulse Version: 1
End of Report