DIY Metal Detector Kit – Soldering Assembly STEM Training
DIY Metal Detector Kit – Soldering Assembly STEM Training
LOTHYE DIY Handheld Metal Detector Electronic Soldering Kit
Build your own handheld metal detector from scratch! This DIY electronic component kit from LOTHYE is the perfect hands-on project for electronics students, hobbyists, and makers looking to sharpen their soldering and circuit assembly skills. Once assembled, the compact detector uses a buzzer alarm and flashing LED indicator to alert you whenever metal is nearby — great for games, safety checks, and practical learning.
⚠️ Important: This kit ships as individual loose components that require soldering to assemble. Soldering tools and batteries are not included. Basic circuit and soldering experience is recommended. Component colors may vary by batch but do not affect functionality.
Key Features
- Dual Alarm System: Built-in buzzer and flashing red LED indicator activate simultaneously when metal is detected.
- Adjustable Sensitivity: Onboard potentiometer lets you fine-tune the detection threshold to suit your needs.
- Compact & Lightweight: PCB dimensions of 60 × 185 mm make this a portable, easy-to-carry device once assembled.
- Detection Range: Detects metal objects up to 3–5 cm away; larger metal surfaces are detected at greater distances.
- Low Power Consumption: Runs on two button batteries (3–5V); working current ~23mA during alarm, ~3.7mA in standby.
- One-Click Operation: Simple, straightforward to use after assembly — ideal for beginners and classroom projects.
- Versatile Uses: Gaming and entertainment, basic safety checks, STEM education, and electronics training.
Technical Specifications
| Working Voltage | 3–5V (two button batteries) |
| Working Current | ~23mA (alarm active) |
| Standby Current | ~3.7mA |
| PCB Size | 60 × 185 mm |
| Max Detection Range | 3–5 cm (varies by metal surface area) |
| Min Detectable Object Size | >2.5 cm |
| Batteries | Not included |
| Condition | New (unassembled kit) |
Made in Mainland China.
Great for Learners & Makers
Whether you're a student tackling a school project or a hobbyist looking for a rewarding weekend build, this kit delivers real-world soldering practice with a functional, satisfying result. Pair it with other hands-on tools from our store:
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- Air Compressor Pressure Gauge 0-10/0-12/0-25 Bar | DIY Tool
- 18 Pc Basswood Carving Blocks – Whittling Wood Kit for Carvers
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Frequently Asked Questions
Q: Is this metal detector kit suitable for beginners with no soldering experience?
A: This DIY metal detector kit is designed for electronics enthusiasts who have some basic soldering and circuit assembly experience. Complete beginners may find it challenging without guidance. It is ideal for school electronics courses, STEM programs, or hobbyists who have handled a soldering iron before.
Q: What batteries does the assembled metal detector use, and are they included?
A: The assembled metal detector is powered by two button batteries operating at 3–5V. Batteries are not included in the kit and must be purchased separately.
Q: What is the maximum detection range of this handheld metal detector kit?
A: Once assembled, the handheld metal detector can detect metal objects up to approximately 3–5 cm away. The detection range depends on the size of the metal object — larger metal surfaces are detected at greater distances, while smaller objects must be closer to trigger the alarm. The minimum detectable object size is greater than 2.5 cm.
Q: Do I need any special tools to assemble this DIY soldering kit?
A: Yes — you will need a soldering iron, solder wire, and basic hand tools to assemble the kit. These soldering tools are not included and must be sourced separately. Please read all instructions carefully before beginning assembly.