{"product_id":"diy-metal-detector-electronic-kit-soldering-learning","title":"DC 3-5V DIY Metal Detector Kit – Soldering Electronics Project","description":"\n\u003ch2\u003eDC 3-5V Simple Metal Detector DIY Electronic Kit\u003c\/h2\u003e\n\u003cp\u003eBuild your own working metal detector from scratch with this hands-on DIY electronic kit! Perfect for students, hobbyists, and electronics enthusiasts looking to sharpen their soldering skills while constructing a genuinely useful device. This compact, high-sensitivity metal detector kit teaches fundamental electronics assembly concepts through a fun, practical project. Made in Mainland China.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSimple Assembly:\u003c\/strong\u003e Beginner-friendly design with clearly labeled PCB and straightforward component placement — great for learning or teaching electronics.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompact \u0026amp; Portable:\u003c\/strong\u003e Sleek, small form factor (14.9 × 2.2 cm) that's easy to carry and handle.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh Sensitivity:\u003c\/strong\u003e Accurately detects nearby metal objects, making it ideal for game entertainment, security inspection demonstrations, and educational experiments.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVersatile Applications:\u003c\/strong\u003e Use it for hobby projects, STEM education, technology training, or explore real-world use cases like vehicle detection coil systems and elevator position sensing.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSoldering Practice:\u003c\/strong\u003e A fantastic hands-on kit for learning how to solder through-hole components — a core skill for any electronics maker.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eKit Specifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSupply Voltage:\u003c\/strong\u003e DC 3–5V\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBattery:\u003c\/strong\u003e CR2032 (not included — please prepare separately)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 14.9 × 2.2 cm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Switch \/ Module\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow It Works — Real-World Examples\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eVehicle Detection:\u003c\/strong\u003e By burying a 1-meter diameter coil under a road surface at 5–10 cm depth, the metal detector principle enables stable, accurate detection of vehicles passing overhead — highly valuable for traffic monitoring and parking management systems.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eElevator Position Sensing:\u003c\/strong\u003e Instead of unreliable mechanical switches or dust-prone photocouplers, a metal detector module can reliably determine whether an elevator has reached its stop position — demonstrating the practical value of this technology in real industrial applications.\u003c\/p\u003e\n\n\u003ch3\u003ePackage Includes\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003ePCB Board × 1\u003c\/li\u003e\n  \u003cli\u003e3V Buzzer × 1\u003c\/li\u003e\n  \u003cli\u003e100UF 25V Electrolytic Capacitor × 1\u003c\/li\u003e\n  \u003cli\u003e104 Ceramic Capacitor × 2\u003c\/li\u003e\n  \u003cli\u003e222 Polyester Capacitor × 2\u003c\/li\u003e\n  \u003cli\u003e220K 0.25W Resistor × 1\u003c\/li\u003e\n  \u003cli\u003e2.2K 0.25W Resistor × 1\u003c\/li\u003e\n  \u003cli\u003e100 Ohm Blue \u0026amp; White Potentiometer × 1\u003c\/li\u003e\n  \u003cli\u003e9018 Triode × 1\u003c\/li\u003e\n  \u003cli\u003e9015 Triode × 1\u003c\/li\u003e\n  \u003cli\u003e9012 Triode × 1\u003c\/li\u003e\n  \u003cli\u003e12D07 Toggle Switch × 1\u003c\/li\u003e\n  \u003cli\u003eCR2032 Battery Holder × 1\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eNote: CR2032 battery is NOT included. Please source one separately before assembly.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.osha.gov\/personal-protective-equipment\" target=\"_blank\" rel=\"noopener\"\u003eOSHA on personal protective equipment\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: Is this DIY metal detector kit suitable for beginners learning to solder?\u003c\/h4\u003e\n\u003cp\u003eA: Yes! The DC 3-5V Simple Metal Detector DIY Kit is specifically designed as a soldering learning and technology training kit. The PCB is clearly labeled, the component count is manageable, and the assembly steps are straightforward — making it an excellent first or early project for anyone new to electronics soldering.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What battery does the DIY metal detector kit require, and is it included?\u003c\/h4\u003e\n\u003cp\u003eA: The kit uses a CR2032 coin cell battery (3V). The battery is NOT included in the package — you will need to purchase one separately before you can operate the completed detector. A battery holder is included in the kit.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What can I use the completed metal detector for?\u003c\/h4\u003e\n\u003cp\u003eA: Once assembled, the metal detector can be used for game entertainment, informal security inspection demonstrations, STEM education projects, technology training exercises, and exploring electronics concepts such as oscillator-based sensing. The same underlying principle applies to industrial uses like vehicle detection loops and elevator floor-position sensing modules.\u003c\/p\u003e\n\u003c!-- production-packaging-notice --\u003e\n\u003ch3\u003eProduction \u0026amp; Packaging Notice\u003c\/h3\u003e\n\u003cp\u003eTo maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"Is this DIY metal detector kit suitable for beginners learning to solder?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes! The DC 3-5V Simple Metal Detector DIY Kit is specifically designed as a soldering learning and technology training kit. 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