{"product_id":"diy-handheld-metal-detector-kit-soldering-assembly-training","title":"DIY Metal Detector Kit – Soldering Assembly STEM Training","description":"\n\u003ch2\u003eLOTHYE DIY Handheld Metal Detector Electronic Soldering Kit\u003c\/h2\u003e\n\u003cp\u003eBuild 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.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003e⚠️ Important:\u003c\/strong\u003e This kit ships as individual loose components that require soldering to assemble. Soldering tools and batteries are \u003cem\u003enot\u003c\/em\u003e included. Basic circuit and soldering experience is recommended. Component colors may vary by batch but do not affect functionality.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDual Alarm System:\u003c\/strong\u003e Built-in buzzer and flashing red LED indicator activate simultaneously when metal is detected.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAdjustable Sensitivity:\u003c\/strong\u003e Onboard potentiometer lets you fine-tune the detection threshold to suit your needs.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompact \u0026amp; Lightweight:\u003c\/strong\u003e PCB dimensions of 60 × 185 mm make this a portable, easy-to-carry device once assembled.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDetection Range:\u003c\/strong\u003e Detects metal objects up to 3–5 cm away; larger metal surfaces are detected at greater distances.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLow Power Consumption:\u003c\/strong\u003e Runs on two button batteries (3–5V); working current ~23mA during alarm, ~3.7mA in standby.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOne-Click Operation:\u003c\/strong\u003e Simple, straightforward to use after assembly — ideal for beginners and classroom projects.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVersatile Uses:\u003c\/strong\u003e Gaming and entertainment, basic safety checks, STEM education, and electronics training.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWorking Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3–5V (two button batteries)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWorking Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e~23mA (alarm active)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eStandby Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e~3.7mA\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePCB Size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e60 × 185 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMax Detection Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3–5 cm (varies by metal surface area)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMin Detectable Object Size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u0026gt;2.5 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBatteries\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNot included\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCondition\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNew (unassembled kit)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003cp\u003eMade in Mainland China.\u003c\/p\u003e\n\n\u003ch3\u003eGreat for Learners \u0026amp; Makers\u003c\/h3\u003e\n\u003cp\u003eWhether 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:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/electromagnetic-induction-tester-coil-motherboard-fault-detector\"\u003eElectromagnetic Induction Tester – Coil \u0026amp; Circuit Fault Detector\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/air-compressor-pressure-gauge-0-10-0-12-0-25-bar-hydraulic-diy\"\u003eAir Compressor Pressure Gauge 0-10\/0-12\/0-25 Bar | DIY Tool\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/18-pc-basswood-carving-blocks-whittling-wood-kit\"\u003e18 Pc Basswood Carving Blocks – Whittling Wood Kit for Carvers\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\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 metal detector kit suitable for beginners with no soldering experience?\u003c\/h4\u003e\n\u003cp\u003eA: 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.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What batteries does the assembled metal detector use, and are they included?\u003c\/h4\u003e\n\u003cp\u003eA: The assembled metal detector is powered by two button batteries operating at 3–5V. Batteries are \u003cstrong\u003enot included\u003c\/strong\u003e in the kit and must be purchased separately.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What is the maximum detection range of this handheld metal detector kit?\u003c\/h4\u003e\n\u003cp\u003eA: 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.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Do I need any special tools to assemble this DIY soldering kit?\u003c\/h4\u003e\n\u003cp\u003eA: 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.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"Is this metal detector kit suitable for beginners with no soldering experience?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"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. 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