{"product_id":"diy-simple-metal-detector-soldering-kit-built-in-pcb-coil-induction-metal-detect-circuit-module-buzzer-alarm-5cm-max-detect-distance-stem-electronic-soldering-practice-set","title":"DIY Simple Metal Detector Soldering Kit, Built-in PCB Coil Induction Metal Detect Circuit Module, Buzzer Alarm 5cm Max Detect Distance STEM Electronic Soldering Practice Set","description":"\u003ch3\u003eAbout this item\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003ePCB Material: A Grade Double-sided Copper Clad Board, Solder Mask \u0026amp; Tinned Pads for Anti-peeling during repeated soldering; All component values directly printed on PCB silkscreen for easy soldering without extra schematic; Max effective detection distance ≤5cm; Kit contains all loose electronic parts + PCB + assembly guide, unfinished loose parts need user manual soldering.\u003c\/li\u003e\n\u003cli\u003eInduction coil L1\u0026amp;L2 pre-etched on PCB copper trace, no manual winding required; Only a dozen of electronic components onboard, high finished success rate as long as soldered correctly, friendly for entry-level solder learners.\u003c\/li\u003e\n\u003cli\u003eEquipped with adjustable potentiometer to set trigger threshold: tune the pot to stop buzzer sound when no metal nearby; buzzer will sound alarm once PCB antenna closes to metal within 5cm, stop sounding after moving metal away; easy parameter calibration per operation guide.\u003c\/li\u003e\n\u003cli\u003eCore for physics \u0026amp; electronic technology classroom teaching, helps learners understand electromagnetic induction principle; Practical for small security spot check, game lottery metal check; The circuit principle can be extended to develop proximity switch, object counting, position detection experiment for industrial design learning.\u003c\/li\u003e\n\u003cli\u003eImportant Notice: This item is an educational DIY soldering training kit only, designed for learning circuit principle \u0026amp; soldering skill, NOT professional treasure hunting detector, limited 5cm detection range, can’t be used for underground metal prospecting.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOverview\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Aueabc\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Source:\u003c\/strong\u003e Battery Powered\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRecommended Uses For Product:\u003c\/strong\u003e Metal Detection\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Items:\u003c\/strong\u003e 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Aueabc\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Aueabc","offers":[{"title":"Default Title","offer_id":67577028870364,"sku":"B0H3VFHLZQ","price":11.6,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0837\/0913\/3020\/files\/418PRbjN9vL.jpg?v=1790470740","url":"https:\/\/stemora.us\/products\/diy-simple-metal-detector-soldering-kit-built-in-pcb-coil-induction-metal-detect-circuit-module-buzzer-alarm-5cm-max-detect-distance-stem-electronic-soldering-practice-set","provider":"Stemora","version":"1.0","type":"link"}