{"product_id":"lie-detector-kit-future-fa940-electronic-diy","title":"Lie Detector Kit Future FA940 Electronic Game Funny Unassembled DIY","description":"\u003cdiv style=\"max-width: 1200px; font-family: Verdana, Arial, Helvetica, sans-serif; margin: auto;\"\u003e\n\n\u003ch2 style=\"color: red; text-align: center;\"\u003e\u003cb\u003eLie Detector Kit by Future Kit: an engaging DIY electronic science project powered by 9VDC.\u003c\/b\u003e\u003c\/h2\u003e\n\u003cbr\u003e\u003cbr\u003e\n\n\u003ch1 style=\"color: #2b76a4;\"\u003e\u003cb\u003eItem Specifics\u003c\/b\u003e\u003c\/h1\u003e\n\u003cdiv style=\"font-size: 1.5em;\"\u003e\n• \u003cb\u003eModel Number:\u003c\/b\u003e FA940, FK940\u003cbr\u003e\n• \u003cb\u003eProduct Type:\u003c\/b\u003e Electronic Educational Kit\u003cbr\u003e\n• \u003cb\u003eAssembly Status:\u003c\/b\u003e Pre-assembled circuit board module\u003cbr\u003e\n• \u003cb\u003ePower Supply:\u003c\/b\u003e 9V DC Battery (Not included)\u003cbr\u003e\n• \u003cb\u003eCurrent Consumption:\u003c\/b\u003e Max 32mA\u003cbr\u003e\n• \u003cb\u003eDisplay Type:\u003c\/b\u003e 4 Color LEDs (1 Green, 2 Yellow, 1 Red)\u003cbr\u003e\n• \u003cb\u003eSensor Interface:\u003c\/b\u003e Dual Contact Touch Sensor Plate\u003cbr\u003e\n• \u003cb\u003eSensitivity Control:\u003c\/b\u003e Onboard VR100K Trimmer Potentiometer\u003cbr\u003e\n• \u003cb\u003eSize:\u003c\/b\u003e Main board approx. 44.5 x 49.3 mm, Sensor board approx. 21.3 x 41.7 mm\u003cbr\u003e\n• \u003cb\u003eRecommended Enclosure:\u003c\/b\u003e Future Box FB03\u003cbr\u003e\n• \u003cb\u003eCountry of Origin:\u003c\/b\u003e Thailand\u003cbr\u003e\u003cbr\u003e\n\u003c\/div\u003e\n\n\u003ch1 style=\"color: #2b76a4;\"\u003e\u003cb\u003eProduct Description\u003c\/b\u003e\u003c\/h1\u003e\n\u003cdiv style=\"font-size: 2em;\"\u003e\n\u003cp style=\"text-indent: 2em;\"\u003eThe Future Kit FA940 Lie Detector Kit delivers an interactive electronic experience crafted for STEM enthusiasts, students, and hobbyists. Operating on bio-electric skin resistance principles, the circuit detects minute electrical conductivity shifts when fingers contact the dedicated sensor pads. An onboard transistor switching network analyzes incoming signals in real time and translates biometric responses into intuitive visual indicators across four graduated LEDs.\u003c\/p\u003e\n\u003cp style=\"text-indent: 2em;\"\u003eEngineered with quality electronic components, this educational Lie Detector Kit features an integrated calibration trimmer to balance baseline skin resistance across diverse testing environments. Compact and fully portable, it provides an engaging, hands-on demonstration of analog sensor feedback and signal amplification for science fairs, classroom activities, and recreational entertainment.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cbr\u003e\u003cbr\u003e\n\n\u003ch1 style=\"color: #2b76a4;\"\u003e\u003cb\u003eKey Features and Benefits\u003c\/b\u003e\u003c\/h1\u003e\n\u003cdiv style=\"font-size: 1.5em;\"\u003e\n- \u003cb\u003eVisual Feedback Array:\u003c\/b\u003e Four color-coded LEDs provide graduated detection levels from normal to high response.\u003cbr\u003e\n- \u003cb\u003eAdjustable Sensitivity:\u003c\/b\u003e Onboard VR100K potentiometer allows quick baseline calibration for different skin types.\u003cbr\u003e\n- \u003cb\u003eEducational Circuitry:\u003c\/b\u003e Demonstrates multi-stage transistor switching and analog signal amplification.\u003cbr\u003e\n- \u003cb\u003ePortable 9V Operation:\u003c\/b\u003e Functions on a standard 9V battery for cord-free tabletop use anywhere.\u003cbr\u003e\n- \u003cb\u003ePractical Learning Experience:\u003c\/b\u003e This Lie Detector Kit makes abstract electronic concepts easy to visualize.\u003cbr\u003e\u003cbr\u003e\n\u003c\/div\u003e\n\n\u003ch1 style=\"color: #2b76a4;\"\u003e\u003cb\u003eKey Materials and Components\u003c\/b\u003e\u003c\/h1\u003e\n\u003cdiv style=\"font-size: 1.5em;\"\u003e\n• \u003cb\u003ePrinted Circuit Boards:\u003c\/b\u003e High quality copper-clad boards for main unit and dual touch sensor.\u003cbr\u003e\n• \u003cb\u003eAmplification Transistors:\u003c\/b\u003e Five C458 NPN silicon transistors for signal processing stages.\u003cbr\u003e\n• \u003cb\u003eSignal Diodes:\u003c\/b\u003e Six fast-switching diodes to establish precise voltage drops.\u003cbr\u003e\n• \u003cb\u003eLED Display:\u003c\/b\u003e Four vibrant LEDs in green, yellow, and red for visual output.\u003cbr\u003e\n• \u003cb\u003eTrimmer Potentiometer:\u003c\/b\u003e Precision VR100K variable resistor for sensitivity tuning.\u003cbr\u003e\n• \u003cb\u003ePassive Network:\u003c\/b\u003e Fixed carbon film resistors and filtering capacitors for circuit stability.\u003cbr\u003e\n• \u003cb\u003eIntegrated Module:\u003c\/b\u003e High grade components combine seamlessly in this Lie Detector Kit project.\u003cbr\u003e\u003cbr\u003e\n\u003c\/div\u003e\n\n\u003ch1 style=\"color: #2b76a4;\"\u003e\u003cb\u003eHow to Use\u003c\/b\u003e\u003c\/h1\u003e\n\u003cdiv style=\"font-size: 1.5em;\"\u003e\n1. Connect a 9V DC battery clip to the positive and ground terminals observing correct polarity.\u003cbr\u003e\n2. Turn the VR100K trimmer until only the green LED remains faintly lit or off at rest.\u003cbr\u003e\n3. Place two fingers firmly across the dual conductive touch sensor pads.\u003cbr\u003e\n4. Ask questions and watch the yellow and red LEDs activate as conductivity changes.\u003cbr\u003e\n5. Readjust the VR100K trimmer whenever testing different participants or room conditions.\u003cbr\u003e\u003cbr\u003e\n\u003c\/div\u003e\n\n\u003ch1 style=\"color: #2b76a4;\"\u003e\u003cb\u003eMaterials and Components List\u003c\/b\u003e\u003c\/h1\u003e\n\u003cdiv style=\"font-size: 1.5em;\"\u003e\n\u003cp style=\"text-indent: 2em;\"\u003eFR-2 Copper Clad Printed Circuit Board, Dual Touch Sensor Plate, C458 NPN Transistors, Switching Diodes, 5mm Green LED, 5mm Yellow LEDs, 5mm Red LED, VR100K Trimmer Potentiometer, Carbon Film Resistors, Ceramic Disc Capacitor, Radial Electrolytic Capacitor, Connecting Leads, RoHS Compliant Solder Joints.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cbr\u003e\u003cbr\u003e\n\n\u003c\/div\u003e","brand":"Future Kit","offers":[{"title":"Default Title","offer_id":50056340570267,"sku":"FK-FA940-KIT","price":7.59,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0704\/0437\/4683\/files\/LieDetectorKitGameFunnyUnassembledFutureElectronicFA940_3_300ece29-e763-44a7-ba94-58c788c5cc17.webp?v=1793783103","url":"https:\/\/www.megaqualitystore.com\/products\/lie-detector-kit-future-fa940-electronic-diy","provider":"Megaquality","version":"1.0","type":"link"}