{"product_id":"led-calculator-diy-kit-51-microcontroller-soldering-practice","title":"LED Calculator DIY Kit – 51 Microcontroller Soldering Practice","description":"\n\u003ch2\u003eLOTHYE LED Digital Calculator DIY Electronic Kit – 51 Microcontroller Soldering Practice\u003c\/h2\u003e\n\n\u003cp\u003eBuild your own fully functional LED calculator from scratch! This hands-on DIY electronic kit is designed for electronics enthusiasts, students, and hobbyists who want to develop real-world circuit assembly and soldering skills. Powered by an STC8G1K17 + TM1638 chip combo and housed in a sleek PS transparent plastic shell, this kit delivers a rewarding build experience and a genuinely useful finished product.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003e⚠️ Please Note:\u003c\/strong\u003e This kit is intended for buyers with prior circuit assembly experience. We guarantee all components are in good condition before shipment, but successful assembly depends on the builder's skill level. Please read all instructions carefully before beginning. \u003cstrong\u003eBatteries are NOT included.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cem\u003eMade in Mainland China.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMulti-Function Calculator:\u003c\/strong\u003e Supports addition, subtraction, multiplication, division, square root, decimal-to-hexadecimal conversion, hexadecimal-to-decimal conversion, five-ring resistance conversion, and four-ring resistance conversion.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e8-Digit LED Display:\u003c\/strong\u003e 7-segment, 8-digit LED digital tube display — available in red, green, or blue display styles.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e51 Microcontroller Platform:\u003c\/strong\u003e Built around the STC8G1K17 MCU with TM1638 display driver — ideal for learning embedded systems and circuit design.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompact \u0026amp; Portable:\u003c\/strong\u003e Dimensions: 121mm (L) × 73mm (W) × 28mm (H) \/ 16mm thin profile.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLow Power:\u003c\/strong\u003e Powered by 2× AAA (No. 7) batteries (3V total) — batteries not included.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTransparent Shell:\u003c\/strong\u003e PS transparent plastic enclosure lets you see the internal PCB — great for learning and display.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePerfect for Training:\u003c\/strong\u003e Ideal for school electronics labs, soldering practice, STEM education, and DIY hobbyists.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLOTHYE\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eChip\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSTC8G1K17 + TM1638\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDisplay\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e8-digit LED digital tube (7-segment)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDisplay Colors\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRed \/ Green \/ Blue\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower Supply\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2× AAA (No. 7) batteries, 3V (not included)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eShell Material\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePS transparent plastic\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e121mm × 73mm × 28mm (16mm thin)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCondition\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNew\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOrigin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMainland China\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eWhat's in the Box?\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eAll electronic components for the calculator kit (PCB, chips, resistors, capacitors, buttons, LED tube, shell)\u003c\/li\u003e\n  \u003cli\u003e\u003cem\u003eBatteries NOT included\u003c\/em\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eYou Might Also Like\u003c\/h3\u003e\n\u003cp\u003eLooking for more hands-on DIY and maker tools? Check out these related products:\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\/hand-power-tools\" target=\"_blank\" rel=\"noopener\"\u003eOSHA guidance on hand and power tools\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: Is this LED calculator kit suitable for beginners with no soldering experience?\u003c\/h4\u003e\n\u003cp\u003eA: This DIY microcontroller calculator kit is best suited for individuals who already have some experience with circuit assembly and soldering. While it is a fantastic learning tool for electronics students and hobbyists, complete beginners may find the build challenging. It is strongly recommended to read all instructions thoroughly and practice basic soldering techniques before starting.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What batteries does the LED digital tube calculator kit require?\u003c\/h4\u003e\n\u003cp\u003eA: The kit is powered by 2× AAA (No. 7) batteries providing a total of 3V. Please note that batteries are NOT included in the package and must be purchased separately.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What functions does the finished microcontroller calculator support?\u003c\/h4\u003e\n\u003cp\u003eA: Once assembled, the calculator supports a wide range of functions including addition, subtraction, multiplication, division, square root calculation, decimal-to-hexadecimal conversion, hexadecimal-to-decimal conversion, five-ring resistance color code conversion, and four-ring resistance color code conversion — making it a highly practical tool for electronics students and engineers.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Can I choose the LED display color for this DIY calculator kit?\u003c\/h4\u003e\n\u003cp\u003eA: Yes! This kit is available in three LED display color options: red, green, and blue. Please select your preferred color at the time of purchase.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"Is this LED calculator kit suitable for beginners with no soldering experience?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This DIY microcontroller calculator kit is best suited for individuals who already have some experience with circuit assembly and soldering. While it is a fantastic learning tool for electronics students and hobbyists, complete beginners may find the build challenging. 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