{"product_id":"heart-shaped-rgb-led","title":"Colorful Heart-Shaped LED","description":"\u003cp\u003eA charming beginner soldering project that makes a great gift — solder together this \u003cstrong\u003eheart-shaped LED kit\u003c\/strong\u003e and watch 18 colourful LEDs flash in a rotating clockwise pattern, driven by a classic transistor oscillator circuit.\u003c\/p\u003e\n\n\u003cp\u003eIt's a satisfying build that teaches real electronics fundamentals: transistor switching, capacitor charging, and LED sequencing — all in a visually rewarding package.\u003c\/p\u003e\n\n\u003ch3\u003eHow it works\u003c\/h3\u003e\n\u003cp\u003eThree transistors (Q1, Q2, Q3) take turns switching on, each driving a group of 6 LEDs arranged in the heart pattern. Capacitors control the timing between each group, creating a continuous rotating flash effect. At any moment, two of the three groups are lit — giving the heart a lively, animated glow.\u003c\/p\u003e\n\n\u003ch3\u003eSpecs\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eLEDs: 18 (3 groups of 6, cross-arranged in heart pattern)\u003c\/li\u003e\n\u003cli\u003eOperating Voltage: 5V USB\u003c\/li\u003e\n\u003cli\u003eCircuit: Transistor oscillator (no microcontroller needed)\u003c\/li\u003e\n\u003cli\u003ePCB Size: 78 × 83mm\u003c\/li\u003e\n\u003cli\u003eAssembly: DIY soldering required\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eRelated products\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eNew to soldering? Warm up with the \u003ca href=\"https:\/\/www.tinkertailor.ca\/products\/soldering-practice-board-1\"\u003eSoldering Practice Board\u003c\/a\u003e first.\u003c\/li\u003e\n\u003cli\u003eReady for your next kit? Try the \u003ca href=\"https:\/\/www.tinkertailor.ca\/products\/colorful-voice-control-rotating-led-light-kit-1\"\u003eColorful Voice Control Rotating LED Light Kit\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Tinker Tailor","offers":[{"title":"Default Title","offer_id":50076292350185,"sku":"HEART-SHAPE-PROTOTYPING","price":16.45,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0790\/8006\/3209\/files\/heartKit.jpg?v=1780599401","url":"https:\/\/www.tinkertailor.ca\/products\/heart-shaped-rgb-led","provider":"Tinker Tailor","version":"1.0","type":"link"}