{"product_id":"kit-ble-proximity-badge-v12","title":"BLE Proximity Badge Variant 12 Kit with ESP32 + LED","description":"\u003ch1\u003eBLE Proximity Badge Kit with ESP32 – Build a Wireless Attendance Logger in 2 Hours\u003c\/h1\u003e\n\n\u003cp class=\"value-summary\"\u003eEvery part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.\u003c\/p\u003e\n\n\u003cdiv class=\"specs-strip\"\u003e\n  \u003cspan\u003e\u003cstrong\u003eDifficulty:\u003c\/strong\u003e Beginner\u003c\/span\u003e\n  \u003cspan\u003e\u003cstrong\u003eBuild Time:\u003c\/strong\u003e 2-3 hrs\u003c\/span\u003e\n  \u003cspan\u003e\u003cstrong\u003eAge:\u003c\/strong\u003e 5-15\u003c\/span\u003e\n  \u003cspan\u003e\u003cstrong\u003eSkill:\u003c\/strong\u003e Bluetooth Low Energy programming\u003c\/span\u003e\n\u003c\/div\u003e\n\n\u003cp\u003eThis kit turns two ESP32 boards into a real-world BLE proximity badge system. One board becomes a compact beacon you can carry in a pocket or wear on a lanyard, advertising a customizable UUID. The second board acts as a base station that lights up an LED the moment it detects the beacon within range. It’s a brilliant way to demonstrate contact tracing, automated attendance, or child proximity alerts while learning core IoT concepts.\u003c\/p\u003e\n\n\u003ch2\u003eWhat You'll Build\u003c\/h2\u003e\n\u003cp\u003eYou’ll wire up two independent circuits on breadboards: a battery-powered beacon (simulated with USB power) that constantly broadcasts its presence, and a receiver that scans for that exact signal. When the beacon comes within a few meters, the receiver’s LED blinks, proving the connection\n\n\u003c\/p\u003e\u003cdiv class=\"kit-description\"\u003e\n  \u003cp\u003eESP32 advertises a BLE beacon with custom UUID. Second device logs proximity when in range.\u003c\/p\u003e\n  \u003ch4\u003eWhat's in this kit\u003c\/h4\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003ca href=\"\/products\/esp32-30-pin-development-board-cp2102-wifi-bluetooth\"\u003eESP32 Dev Board\u003c\/a\u003e x2\u003c\/li\u003e\n    \u003cli\u003e\n\u003ca href=\"\/products\/inductive-proximity-sensor-5mm-npn-no-ceyone-compoden\"\u003e5mm LED\u003c\/a\u003e x2\u003c\/li\u003e\n    \u003cli\u003e\n\u003ca href=\"\/products\/resistor-variety-pack-100-pcs-10-values-14w-carbon-film\"\u003e220Ω Resistors\u003c\/a\u003e x5\u003c\/li\u003e\n    \u003cli\u003e\n\u003ca href=\"\/products\/breadboard-standard-bundle-830400-tie-points-for-prototyping\"\u003e400-pt Breadboard\u003c\/a\u003e x2\u003c\/li\u003e\n    \u003cli\u003eM-M Wires x15\u003c\/li\u003e\n    \u003cli\u003e\n\u003ca href=\"\/products\/microusb-cable-1m-charging-data-cord-for-arduino-android\"\u003eMicro USB Cable\u003c\/a\u003e x2\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/div\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What is included in the BLE Proximity Badge Variant 12 Kit with ESP32 + LED?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The BLE Proximity Badge Variant 12 Kit with ESP32 + LED includes all components needed: ESP32 Dev Board, 5mm LED, 220Ω Resistors, 400-pt Breadboard, M-M Wires and more. Everything is pre-tested for compatibility and shipped from Bengaluru, India.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What skill level is required for the BLE Proximity Badge Variant 12 Kit with ESP32 + LED?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"This kit is designed for Beginner level makers, suitable for ages 5-15. ESP32 advertises a BLE beacon with custom UUID. Second device logs proximity when in range. Estimated build time is 2-3 hrs.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Can I buy the BLE Proximity Badge Variant 12 Kit with ESP32 + LED online in India?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes, the BLE Proximity Badge Variant 12 Kit with ESP32 + LED is available online at Compoden (compoden.in), India's AI-powered electronics and robotics store. Ships from Bengaluru in 1-5 business days across India.\"\n      }\n    }\n  ]\n}\n\u003c\/script\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"Product\",\n  \"name\": \"BLE Proximity Badge Variant 12 Kit with ESP32 + LED\",\n  \"description\": \"ESP32 advertises a BLE beacon with custom UUID. Second device logs proximity when in range.\",\n  \"sku\": \"CDN-KIT-0577\",\n  \"brand\": {\"@type\": \"Brand\", \"name\": \"Compoden\"},\n  \"offers\": {\n    \"@type\": \"Offer\",\n    \"url\": \"https:\/\/compoden.in\/products\/kit-ble-proximity-badge-v12\",\n    \"priceCurrency\": \"INR\",\n    \"price\": \"1840\",\n    \"availability\": \"https:\/\/schema.org\/InStock\",\n    \"seller\": {\"@type\": \"Organization\", \"name\": \"Compoden\"}\n  },\n  \"category\": \"IoT \u0026 Connectivity\"\n}\n\u003c\/script\u003e","brand":"Compoden","offers":[{"title":"Default Title","offer_id":53455746236781,"sku":"CDN-KIT-0577","price":2040.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/3997\/5533\/files\/kit-ble-proximity-badge-v12.png?v=1782285777","url":"https:\/\/compoden.com\/products\/kit-ble-proximity-badge-v12","provider":"Compoden","version":"1.0","type":"link"}