{"product_id":"kit-water-tank-level-monitor-kit-with-bbc-microbit-plus-ultrasonic","title":"Water Tank Level Monitor Kit with BBC Micro:bit + Ultrasonic","description":"\u003ch1\u003eBuild a Smart Water Tank with Automatic Lid and Level Monitor — BBC Micro:bit \u0026amp; Ultrasonic Kit\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 8-10 years\u003c\/span\u003e\n  \u003cspan\u003e\u003cstrong\u003eSkill:\u003c\/strong\u003e Touchless Automation \u0026amp; Level Sensing\u003c\/span\u003e\n\u003c\/div\u003e\n\n\u003cp\u003eImagine a water tank that shows you exactly how much water is left and opens its lid the moment you wave your hand — no switches, no touching dirty surfaces. With this BBC Micro:bit kit, your young inventor will assemble a working model that combines distance sensing, servo motion, and real-time display feedback on a mini breadboard. It’s a practical intro to smart home ideas, perfectly sized for science fairs, tinkering labs, or a weekend build that actually does something useful.\u003c\/p\u003e\n\n\u003ch2\u003eWhat You'll Build\u003c\/h2\u003e\n\u003cp\u003eYou’ll wire the HC-SR04 ultrasonic sensor to face down into a model tank (a small box or jar), while the servo motor attaches to a cardboard lid. The Micro:bit’s LED matrix displays tank status — empty, half, or full — based on the distance the sensor measures to the water surface. When your hand comes within a few centimetres of the sensor, the code instantly drives the servo to flip the lid open, then closes it after a set delay. It’s a complete, hands‑free water dispensing point powered by a little logic you can tweak and understand.\u003c\/p\u003e\n\n\u003ch2\u003eWhat You'll Learn\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eProgramming a Micro:bit to read an ultrasonic distance sensor and control a servo motor\u003c\/li\u003e\n  \u003cli\u003eCalibrating an HC-SR04 sensor for reliable water level detection (empty, mid, full)\u003c\/li\u003e\n  \u003cli\u003eUsing servo angles to create mechanical lid movement triggered by proximity\u003c\/li\u003e\n  \u003cli\u003eBuilding a complete feedback system that shows action (LED display) and physical output together\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eKit Contents\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eComponent\u003c\/th\u003e\n\u003cth\u003eQuantity\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eBBC Micro:bit v2\u003c\/td\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eHC-SR04 Ultrasonic\u003c\/td\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eSG90 Servo\u003c\/td\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eHalf Breadboard\u003c\/td\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eCrocodile Clips\u003c\/td\u003e\n\u003ctd\u003e6\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMicroUSB Cable\u003c\/td\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eAA Battery Holder\u003c\/td\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eAA Batteries\u003c\/td\u003e\n\u003ctd\u003e2\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eM-M Wires\u003c\/td\u003e\n\u003ctd\u003e15\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eWhy Buy This Kit Instead of Sourcing Parts Separately\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eFactor\u003c\/th\u003e\n\u003cth\u003eSourcing Separately\u003c\/th\u003e\n\u003cth\u003eCompoden Kit\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eCompatibility checks\u003c\/td\u003e\n\u003ctd\u003eYou verify every part\u003c\/td\u003e\n\u003ctd\u003ePre-tested as a system\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eBuild support\u003c\/td\u003e\n\u003ctd\u003eForums and scattered tutorials\u003c\/td\u003e\n\u003ctd\u003eAI companion trained on this exact project\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eTime to first working build\u003c\/td\u003e\n\u003ctd\u003eDays of debugging\u003c\/td\u003e\n\u003ctd\u003eHours, with step-by-step guidance\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eShipping coordination\u003c\/td\u003e\n\u003ctd\u003eMultiple sellers, multiple delays\u003c\/td\u003e\n\u003ctd\u003eOne shipment from Bengaluru in 3-5 days\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eWho This Kit Is For\u003c\/h2\u003e\n\u003cp\u003eYoung explorers aged 8-10 who want a project that feels like a real appliance, not just blinking lights. It’s ideal for CBSE Class 5-8 science projects, ATL Tinkering Lab introductions, or a parent-child build on a rainy afternoon. The automatic lid and level display mirror concepts used in actual water management systems, giving kids a taste of IoT logic while staying firmly in the beginner’s comfort zone.\u003c\/p\u003e\n\n\u003ch2\u003eBuilt and Backed by Compoden\u003c\/h2\u003e\n\u003cp\u003eEvery Compoden kit ships with an AI build companion trained on this exact project — accessible via a QR code on the box, with WhatsApp and email backup. We've spent 10 years building projects for makers, schools, and institutions across India. If a part fails because of a manufacturing defect, replace it free within 7 days.\u003c\/p\u003e\n\n\u003cdetails\u003e\u003csummary\u003eWhat if I get stuck during the build?\u003c\/summary\u003e\u003cp\u003eOpen the kit’s QR code to talk to our AI companion trained on this exact project. It understands every wire and line of code. You can also send a photo via WhatsApp — our Bengaluru team replies within hours.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eCan I really monitor water level and open a lid with this?\u003c\/summary\u003e\u003cp\u003eYes, on a model scale. You’ll set three distance thresholds (empty, half, full) for the ultrasonic sensor. The code shows status on the Micro:bit’s LEDs and triggers the servo to swing a lid open when your hand crosses the sensor’s detection zone.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eDo we need any coding experience to finish the project?\u003c\/summary\u003e\u003cp\u003eNone at all. The AI companion provides a ready-to-upload MakeCode program and explains every block. Kids can then tinker with distances or servo angles to personalise the behaviour.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eCan I change the hand detection trigger to something else?\u003c\/summary\u003e\u003cp\u003eAbsolutely. Since it’s just a distance threshold in the code, you can modify it to react to any object (a mug, a pet) at a chosen range. The AI companion can walk you through that tweak.\u003c\/p\u003e\u003c\/details\u003e\n\n\u003cdiv class=\"kit-description\"\u003e\n  \u003cp\u003eTank Monitoring — Ultrasonic sensor detects when a hand is near and micro:bit signals a servo to open the lid automatically.\u003c\/p\u003e\n  \u003ch4\u003eWhat's in this kit\u003c\/h4\u003e\n  \u003cul\u003e\n    \u003cli\u003e\u003ca href=\"\/products\/bbc-microbit-v2-compact-arm-board-with-led-matrix-mic-sensors\"\u003eBBC Micro:bit v2\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"\/products\/hc-sr04-ultrasonic-sensor-module-5v-distance-2cm-400cm\"\u003eHC-SR04 Ultrasonic\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"\/products\/sg90-servo-motor-9g-micro-servo-for-robotics-arduino\"\u003eSG90 Servo\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"\/products\/breadboard-standard-bundle-830400-tie-points-for-prototyping\"\u003eHalf Breadboard\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\n\u003ca href=\"\/products\/crocodile-clips-10-pack-50mm-pvc-sleeve-5a-rating\"\u003eCrocodile Clips\u003c\/a\u003e x6\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"\/products\/microusb-cable-1m-charging-data-cord-for-arduino-android\"\u003eMicroUSB Cable\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"\/products\/max1452aaet-sensor-signal-conditioner-ic-ssop-16-smd-0194\"\u003eAA Battery Holder\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\n\u003ca href=\"\/products\/max1452aaet-sensor-signal-conditioner-ic-ssop-16-smd-0194\"\u003eAA Batteries\u003c\/a\u003e x2\u003c\/li\u003e\n    \u003cli\u003eM-M Wires x15\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 Water Tank Level Monitor Kit with BBC Micro:bit + Ultrasonic?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The Water Tank Level Monitor Kit with BBC Micro:bit + Ultrasonic includes all components needed: BBC Micro:bit v2, HC-SR04 Ultrasonic, SG90 Servo, Half Breadboard, Crocodile Clips 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 Water Tank Level Monitor Kit with BBC Micro:bit + Ultrasonic?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"This kit is designed for Beginner level makers, suitable for ages 8-10. Tank Monitoring — Ultrasonic sensor detects when a hand is near and micro:bit signals a servo to open the lid automatically. Estimated build time is 2-3 hrs.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Can I buy the Water Tank Level Monitor Kit with BBC Micro:bit + Ultrasonic online in India?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes, the Water Tank Level Monitor Kit with BBC Micro:bit + Ultrasonic 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\": \"Water Tank Level Monitor Kit with BBC Micro:bit + Ultrasonic\",\n  \"description\": \"Tank Monitoring — Ultrasonic sensor detects when a hand is near and micro:bit signals a servo to open the lid automatically.\",\n  \"sku\": \"CDN-KIT-4290\",\n  \"brand\": {\"@type\": \"Brand\", \"name\": \"Compoden\"},\n  \"offers\": {\n    \"@type\": \"Offer\",\n    \"url\": \"https:\/\/compoden.in\/products\/kit-water-tank-level-monitor-kit-with-bbc-microbit-plus-ultrasonic\",\n    \"priceCurrency\": \"INR\",\n    \"price\": \"3565\",\n    \"availability\": \"https:\/\/schema.org\/InStock\",\n    \"seller\": {\"@type\": \"Organization\", \"name\": \"Compoden\"}\n  },\n  \"category\": \"Kids Starter STEM\"\n}\n\u003c\/script\u003e","brand":"Compoden","offers":[{"title":"Default Title","offer_id":53463953473901,"sku":"CDN-KIT-4290","price":4140.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/3997\/5533\/files\/kit-water-tank-level-monitor-kit-with-bbc-microbit-plus-ultrasonic.png?v=1781949894","url":"https:\/\/compoden.com\/products\/kit-water-tank-level-monitor-kit-with-bbc-microbit-plus-ultrasonic","provider":"Compoden","version":"1.0","type":"link"}