{"product_id":"arduino-nano-senior-alert-kit-pir-led-ring-for-bathroom-safety","title":"Arduino Nano Senior Alert Kit: PIR LED Ring for Bathroom Safety","description":"\u003ch1\u003eArduino Nano Senior Movement Alert Kit - A DIY Toilet Nightlight for Fall Prevention\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 Motion-Activated Lighting Systems\u003c\/span\u003e\n\u003c\/div\u003e\n\n\u003cp\u003eNighttime falls in the bathroom are a leading cause of injury among seniors. This kit lets you build a subtle, motion-activated LED ring that mounts under the toilet rim, illuminating only when it's dark and someone approaches. Within a weekend, you'll create a safety device that helps elderly family members navigate their bathroom without fumbling for switches or being startled by harsh overhead lights.\u003c\/p\u003e\n\n\u003ch2\u003eWhat You'll Build\u003c\/h2\u003e\n\u003cp\u003eA discreet WS2812B 12-LED ring that glows softly for 60 seconds when the PIR sensor detects movement and the LDR confirms low ambient light. Designed to sit out of sight beneath the toilet seat, it offers just enough guidance for safe use without disturbing sleep patterns. The entire circuit runs off a standard 5V supply and fits neatly on a breadboard, ready for a permanent enclosure if desired.\u003c\/p\u003e\n\n\u003ch2\u003eWhat You'll Learn\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eInterfacing an HC-SR501 PIR sensor with Arduino Nano to trigger events on motion detection\u003c\/li\u003e\n  \u003cli\u003eUsing an LDR with a voltage divider to read ambient light levels and enable night-only operation\u003c\/li\u003e\n  \u003cli\u003eControlling an addressable WS2812B LED ring - setting colour, brightness, and duration\u003c\/li\u003e\n  \u003cli\u003eWriting Arduino code that combines sensor inputs with timed output for real-world automation\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\u003eArduino Nano\u003c\/td\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eHC-SR501 PIR\u003c\/td\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eLDR\u003c\/td\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eWS2812B 12-LED Ring\u003c\/td\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e470? Resistors\u003c\/td\u003e\n\u003ctd\u003e5\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e10k? Resistors\u003c\/td\u003e\n\u003ctd\u003e5\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e400-pt Breadboard\u003c\/td\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eM-M Wires\u003c\/td\u003e\n\u003ctd\u003e20\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e5V 1A PSU\u003c\/td\u003e\n\u003ctd\u003e1\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\u003eThis project is ideal for CBSE Class 11-12 students exploring sensor-based electronics, B.Tech ECE\/EEE undergraduates prototyping assistive technologies, and participants in Smart India Hackathon or ATL Tinkering Lab challenges. It also suits makers from IIT\/NIT\/VIT\/BITS who want a practical elderly-care gadget or families looking for a meaningful DIY activity that directly helps ageing relatives. If you have a basic comfort with breadboards and Arduino IDE, you're ready to start.\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\u003eScan the QR code inside the box to launch the AI companion that walks you through wiring, code, and common pitfalls. You can also reach out via WhatsApp for human help within 24 hours.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eCan this be installed permanently in a bathroom?\u003c\/summary\u003e\u003cp\u003eThe LED ring is not waterproof out of the box, but you can encase it in a clear silicone sleeve or 3D-printed housing. The electronics should be placed in a dry enclosure, with only the sensor and LED extending into the bathroom space.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eHow long does the light stay on, and can I change it?\u003c\/summary\u003e\u003cp\u003eThe default code keeps the LED ring on for 60 seconds after motion is detected. You can easily modify this duration in the Arduino sketch to suit your preference, from a few seconds to several minutes.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eDoes it work only at night?\u003c\/summary\u003e\u003cp\u003eYes. The LDR constantly reads the ambient light level; the LED ring activates only when the environment is dark, preventing unnecessary triggers during the day.\u003c\/p\u003e\u003c\/details\u003e\n\n\u003cdiv class=\"kit-description\"\u003e\n  \u003cp\u003eElderly Care - PIR triggers WS2812B LED ring under toilet rim for 60 seconds at night when motion detected.\u003c\/p\u003e\n  \u003ch4\u003eWhat's in this kit\u003c\/h4\u003e\n  \u003cul\u003e\n    \u003cli\u003e\u003ca href=\"\/products\/nano-r3-ch340-development-board-arduino-compatible-no-cable\"\u003eArduino Nano\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"\/products\/hc-sr501-pir-motion-sensor-ir-module-combo-for-arduino\"\u003eHC-SR501 PIR\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"\/products\/ldr-sensor-5mm-light-dependent-resistor-for-arduino-compoden\"\u003eLDR\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"\/products\/ws2812b-5050-rgb-led-ring-241-leds-9-rings-addressable\"\u003eWS2812B 12-LED Ring\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e470? Resistors x5\u003c\/li\u003e\n    \u003cli\u003e\n\u003ca href=\"\/products\/resistor-variety-pack-100-pcs-10-values-14w-carbon-film\"\u003e10k? Resistors\u003c\/a\u003e x5\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"\/products\/breadboard-standard-bundle-830400-tie-points-for-prototyping\"\u003e400-pt Breadboard\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003eM-M Wires x20\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"\/products\/4-channel-relay-board-for-esp32-30-pin-5v-control\"\u003e5V 1A PSU\u003c\/a\u003e\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 Senior Movement Alert Kit with Arduino Nano + LDR?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The Senior Movement Alert Kit with Arduino Nano + LDR includes all components needed: Arduino Nano, HC-SR501 PIR, LDR, WS2812B 12-LED Ring, 470? Resistors 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 Senior Movement Alert Kit with Arduino Nano + LDR?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"This kit is designed for Beginner level makers, suitable for ages 5-15. Elderly Care - PIR triggers WS2812B LED ring under toilet rim for 60 seconds at night when motion detected. Estimated build time is 2-3 hrs.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Can I buy the Senior Movement Alert Kit with Arduino Nano + LDR online in India?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes, the Senior Movement Alert Kit with Arduino Nano + LDR 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\": \"Senior Movement Alert Kit with Arduino Nano + LDR\",\n  \"description\": \"Elderly Care - PIR triggers WS2812B LED ring under toilet rim for 60 seconds at night when motion detected.\",\n  \"sku\": \"CDN-KIT-3673\",\n  \"brand\": {\"@type\": \"Brand\", \"name\": \"Compoden\"},\n  \"offers\": {\n    \"@type\": \"Offer\",\n    \"url\": \"https:\/\/compoden.in\/products\/kit-senior-movement-alert-kit-with-arduino-nano-plus-ldr\",\n    \"priceCurrency\": \"INR\",\n    \"price\": \"4625\",\n    \"availability\": \"https:\/\/schema.org\/InStock\",\n    \"seller\": {\"@type\": \"Organization\", \"name\": \"Compoden\"}\n  },\n  \"category\": \"Smart Home \u0026 Living\"\n}\n\u003c\/script\u003e","brand":"Compoden","offers":[{"title":"Clone","offer_id":53463904223597,"sku":"CDN-KIT-3673-CL","price":5490.0,"currency_code":"INR","in_stock":true},{"title":"R3 Original","offer_id":53463904256365,"sku":"CDN-KIT-3673-R3","price":7760.0,"currency_code":"INR","in_stock":true},{"title":"R4 WiFi","offer_id":53463904289133,"sku":"CDN-KIT-3673-R4","price":7130.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/3997\/5533\/files\/kit-senior-movement-alert-kit-with-arduino-nano-plus-ldr.png?v=1781949487","url":"https:\/\/compoden.com\/products\/arduino-nano-senior-alert-kit-pir-led-ring-for-bathroom-safety","provider":"Compoden","version":"1.0","type":"link"}