{"product_id":"kit-esp32-mdns-local-hostname","title":"ESP32 mDNS Local Hostname Kit with ESP32 + DHT22","description":"\u003ch1\u003eESP32 mDNS Local Hostname Kit — Access Your Web Server by Name, Not IP\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 IoT Networking \u0026amp; Web Servers\u003c\/span\u003e\n\u003c\/div\u003e\n\n\u003cp\u003eThink of typing a name instead of a string of numbers to reach a device. This kit lets you build exactly that: an ESP32 that hosts a mini website showing live temperature and humidity, and you simply open a browser and type \u003ccode\u003ecompoden.local\u003c\/code\u003e on any phone, tablet, or laptop connected to the same Wi-Fi. No need to hunt for IP addresses. It’s a practical first step into how smart devices talk to each other on local networks, and it’s designed for beginners to get a working project in one afternoon.\u003c\/p\u003e\n\n\u003ch2\u003eWhat You'll Build\u003c\/h2\u003e\n\u003cp\u003eYou’ll wire a DHT22 sensor and two indicator LEDs on a breadboard, connect the ESP32, and upload a sketch that turns the microcontroller into a web server. Once it connects to your Wi-Fi, the device announces itself as \u003ccode\u003ecompoden.local\u003c\/code\u003e across the network. Any browser that visits that address sees a page with real-time temperature and humidity readings. The LEDs blink to confirm network activity and status. It’s a self-contained IoT node you can monitor from anywhere in the house without ever touching an IP address.\u003c\/p\u003e\n\n\u003ch2\u003eWhat You'll Learn\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eHow mDNS (Multicast DNS) works — making devices discoverable on a local network without a central DNS server\u003c\/li\u003e\n  \u003cli\u003eProgramming an ESP32 web server with the Arduino framework, serving dynamic HTML pages\u003c\/li\u003e\n  \u003cli\u003eInterfacing the DHT22 temperature\/humidity sensor and reading accurate environmental data\u003c\/li\u003e\n  \u003cli\u003eUsing LEDs as visual status indicators, with resistor sizing to protect the GPIO pins\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\u003eESP32 Dev Board\u003c\/td\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eDHT22\u003c\/td\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e5mm LED\u003c\/td\u003e\n\u003ctd\u003e2\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e4.7kΩ 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\u003e15\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMicro USB Cable\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 — from the pull-up resistor value for the DHT22 to breadboard spacing\u003c\/td\u003e\n\u003ctd\u003ePre-tested as a system; resistors, sensor, and board are guaranteed to work together without extra hunting\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eBuild support\u003c\/td\u003e\n\u003ctd\u003eForums and scattered tutorials, often with mismatched library versions or incomplete wiring diagrams\u003c\/td\u003e\n\u003ctd\u003eAI companion trained on this exact project, plus WhatsApp backup for human guidance\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 unfamiliar errors and waiting for missing components\u003c\/td\u003e\n\u003ctd\u003eHours, with step-by-step instructions that include the exact Arduino libraries and code\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eShipping coordination\u003c\/td\u003e\n\u003ctd\u003eMultiple sellers, multiple delays, risk of one missing part halting the whole project\u003c\/td\u003e\n\u003ctd\u003eOne shipment from Bengaluru in 3-5 days, everything packed together\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 fits neatly into the CBSE Class 11-12 curriculum for IoT and networking, and it’s a perfect mini-project for first-year B.Tech ECE or EEE students. It’s also popular in ATL Tinkering Labs where younger learners (ages 10 and up) get their first taste of connected devices, and it can serve as a rapid prototype module for Smart India Hackathon teams. If you’re a parent or teacher guiding a curious child through the world of electronics, the accessible step-by-step guidance makes you feel like both teacher and student can succeed together.\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 AI companion through the QR code for guided troubleshooting; you can also send a message on WhatsApp and our support team will help you through the issue.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eDo I need a separate Wi-Fi router for this kit?\u003c\/summary\u003e\u003cp\u003eThe ESP32 connects to your existing home, school, or lab Wi-Fi network. No extra hardware is needed beyond the router you already use.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eCan I change the hostname from compoden.local to something else?\u003c\/summary\u003e\u003cp\u003eYes, the Arduino sketch includes a variable that lets you rename the device — for example, ‘kitchen-monitor.local’ or ‘classroom-sensor.local’ — with a single line change.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat if the DHT22 shows wrong values or nothing at all?\u003c\/summary\u003e\u003cp\u003eDouble-check the sensor wiring and ensure the 4.7kΩ pull‑up resistor is properly placed between VCC and the data pin. The AI companion walks you through the exact connections and common pitfalls.\u003c\/p\u003e\u003c\/details\u003e\n\n\u003cdiv class=\"kit-description\"\u003e\n  \u003cp\u003eESP32 registers compoden.local mDNS hostname. Any browser on local network finds it by name not IP.\u003c\/p\u003e\n  \u003ch4\u003eWhat's in this kit\u003c\/h4\u003e\n  \u003cul\u003e\n    \u003cli\u003e\u003ca href=\"\/products\/esp32-30-pin-development-board-cp2102-wifi-bluetooth\"\u003eESP32 Dev Board\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"\/products\/dht22-temperature-humidity-sensor-module-accurate-readings\"\u003eDHT22\u003c\/a\u003e\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\"\u003e4.7kΩ 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 x15\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"\/products\/microusb-cable-1m-charging-data-cord-for-arduino-android\"\u003eMicro USB Cable\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 ESP32 mDNS Local Hostname Kit with ESP32 + DHT22?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The ESP32 mDNS Local Hostname Kit with ESP32 + DHT22 includes all components needed: ESP32 Dev Board, DHT22, 5mm LED, 4.7kΩ Resistors, 400-pt Breadboard 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 ESP32 mDNS Local Hostname Kit with ESP32 + DHT22?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"This kit is designed for Beginner level makers, suitable for ages 5-15. ESP32 registers compoden.local mDNS hostname. Any browser on local network finds it by name not IP. Estimated build time is 2-3 hrs.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Can I buy the ESP32 mDNS Local Hostname Kit with ESP32 + DHT22 online in India?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes, the ESP32 mDNS Local Hostname Kit with ESP32 + DHT22 is available online at Compoden (compoden.in), India's AI-powered electronics and robotics store. 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