{"product_id":"esp32-hvac-monitor-kit","title":"ESP32 HVAC Monitor Kit","description":"\u003ch1\u003eESP32 HVAC Sensor Network Kit - Monitor Temperature and Humidity Across Multiple Zones with Node-RED\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 Intermediate\u003c\/span\u003e\n  \u003cspan\u003e\u003cstrong\u003eBuild Time:\u003c\/strong\u003e 4-5 hrs\u003c\/span\u003e\n  \u003cspan\u003e\u003cstrong\u003eAge:\u003c\/strong\u003e 15-18\u003c\/span\u003e\n  \u003cspan\u003e\u003cstrong\u003eSkill:\u003c\/strong\u003e Multi-node IoT networking\u003c\/span\u003e\n\u003c\/div\u003e\n\n\u003cp\u003eMonitor temperature and humidity across five rooms, server racks, or HVAC zones-all from a single live dashboard. This kit provides everything required to assemble a wireless sensor network that publishes readings to a local MQTT broker and visualizes them in Node-RED. Ideal for facility managers, engineering students, and home automation enthusiasts.\u003c\/p\u003e\n\n\u003ch2\u003eWhat You'll Build\u003c\/h2\u003e\n\u003cp\u003eYou'll create a fully functioning 5-node sensor network. Each ESP32 reads temperature and humidity from its DHT22, with three nodes also capturing barometric pressure via BMP280. All data streams to a Mosquitto broker running on your laptop or Raspberry Pi, and a Node-RED dashboard displays the readings in real time. The result is a centralized monitoring panel that you can access from any device on the network.\u003c\/p\u003e\n\n\u003ch2\u003eWhat You'll Learn\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eDeploy and configure an MQTT broker for reliable IoT communication\u003c\/li\u003e\n  \u003cli\u003eProgram ESP32 microcontrollers to read DHT22 and BMP280 sensors over I2C and one-wire interfaces\u003c\/li\u003e\n  \u003cli\u003eDesign a multi-node wireless sensor mesh using publish-subscribe messaging\u003c\/li\u003e\n  \u003cli\u003eBuild an interactive Node-RED dashboard that visualizes live temperature, humidity, and pressure trends\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eKit Contents\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\u003ctr\u003e\u0026lt;\n\n\u003cdiv class=\"kit-description\"\u003e\n  \u003cp\u003eHVAC - Five ESP32 sensor nodes publish to a local Mosquitto broker. Node-RED dashboard shows all readings live.\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 x5\u003c\/li\u003e\n    \u003cli\u003e\n\u003ca href=\"\/products\/dht22-temperature-humidity-sensor-module-accurate-readings\"\u003eDHT22\u003c\/a\u003e x5\u003c\/li\u003e\n    \u003cli\u003e\n\u003ca href=\"\/products\/bmp280-barometric-pressure-temperature-sensor-module-compodenin\"\u003eBMP280\u003c\/a\u003e x3\u003c\/li\u003e\n    \u003cli\u003e\n\u003ca href=\"\/products\/resistor-variety-pack-100-pcs-10-values-14w-carbon-film\"\u003e4.7k? Resistors\u003c\/a\u003e x15\u003c\/li\u003e\n    \u003cli\u003e\n\u003ca href=\"\/products\/capacitor-variety-pack-6-values-100nf-to-470uf-30-pieces\"\u003e100nF Caps\u003c\/a\u003e x15\u003c\/li\u003e\n    \u003cli\u003e\n\u003ca href=\"\/products\/breadboard-standard-bundle-830400-tie-points-for-prototyping\"\u003e400-pt Breadboard\u003c\/a\u003e x5\u003c\/li\u003e\n    \u003cli\u003eM-M Wires x50\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 x5\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 HVAC Performance Monitor Kit with ESP32 + DHT22 v4?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The HVAC Performance Monitor Kit with ESP32 + DHT22 v4 includes all components needed: ESP32 Dev Board, DHT22, BMP280, 4.7k? Resistors, 100nF Caps 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 HVAC Performance Monitor Kit with ESP32 + DHT22 v4?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"This kit is designed for Intermediate level makers, suitable for ages 15-18. HVAC - Five ESP32 sensor nodes publish to a local Mosquitto broker. Node-RED dashboard shows all readings live. Estimated build time is 4-5 hrs.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Can I buy the HVAC Performance Monitor Kit with ESP32 + DHT22 v4 online in India?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes, the HVAC Performance Monitor Kit with ESP32 + DHT22 v4 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\": \"HVAC Performance Monitor Kit with ESP32 + DHT22 v4\",\n  \"description\": \"HVAC - Five ESP32 sensor nodes publish to a local Mosquitto broker. 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