ESP32 HVAC Monitor Kit - REST API Server with Grafana Visualization

Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.

Transform an ESP32 into a networked HVAC data server that speaks JSON. Two DHT22 sensors measure temperature and humidity, a BMP280 adds barometric pressure, and the DS3231 RTC stamps every reading with precise time. When built, this device serves a REST endpoint from which Grafana pulls live and historical environmental data to plot multi-panel time-series charts - exactly what you need to monitor air-conditioning performance in a lab, server room, or hackathon prototype.

What You'll Build

You'll wire up a multi-sensor board on a breadboard, flash the ESP32 with pre-validated firmware, and access a URL like /api/readings that returns a JSON array of sensor snapshots. On any device in the same WiFi network, Grafana queries that endpoint at regular intervals and renders auto-refreshing dashboards for temperature, humidity, pressure, and dew point. The result is a professional-grade monitoring system that mirrors real-world IoT architectures used in smart buildings.

What You'll Learn

• Configuring an ESP32 as a web server that serves REST API endpoints over WiFi
• Interfacing digital sensors (DHT22, BMP280) over one-wire and I2C protocols
• Building Grafana dashboards with a JSON data source and time-series visualization
• Timing data acquisition precisely with a DS3231 RTC and storing logs on a microSD card

Kit Contents

Why Buy This Kit Instead of Sourcing Parts Separately

Who This Kit Is For

Intermediate-level makers aged 15-18 who already know basics of Arduino or ESP32 and want to dive into IoT networking. CBSE Class 12 students can use it for computer science or electronics investigatory projects. B.Tech ECE/EEE students will find it ideal for IoT lab exercises and Smart India Hackathon prototypes. ATL tinkering lab mentors can deploy it as a ready-made workshop on sensor clouds and dashboards.

Built and Backed by Compoden

Every 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.