Monitor Your Greenhouse Remotely with the ESP32 + DHT22 v9 REST API Kit

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

Turn your greenhouse into a data-driven environment. This kit guides you through building a WiFi-connected sensor array that publishes temperature, humidity, pressure, and precise timestamps as a JSON array — ready to be consumed by Grafana for rich time series dashboards. It’s a complete, real-world implementation of IoT data serving without cloud dependencies.

What You'll Build

You'll assemble the ESP32 micro-controller with two DHT22 sensors (ambient and soil-proximate), a BMP280 barometric pressure sensor, and a DS3231 real-time clock for accurate log stamping. The firmware hosts a RESTful API endpoint that delivers live readings in structured JSON. A Grafana instance can pull the data at regular intervals, or you can view the raw stream in any browser. The MicroSD module stores historical logs locally, giving you dual recording paths — API-driven dashboards plus persistent on-device archives.

What You'll Learn

• Connect multiple I2C sensors on a single bus without address conflicts
• Write an asynchronous REST API using the ESP32’s WiFi stack
• Timestamp sensor logs with a DS3231 real-time clock for high accuracy
• Structure JSON data payloads optimized for Grafana ingestion
• Debug sensor-to-API communication using serial monitor and basic web tools

Kit Contents

Why Buy This Kit Instead of Sourcing Parts Separately

Who This Kit Is For

Perfect for CBSE Class 12 students prototyping IoT-based agriculture projects, B.Tech ECE/EEE sophomores building a REST API for academic submissions, and Smart India Hackathon teams needing a reliable sensor-to-dashboard module. ATL Tinkering Labs can use it to teach embedded networking, while hobbyists get a complete package for a miniature greenhouse weather station.

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.