Secure Server Room Temperature Monitor Kit with ESP32 and DHT22

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

Server rooms hold the backbone of modern infrastructure, but a single temperature spike or humidity drift can degrade hardware before any alarm sounds. This kit guides you through building a monitoring system that encrypts every sensor reading with AES-128 before publishing it over MQTT — so only your authorized broker can decrypt the data. It’s an intermediate project that blends practical electronics, programming, and real-world cybersecurity concepts.

What You'll Build

You’ll assemble a compact unit around an ESP32 that reads temperature and humidity from the DHT22, atmospheric pressure from the BMP280, and displays live values on a 0.96-inch OLED. The ESP32 encrypts the sensor payload using AES-128 in CBC mode, then publishes the encrypted string to an MQTT broker. A companion Python script on your laptop or server subscribes, decrypts, and logs the data — giving you a secure, end-to-end IoT monitoring dashboard for your server room.

What You'll Learn

• Interface the DHT22 (one-wire) and BMP280 (I2C) sensors with the ESP32 and read accurate environmental data.
• Program the ESP32 using the Arduino IDE to drive an OLED display and format sensor payloads for transmission.
• Implement AES-128 encryption on the ESP32 with a lightweight library and publish encrypted MQTT messages to a broker.
• Write a Python subscriber that receives encrypted payloads, decrypts them, and logs temperature, humidity, and pressure to a CSV file or visual dashboard.

Kit Contents

Why Buy This Kit Instead of Sourcing Parts Separately

Who This Kit Is For

This kit fits B.Tech ECE/EEE students exploring embedded security, Smart India Hackathon teams building IoT-based data centre solutions, and tinkerers from IITs, NITs, VIT, and BITS Pilani. It’s also a strong choice for CBSE Class 11-12 students who want a hands-on project that combines networking, encryption, and sensor integration.

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.