ESP32 Encrypted MQTT Sensor Kit: Build Secure IoT with AES-128 Encryption

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

Build a professional-grade IoT sensor node that protects sensitive environmental data with AES-128 encryption before publishing to any MQTT broker. This intermediate kit walks you through end-to-end secure communication - exactly what's needed for smart agriculture, industrial monitoring, or connected health prototypes. Once assembled, your node will encrypt temperature, humidity, and pressure readings on the ESP32, transmit them over MQTT, and decrypt them on the broker side.

What You'll Build

You'll create a tamper-proof IoT data pipeline: an ESP32 reads DHT22 and BMP280 sensors, encrypts the payload with AES-128, displays local readings on a 0.96-inch OLED, and publishes only ciphertext to an MQTT topic. A server-side script demonstrates decryption, giving you a full-stack view of secure IoT. This same blueprint can be extended to home automation, weather stations, or any project where data privacy matters.

What You'll Learn

• Encrypting sensor payloads with AES-128 in C++ on ESP32
• Configuring MQTT secure channels on a public broker
• Parsing I2C sensor data (DHT22, BMP280) and driving an OLED display
• Building a decryption bridge in Python for server-side data integrity

Kit Contents

Why Buy This Kit Instead of Sourcing Parts Separately

Who This Kit Is For

Designed for CBSE Class 11-12 students diving into cybersecurity and IoT, or B.Tech ECE/EEE undergraduates building prototypes for Smart India Hackathon. ATL Tinkering Lab instructors will find this kit ideal for demonstrating real-world data encryption. If you've tinkered with Arduino and want to understand how commercial IoT products keep sensor data safe, this kit bridges theory and practice.

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.