ESP32 Greenhouse Climate Kit with Encrypted MQTT Data - Secure IoT
ESP32 Greenhouse Climate Monitor with AES-128 Encryption & InfluxDB
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 cryptographically hardened climate logger that encrypts sensor data on the edge before it ever reaches the network. Designed for real greenhouse deployment, this ESP32 kit walks you through AES-128 payload encryption, MQTT publishing with TLS, and InfluxDB ingestion for time-series dashboards. Every component has been matched to avoid I2C address conflicts and power rail noise-so you spend time on the security logic, not on debugging hardware.
What You'll Build
A battery-backed sensor node that captures temperature, humidity, and atmospheric pressure from DHT22 and BMP280 every configurable interval. The ESP32 encrypts the JSON payload using a per-session AES-128 key, then publishes it over MQTT with TLS to a gateway. The gateway decrypts the stream and writes it directly into InfluxDB, ready for Grafana. Local feedback comes from a 0.96-inch OLED showing live readings and encryption status, while the microSD logs raw encrypted packets for audit trails. The enclosure and LM2596 buck converter let you deploy the node in humid greenhouse environments with a standard 5V supply.
What You'll Learn
- Implement AES-128 encryption on ESP32 using the mbedTLS library and manage key rotation
- Configure MQTT with TLS and publish structured, encrypted JSON payloads to a cloud or local broker
- Ingest decrypted time-series data into InfluxDB and design queries for Grafana visualization
- Integrate I2C sensors (DHT22, BMP280) and an OLED while managing power with the RTC and buck converter
Kit Contents
| Component | Quantity |
|---|---|
| ESP32 Dev Board | 1 |
| DHT22 | 1 |
| BMP280 | 1 |
| DS3231 RTC | 1 |
| MicroSD Module | 1 |
| LM2596 Buck Converter | 1 |
| 0.96in OLED | 1 |
| 4.7k? Resistors | 5 |
| 100nF Capacitors | 10 |
| PCB Prototype Board | 2 |
| Enclosure Box | 1 |
| 5V 2A PSU | 1 |
| Soldering Iron | 1 |
| Solder Wire | 1 |
Why Buy This Kit Instead of Sourcing Parts Separately
| Factor | Sourcing Separately | Compoden Kit |
|---|---|---|
| Compatibility checks | You verify every part | Pre-tested as a system |
| Build support | Forums and scattered tutorials | AI companion trained on this exact project |
| Time to first working build | Days of debugging | Hours, with step-by-step guidance |
| Shipping coordination | Multiple sellers, multiple delays | One shipment from Bengaluru in 3-5 days |
Who This Kit Is For
Final-year B.Tech students in ECE, EEE, or CSE who want to present a security-forward IoT project with real cryptographic rigor. Smart India Hackathon teams tackling agriculture or data integrity challenges will find a ready-made hardware baseline. Engineering students at IIT, NIT, VIT, and BITS Pilani can use this kit for major and mini projects that demand end-to-end data protection and time-series storage.
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.
What if I get stuck during the build?
The AI companion gives per-step assistance, and you can send photos over WhatsApp for human guidance.
Does this kit include pre-programmed firmware?
No, you will write the firmware from scratch using the companion's step-by-step chapters that cover encryption, MQTT, and InfluxDB integration.
Can I deploy this in a real greenhouse?
Yes. The sensor node is designed for high-humidity environments; simply swap the 5V PSU for a solar panel and battery, and the encrypted MQTT pipeline keeps your data safe.
What if my MQTT broker doesn't support TLS?
The build guide shows you how to set up a free Mosquitto broker with TLS on a cloud VM, or you can use a public broker that offers TLS, such as HiveMQ Cloud.
Greenhouse - Sensor data AES-128 encrypted on ESP32 before MQTT publish. Gateway decrypts and stores in InfluxDB.
What's in this kit
Choose your assembly option:
- Soldering Kit - 25W soldering iron, 60/40 solder wire, flux, and small perfboard for permanent assembly.
- Breadboard Combo - 800-point full-size breadboard with 65-piece jumper wire pack for solderless prototyping.
Shipping Information
- Prepaid Orders: ₹75 for orders up to ₹999, FREE shipping above ₹999
- COD Orders: ₹125 shipping + ₹50 COD fee = ₹175 total
- Delivery Timeline: Dispatch in 1-2 days, delivery in 2-7 days depending on location
Returns & Warranty
- 7-Day Return: Manufacturing defects only (approval required)
- Warranty: 7 days from delivery
- Non-Returnable: Batteries, consumables, cut wires, clearance items