Server Room Temperature Monitor Kit with ESP32 + DHT22 v5
Build an AES-Encrypted Server Room Temperature Monitor with ESP32 & 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.
You will build a fully functional environmental monitor that encrypts temperature and humidity readings with AES-128 before transmitting them over MQTT. The gateway decrypts the data and stores it in an InfluxDB time-series database for real-time dashboards and historical analysis. This is exactly the kind of infrastructure monitoring used in modern data centres, adapted for hands-on learning.
What You'll Build
After assembling this kit, you will have a tamper-resistant, network-connected sensor node that fits inside a server rack. It measures temperature (DHT22 + BMP280), timestamps readings with an RTC, and publishes AES-encrypted MQTT payloads to your local gateway. The OLED display shows live stats and encryption status, while the microSD logs encrypted data for offline backup.
What You'll Learn
- Implement AES-128 encryption in C++ on the ESP32 microcontroller
- Configure a secure MQTT client with TLS and publish encrypted JSON payloads
- Set up a decryption gateway and insert data into InfluxDB using Python
- Integrate real-time clock (DS3231) timestamps and buffer writes to microSD
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 Caps | 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
Engineering students (B.Tech ECE/EEE) pursuing IoT security projects, participants in Smart India Hackathon or similar challenges, and advanced hobbyists from ATL Tinkering Labs who want real‑world encryption practice. IIT, NIT, VIT, and BITS students will find the MQTT‑InfluxDB pipeline directly relevant to infrastructure monitoring coursework.
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?
Open the AI companion via the QR code on the box for step‑by‑step assistance specific to this project, or reach our team on WhatsApp for direct support.
Does the AES‑128 encryption work out‑of‑the‑box?
The firmware comes pre‑flashed with a known key for testing. You can generate and inject your own key using the included Python script to make the node unique.
Can I use this kit to monitor multiple server racks?
Yes — each ESP32 acts as an independent MQTT publisher. You can scale the setup by replicating nodes and pointing them to the same InfluxDB gateway.
What software tools do I need to set up the InfluxDB gateway?
A guide is included to install InfluxDB, Mosquitto MQTT broker, and the Python decryption script on a Raspberry Pi or Linux server. The AI companion can also walk you through Docker-based setup.
Data Centre — 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