HVAC Performance Monitor Kit v19
HVAC Performance Monitor Kit v19 — Build a Secure IoT Monitoring System with ESP32 and Mutual TLS
Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.
This kit puts you at the centre of a real-world industrial IoT challenge—monitoring HVAC performance over a network while ensuring every data packet is encrypted and authenticated. You will assemble a self-contained sensor unit and program it to connect to a Mosquitto MQTT broker using mutual TLS. The client certificate lives in the ESP32’s SPIFFS file system; the device verifies the server certificate before a single reading is sent. When you finish, you’ll have a wall-mountable monitor that pushes temperature, humidity, and pressure data to any secure broker you control.
What You'll Build
You will solder the DHT22, BMP280, and OLED display onto a custom PCB, house everything in the provided enclosure, and then write firmware that establishes a mutually authenticated TLS session with an MQTT broker. On the OLED, the device shows its connection state and the latest sensor values. In parallel, it publishes those values to a topic of your choice, ready to be consumed by building automation dashboards or analytical pipelines.
What You'll Learn
- Generating and storing client certificates in SPIFFS on the ESP32
- Configuring mutual TLS on the MQTT client so both ends verify identities
- Verifying a Mosquitto broker’s certificate against a trusted CA chain
- Reading environmental data from a combined DHT22 and BMP280 sensor set
- Assembling, soldering, and enclosure-mounting a production-grade prototype
Kit Contents
| Component | Quantity |
|---|---|
| ESP32 Dev Board | 1 |
| DHT22 | 1 |
| BMP280 | 1 |
| 0.96in OLED | 1 |
| 4.7kΩ Resistors | 5 |
| 100nF Caps | 5 |
| PCB Prototype Board | 2 |
| 5V 2A PSU | 1 |
| Enclosure Box | 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
B.Tech ECE and EEE students looking for a secure IoT project that stands out during final-year reviews or Smart India Hackathon demos. It’s equally suited to makers at IITs, NITs, VIT, or BITS Pilani who need to demonstrate end-to-end security in a tangible device. If you’ve already built basic sensor nodes and want to move into certificate-based authentication on embedded hardware, this kit is your next level.
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 with the QR code on the box; it knows every connection, certificate path, and broker setting for this kit. WhatsApp and email support are also available if you need a human touch.
How do I generate the TLS certificates for mutual authentication?
The AI companion includes step-by-step commands using OpenSSL on your laptop to create the CA, server certificate, and client certificate. No external paid service is needed.
Can I replace the DHT22 or BMP280 with other sensors later?
Absolutely. The PCB has breakout areas and the firmware structure is modular. The AI companion can guide you through adapting the code for alternative I2C or one-wire sensors.
Will the monitor work with any MQTT broker?
Yes, as long as the broker supports TLS with client certificate verification. The kit has been tested against a locally installed Mosquitto broker, but the principle applies to cloud brokers that accept mutual TLS connections.
HVAC — ESP32 connects to Mosquitto with mutual TLS. Client certificate stored in SPIFFS. Verifies server certificate.
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