HVAC Performance Monitor Lab Kit with ESP32 + DHT22
ESP32 HVAC Performance Monitor Kit: Master FreeRTOS Producer-Consumer Tasks
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’ll assemble a dual-zone environmental monitor that logs real‑time temperature, humidity, and pressure to the cloud. The ESP32 runs two FreeRTOS tasks: a producer that reads sensors into a queue, and a consumer that processes data and publishes via MQTT. It’s the same producer‑consumer pattern used in professional automotive and building automation systems, scaled for a weekend lab.
What You'll Build
Two DHT22 sensors and a BMP280 feed a sleek OLED display and an MQTT dashboard, so you can watch HVAC conditions in two rooms side by side. The system updates every few seconds, giving you a living data logger that responds like a real building management panel. All code is structured with task priorities and queue depth you can tune yourself.
What You'll Learn
- Implement producer‑consumer tasks using FreeRTOS queues on ESP32
- Interface DHT22 (one‑wire) and BMP280 (I²C) sensors, handling timing and addressing
- Publish structured sensor JSON via MQTT to any cloud broker or local dashboard
- Debug RTOS task stack sizing, watchdog timers, and inter‑task synchronization
Kit Contents
| Component | Quantity |
|---|---|
| ESP32 Dev Board | 1 |
| DHT22 Temperature & Humidity Sensor | 2 |
| BMP280 Barometric Pressure Sensor | 1 |
| 0.96in OLED Display (128x64) | 1 |
| 4.7kΩ Resistors | 10 |
| 100nF Ceramic Capacitors | 5 |
| 400-pt Breadboard | 1 |
| Male-to-Male Jumper Wires | 20 |
| Micro USB Cable | 1 |
Why Buy This Kit Instead of Sourcing Parts Separately
| Factor | Sourcing Separately | Compoden Kit |
|---|---|---|
| Compatibility checks | You must match DHT22 timing, BMP280 I²C addresses, and MQTT library versions | ESP32, sensors, and display pre-validated for this exact configuration |
| Build support | Forums with generic RTOS examples, not project-specific | AI companion trained on this exact project |
| Time to first working build | Days spent resolving FreeRTOS stack overflows and MQTT connection drops | Complete build in 3-4 hours with AI-guided task wiring and MQTT configuration |
| Shipping coordination | Ordering sensors, resistors, and OLED from different sellers across India | One shipment from Bengaluru in 3-5 days |
Who This Kit Is For
Ideal for CBSE Class 11–12 students exploring IoT and embedded systems, B.Tech ECE/EEE freshers tackling RTOS lab assignments, and ATL Tinkering Labs introducing real-time operating systems. Perfect for Smart India Hackathon teams building HVAC automation prototypes that need reliable multi-sensor data pipelines.
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?
Scan the QR code to access the AI companion, which knows this specific circuit and FreeRTOS code structure. WhatsApp support is available from 10 AM to 8 PM IST.
Do I need prior RTOS experience?
You should be comfortable with Arduino IDE or ESP-IDF basics. The AI companion explains producer-consumer patterns step by step, so even if you’re new to RTOS, you’ll learn by doing.
Can I use this kit for a college minor project or hackathon?
Absolutely. It’s compact and demonstrates core embedded systems concepts—perfect for B.Tech mini-projects, Smart India Hackathon prototypes, or ATL innovation challenges.
Can I monitor temperature and humidity in two different rooms?
Yes, the kit includes two DHT22 sensors on separate pins. The producer task reads both in sequence, and the OLED can display zones side by side, while MQTT publishes each room’s data independently.
HVAC — Producer task reads sensors into FreeRTOS queue. Consumer task processes and publishes to MQTT. Learn RTOS.
What's in this kit
- ESP32 Dev Board
- DHT22 x2
- BMP280
- 0.96in OLED
- 4.7kΩ Resistors x10
- 100nF Caps x5
- 400-pt Breadboard
- M-M Wires x20
- Micro USB Cable
Other projects you can build
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