HVAC Performance Monitor Kit with ESP32 + DHT22 v8
Wireless HVAC Heatmap Monitor – ESP32 + 5 DHT22 Sensor Nodes Kit
Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.
Map the thermal footprint of any room by building a distributed sensor network. This kit combines five DHT22 temperature/humidity nodes with an ESP32 hub, letting you understand how your HVAC system distributes cool or warm air — perfect for science fair exhibits, BTech mini-projects, or validating your own room’s climate control.
What You'll Build
A fully wireless monitor that captures temperature from five locations, transmits data via NRF24L01 modules, and renders a live interpolated heatmap in your browser. Move sensors around and watch the heatmap update — no additional cloud services required. You’ll have a tangible tool to study heat flow, ventilation effectiveness, or even demonstrate building automation concepts.
What You'll Learn
- Establish multi-node wireless communication using NRF24L01 modules between five Arduino Nano endpoints and a central ESP32.
- Interface and calibrate DHT22 temperature/humidity sensors, understanding timing, pull-up resistors, and noise immunity.
- Program an ESP32 web server that serves a real-time dashboard with HTML5 Canvas and client‑side interpolation to smooth discrete readings into a heatmap.
- Debug power stability issues in RF circuits, including decoupling capacitors and antenna placement, to achieve reliable packet delivery.
Kit Contents
| Component | Quantity |
|---|---|
| ESP32 Dev Board | 1 |
| Arduino Nano | 5 |
| DHT22 | 5 |
| NRF24L01 | 6 |
| 4.7kΩ Resistors | 15 |
| 100nF Caps | 20 |
| 400-pt Breadboard | 5 |
| Micro USB Cable | 6 |
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
This kit fits BTech ECE and EEE students tackling IoT lab work, CBSE Class 11‑12 teams preparing ATL Tinkering Lab exhibitions on smart buildings, and Smart India Hackathon squads prototyping energy-efficiency monitoring. It also equips hobbyists who want a structured introduction to wireless sensor arrays and browser‑based visualization without piecing together inconsistent parts from multiple shops.
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 on the box to launch the AI companion that walks you through wiring, code upload, and debugging. If you need human help, reach us on WhatsApp for a reply within a few hours.
Can the system monitor humidity as well?
Yes, the DHT22 measures both temperature and humidity. The pre‑loaded web app displays temperature by default, but the AI companion will show you how to switch to humidity heatmaps in the code.
Do I need to write code from scratch?
No. The kit includes fully commented Arduino sketches and ESP32 web server code. The AI companion helps you upload and customize variables like data refresh rate or heatmap colour scale.
What if my NRF24L01 modules have connection issues?
The AI companion will guide you through adding the supplied 100nF capacitors across the module power pins, verifying antenna positioning, and adjusting data rates to improve range and reliability.
HVAC — Five DHT22 nodes post to ESP32. Web app renders interpolated room temperature heatmap in browser.
What's in this kit
- ESP32 Dev Board
- Arduino Nano x5
- DHT22 x5
- NRF24L01 x6
- 4.7kΩ Resistors x15
- 100nF Caps x20
- 400-pt Breadboard x5
- Micro USB Cable x6
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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