HVAC Monitor Kit v13: ESP32 BLE Sensor Station for HVAC Monitoring
Build an ESP32-Powered BLE Environmental Sensor Station
Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.
Transform any HVAC system into a wireless performance indicator. By reading temperature, humidity, pressure, and ambient light every second, this kit broadcasts live data over BLE advertisements to any nearby phone or monitor - no pairing needed. Whether you're auditing server room efficiency, fine-tuning greenhouse climate, or prototyping an IoT-based air-quality dashboard, this one-box solution gets you from unboxing to live data in hours.
What You'll Build
You'll assemble a compact sensor station that measures real-time environmental parameters and pushes them as BLE advertising packets. The 0.96in OLED screen shows local readings, while your smartphone or central dashboard receives the data stream continuously. Perfect for monitoring indoor air quality, detecting HVAC performance drift, or demonstrating wireless telemetry at hackathons.
What You'll Learn
- Calibrating and interfacing DHT22, BMP280, and LDR sensors with ESP32 over I2C and ADC
- Implementing BLE advertising payloads with custom data formats for multi-sensor broadcasting
- Reading atmospheric pressure for altitude estimation and HVAC diagnostics
- Designing a low-latency sensor telemetry system with 1-second update intervals
Kit Contents
| Component | Quantity |
|---|---|
| ESP32 Dev Board | 1 |
| DHT22 | 1 |
| BMP280 | 1 |
| LDR | 2 |
| 0.96in OLED | 1 |
| 4.7k? Resistors | 5 |
| 10k? Resistors | 5 |
| 100nF Caps | 5 |
| 400-pt Breadboard | 1 |
| M-M Wires | 20 |
| Micro USB Cable | 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
Ideal for B.Tech ECE/EEE students building final-year projects, participants in Smart India Hackathon focusing on IoT-enabled HVAC monitoring, and ATL Tinkering Lab mentors demonstrating advanced BLE sensor networks. Also suitable for engineering hobbyists aiming to deploy real-time environmental dashboards in server rooms, data centers, or agricultural polyhouses.
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 open your AI companion, which provides step-by-step debugging for this specific circuit. You can also send a photo via WhatsApp and our team will help within hours.
Can I display the sensor readings on a smartphone without an app?
Yes, the BLE advertising packets carry temperature, humidity, pressure, and light values in a standard format that any BLE scanner app (like nRF Connect) can decode without pairing. We provide example code for iOS and Android.
How far can the BLE signal travel?
In open air, the ESP32's BLE reaches up to 50 metres. Indoors, through walls, expect 10-20 metres. For longer range, you can add an external antenna or switch to Wi-Fi with our expansion guides.
Is this kit suitable for 24/7 building monitoring deployment?
Absolutely. The firmware is optimised for low power and stable broadcast intervals. With a 5V USB power supply, it runs continuously. For battery operation, consult the AI companion to tweak sleep cycles.
HVAC - ESP32 reads DHT22 + BMP280 + LDR and broadcasts all values over BLE advertisements every second.
What's in this kit
- ESP32 Dev Board
- DHT22
- BMP280
- LDR x2
- 0.96in OLED
- 4.7k? Resistors x5
- 10k? Resistors x5
- 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