HVAC Performance Monitor Kit
HVAC Performance Monitor Kit – Log Environmental Data to SD Card with Real-Time Clock and Live OLED Display
Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.
Monitor the efficiency and health of HVAC systems by capturing multiple environmental parameters simultaneously. This kit empowers you to build a rugged data logger that records temperature (DHT22), barometric pressure (BMP280), and ambient light (LDRs) on a microSD card with precise DS3231 RTC timestamps, while a bright OLED screen gives live readings. It’s a turnkey project for engineering students, hackathon teams, and early-career engineers who need to analyze indoor climate performance or validate ventilation designs.
What You'll Build
You’ll construct a standalone monitoring station that can be placed inside air handling units, cleanrooms, or server rooms. The finished device continuously logs sensor data to an 8GB microSD card, creating timestamped CSV files for later analysis in Python or Excel. The OLED shows a rotating display of temperature, humidity, pressure, and lux levels, so you can spot anomalies instantly without a laptop.
What You'll Learn
- Interfacing multiple I2C and analogue sensors on a single Arduino bus without address conflicts
- Implementing error‑checked SD card logging with real‑time clock (DS3231) to ensure data integrity during 24/7 operation
- Calibrating LDRs against a known lux reference and mapping sensor data to HVAC performance metrics
- Designing a compact prototype board layout that minimizes noise for sensitive BMP280 readings
Kit Contents
| Component | Quantity |
|---|---|
| Arduino Uno R3 | 1 |
| DHT22 | 1 |
| BMP280 | 1 |
| LDR | 2 |
| DS3231 RTC | 1 |
| MicroSD Module | 1 |
| MicroSD Card 8GB | 1 |
| 0.96in OLED | 1 |
| 10kΩ Resistors | 10 |
| 4.7kΩ Resistors | 5 |
| 100nF Caps | 10 |
| PCB Prototype Board | 2 |
| M-M Wires | 30 |
| M-F Wires | 20 |
| 9V Battery Snap | 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/EEE students working on mechatronics or IoT capstone projects, Smart India Hackathon participants building energy‑audit solutions, and ATL Tinkering Lab instructors mentoring advanced cohorts. It’s equally suited for IIT/NIT/VIT/BITS undergraduates who need a reliable data‑acquisition system for thermal comfort studies or indoor air quality monitoring. The included sensors match professional HVAC tool specifications, giving you credible data for technical reports.
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 in the box to open the AI companion, which walks you through wiring diagrams, code debugging, and calibration steps. You can also send photos via WhatsApp for real‑time support from our engineers.
Can I extend the logger to send data to the cloud?
Yes. The Arduino Uno R3 has a UART header where you can attach an ESP8266 or ESP32 module (not included) to push logged data to platforms like ThingSpeak or Blynk using the existing CSV output.
How long will the 9V battery last in the field?
With the OLED backlight off and the SD card in standby, the circuit draws about 25 mA, giving roughly 20 hours on a standard alkaline 9V battery. For permanent installation, we recommend a USB power bank connected to the Arduino’s DC jack.
Is the microSD card pre‑formatted and ready to use?
The included 8GB card is FAT32‑formatted and tested. Just insert it into the module, and the supplied code will create timestamped log files automatically.
HVAC — DHT22 + BMP280 + LDR log to SD card with RTC timestamps. OLED shows live values.
What's in this kit
- Arduino Uno R3
- DHT22
- BMP280
- LDR x2
- DS3231 RTC
- MicroSD Module
- MicroSD Card 8GB
- 0.96in OLED
- 10kΩ Resistors x10
- 4.7kΩ Resistors x5
- 100nF Caps x10
- PCB Prototype Board x2
- M-M Wires x30
- M-F Wires x20
- 9V Battery Snap
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