Automated Greenhouse System Kit with Arduino Mega + DHT22
Automated Greenhouse System Kit: Build a Self-Regulating Environment with Arduino Mega PID Control
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 advanced kit empowers you to engineer a fully autonomous greenhouse that continuously monitors temperature, humidity, CO2, light intensity, and soil moisture. Using a proven PID algorithm—the same logic found in industrial climate controllers—it dynamically opens servo-driven vents, switches a heater, and circulates air to maintain stable growing conditions, all while logging sensor data with precise timestamps.
What You'll Build
You'll assemble a functional environmental control station centred around a 0.96-inch OLED display showing live sensor readings and relay status. The microSD module logs every data point alongside an RTC timestamp, creating a complete climate history for analysis. Proportional servo vents respond in real-time to PID output, while two independent relays safely manage the heater and fan—giving you a working model that can be scaled to a real greenhouse or demonstrated in a project review.
What You'll Learn
- Implement a PID control loop to regulate temperature and humidity with minimal overshoot
- Calibrate and interface DHT22, MH-Z19B CO₂, BH1750 lux, and soil moisture sensors on Arduino Mega
- Control high-current appliances via relays and operate servo motors for precise vent positioning
- Build a timestamped data logger using a DS3231 RTC and microSD module for long-term environmental monitoring
Kit Contents
| Component | Quantity |
|---|---|
| Arduino Mega 2560 | 1 |
| DHT22 | 2 |
| Soil Moisture Sensor | 2 |
| MH-Z19B CO2 | 1 |
| BH1750 | 1 |
| 4-ch Relay Module | 1 |
| SG90 Servo | 2 |
| MicroSD Module | 1 |
| DS3231 RTC | 1 |
| 0.96in OLED | 1 |
| 10kΩ Resistors | 10 |
| 100nF Caps | 15 |
| PCB Prototype Board | 2 |
| 12V Adapter | 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
This kit is squarely aimed at B.Tech ECE and EEE students building capstone projects or preparing for Smart India Hackathon—it delivers the integration complexity that faculty at IIT, NIT, and VIT expect. It’s equally suited for advanced hobbyists who have mastered basic Arduino tasks and now want to dive into PID tuning, multi‑sensor fusion, and safety‑rated relay control. If you’re ready to move beyond blinking LEDs and true environmental automation, this is your next step.
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 or reach out on WhatsApp—the AI companion for this kit walks you through every wiring step, calibration, and PID tuning iteration, and our team is ready to help if you need it.
Do I need a real greenhouse to test this?
Not at all. All sensors can be placed in any indoor space. You can simulate closed‑loop conditions inside a small, sealed box, and the system will still demonstrate full PID control and data logging.
Is soldering experience required?
Yes, you’ll need to assemble the prototype board. The included soldering iron and solder wire make it straightforward, and the AI guide includes a soldering primer if you’re new to it.
Can I adapt the PID constants for different plants or climates?
Absolutely. The code is open‑source, and the AI companion will guide you through tuning the Kp, Ki, and Kd values so you can tailor the system to any specific temperature or humidity profile.
DHT22 + soil + CO2 + lux control servo vents, relay fan and relay heater with PID.
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.
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