Arduino Mega Smart Garden Kit - PID-Driven Climate Automation
Advanced Smart Greenhouse Climate Control Kit - Arduino Mega with PID-Loop Automation
Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.
The kit lets you instrument a full greenhouse or indoor garden with multi-point sensing and closed-loop actuation. Monitor soil moisture in two separate zones, track ambient temperature and humidity with dual DHT22 sensors, measure CO2 concentration with the MH-Z19B, and read light levels with a BH1750 lux sensor. The Arduino Mega orchestrates two servo-driven vent doors, a relay-switched fan for heat extraction, and a relay-driven heater - all under a software PID logic that holds variables within setpoints. Logging onto a microSD card with timestamps from a DS3231 RTC creates a complete telemetry record.
What You'll Build
You'll assemble a full-featured greenhouse environmental controller that maintains stable growing conditions without manual intervention. The system reads temperature, humidity, soil moisture, CO2, and light; then drives vent servos, a fan, and a heater using PID algorithms. The OLED displays live metrics while an SD card logs cycles, giving you a working prototype ready for deeper customization or expansion into IoT connectivity.
What You'll Learn
- Implement multi-sensor fusion: reading DHT22, MH-Z19B, BH1750, and capacitive soil moisture sensors simultaneously on Arduino Mega
- Design PID control loops for environmental variables - tune proportional, integral and derivative gains for vent, heater and fan actuators
- Drive servo motors for precise vent positioning and switch AC loads safely via relay modules with snubber protection
- Build a data logging system with DS3231 RTC timestamps and microSD storage for long-term greenhouse analysis
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 |
| 10k? 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
Ideal for B.Tech ECE/EEE students building agricultural automation capstone projects, Smart India Hackathon participants developing precision farming prototypes, and ATL Tinkering Lab mentors guiding advanced sensor-actuator integration. If you're preparing for campus innovation challenges at NIT, VIT, or BITS and need a fully spec'd greenhouse control system in a single purchase, this kit eliminates the parts headache and lets you focus on algorithm design and testing.
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?
Open the AI companion on your phone - it recognizes this kit's wiring and code. If something unexpected happens, message us on WhatsApp for direct help from an engineer.
Does the kit come with the PID code pre-written?
Yes, the AI companion provides complete, commented PID loop code for Arduino Mega covering temperature, humidity, and CO2 control, which you can tune during the build.
Can I expand this to monitor more soil zones?
The Mega has ample I/O; the AI companion includes notes on adding extra soil moisture sensors and scaling the logging routine to handle additional channels.
Is this suitable for an actual greenhouse, or just educational?
It uses genuine industrial-grade sensors and relays rated for AC loads. With proper enclosure and wiring, the system can run a small to medium greenhouse, not just a demo.
Garden - 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