Greenhouse Climate Monitor Kit with Raspberry Pi 4 + Relay
Build a Smart Greenhouse Climate Monitor with Raspberry Pi 4 & Home Assistant
Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.
Imagine a greenhouse that waters itself when humidity drops, turns on fans when it gets too hot, and logs temperature trends — all without you touching a button. With this kit, you'll build that system using the same professional tools that run smart homes: a Raspberry Pi 4 running Home Assistant OS, DHT22 sensor, and dual relay modules.
What You'll Build
You'll assemble a fully functional greenhouse climate monitor that displays real-time temperature and humidity on the Home Assistant dashboard. The dual relays let you control two appliances independently — perhaps a misting system and an exhaust fan — based on custom automation rules. You can expand further with Zigbee sensors for soil moisture or light levels, creating a truly intelligent growing environment.
What You'll Learn
- Setting up Home Assistant OS on Raspberry Pi 4 and configuring the dashboard
- Interfacing DHT22 sensor via GPIO to read accurate temperature and humidity
- Wiring relay modules with flyback diodes for safe control of high-current devices
- Creating automation rules in Home Assistant to activate relays based on sensor thresholds
Kit Contents
| Component | Quantity |
|---|---|
| Raspberry Pi 4 Model B 4GB | x1 |
| 5V Relay Module | x2 |
| DHT22 | x1 |
| 1N4007 Diode | x5 |
| 10kΩ Resistors | x5 |
| 40-pin GPIO Header | x1 |
| M-F Wires | x20 |
| MicroSD Card 32GB | x1 |
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
CBSE Class 11-12 students exploring IoT projects, B.Tech ECE/EEE students prototyping home automation, Smart India Hackathon participants building agriculture solutions, and ATL Tinkering Lab innovators will find this kit directly relevant. It’s also ideal for hobbyists setting up precision greenhouse controls or college clubs at VIT, NIT, or IIT that need a real-world smart home integration project.
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 guides you through every wiring step and configuration. If you prefer human help, you can message us on WhatsApp — we answer build questions within hours.
Can I control more than two appliances?
Yes. The kit includes two relay modules, but the GPIO header supports additional relays. The AI companion shows how to stack relays and even integrate Zigbee smart plugs through an external dongle, letting you control irrigation pumps, grow lights, and heaters wirelessly.
Do I need prior experience with Home Assistant?
Not at all. The step-by-step instructions cover flashing the Home Assistant OS to the microSD card, accessing the dashboard, and creating your first automation. Basic Raspberry Pi familiarity is helpful but not required.
Is a Zigbee dongle included in the kit?
The kit does not include a Zigbee dongle, but it is fully compatible with common USB sticks like CC2531 or Conbee II. The AI companion provides straightforward instructions for integrating Zigbee sensors and adding them to your Home Assistant setup.
Greenhouse — Pi 4 runs Home Assistant OS. GPIO relay control, Zigbee dongle support, automation rules for smart home.
What's in this kit
- Raspberry Pi 4 Model B 4GB
- 5V Relay Module x2
- DHT22
- 1N4007 Diode x5
- 10kΩ Resistors x5
- 40-pin GPIO Header
- M-F Wires x20
- MicroSD Card 32GB
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