Smart Garden Watering Kit v7
Automate Your Garden's Watering with Real-Time MQTT Logging Using Raspberry Pi Pico W
Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.
Keep your garden thriving without daily watering chores. This kit connects two capacitive soil moisture sensors to a Raspberry Pi Pico W, which activates a relay-driven submersible pump only when the soil is dry. Every irrigation event is published to an MQTT log, allowing you to track water usage patterns and refine schedules over time.
What You'll Build
You assemble a self-contained irrigation controller on a 400-point breadboard. The Pico W reads sensor voltages, decides when watering is needed, and toggles the relay module. The 0.96-inch OLED shows live moisture percentages, pump status, and MQTT connection health. Once running, you can monitor the entire system remotely from any device subscribed to the same broker.
What You'll Learn
- MicroPython programming for the Raspberry Pi Pico W's WiFi and GPIO
- Interfacing analog soil moisture sensors and mapping values to watering thresholds
- Driving a pump safely with a relay module and 1N4007 flyback diode protection
- Configuring MQTT clients to publish structured irrigation data to a cloud broker
Kit Contents
| Component | Quantity |
|---|---|
| Raspberry Pi Pico W | 1 |
| Soil Moisture Sensor | 2 |
| 5V Relay Module | 1 |
| Mini Submersible Pump | 1 |
| 0.96in OLED | 1 |
| 1N4007 Diode | 3 |
| 10kΩ Resistors | 5 |
| Silicone Tube 30cm | 1 |
| 400-pt Breadboard | 1 |
| M-M Wires | 25 |
| 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 CBSE Class 11-12 students building physics or computer science projects, B.Tech ECE/EEE undergraduates preparing prototypes for Smart India Hackathon, and ATL Tinkering Lab facilitators who need a ready-to-assemble sensor automation module. Hobbyists at IIT, NIT, VIT, and BITS campuses will also find it a compact introduction to MQTT-based IoT.
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 chat with the AI build companion, which knows the circuit and code line by line. You can also reach our support team on WhatsApp for direct help.
Do I need prior experience with MQTT?
No. The build companion walks you through setting up a free broker like test.mosquitto.org and explains every line of the publish function. By the end you'll understand QoS, topics, and retain flags.
Is the pump safe to run with a breadboard?
Yes — the relay isolates the pump's higher current from the Pico W. The 1N4007 diode suppresses voltage spikes when the relay switches off. Always use a separate 5V supply for the pump as shown in the wiring guide.
Can I deploy this outdoors in my garden?
The components are not weatherproof, but you can house the breadboard and Pico W in a ventilated plastic project box. Keep the sensors and pump shielded from direct rain and sun to maintain consistent readings.
Garden — Soil moisture below threshold triggers relay pump. Pico W posts irrigation events to MQTT log.
What's in this kit
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