Hydroponics Auto-Watering Kit with Arduino Uno
Hydroponics Auto-Watering Kit with Arduino Uno - Keep Your Plants Perfectly Irrigated
Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.
Picture a hydroponics setup where your plants never wilt from underwatering, and the pump runs only when needed - no wasted water or electricity. With this kit, you'll build a real-time soil moisture monitoring system that controls a mini submersible pump via a relay, all managed by an Arduino Uno. An LCD screen displays current moisture, and smart hysteresis logic prevents the pump from chattering on/off rapidly.
What You'll Build
You'll assemble a fully functional automatic irrigation controller that reads moisture from two soil sensors, averages their values, and activates a pump when the soil gets too dry. The system uses a relay module to safely switch the pump, and an algorithm with hysteresis ensures stable, reliable watering cycles. The large 16x2 LCD gives you an at-a-glance status of soil moisture and pump state.
What You'll Learn
- Reading analog signals from soil moisture sensors and calibrating thresholds
- Using a relay module to control high-current devices with an Arduino
- Implementing hysteresis in code to prevent rapid on/off switching (chatter)
- Displaying real-time sensor data on an I2C LCD for user feedback
Kit Contents
| Component | Quantity |
|---|---|
| Arduino Uno R3 | 1 |
| Soil Moisture Sensor | 2 |
| 5V Relay Module | 1 |
| Mini Submersible Pump | 1 |
| Silicone Tube 30cm | 1 |
| 16x2 LCD | 1 |
| I2C Backpack | 1 |
| 1N4007 Diode | 5 |
| 10k? Resistors | 5 |
| 100nF Caps | 5 |
| 400-pt Breadboard | 1 |
| M-M Wires | 25 |
| 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 - sensor thresholds, relay coil flyback protection, and LCD backpack are verified together |
| Build support | Forums and scattered tutorials | AI companion trained on this exact project - helps with calibration, hysteresis coding, and wiring |
| Time to first working build | Days of debugging | Hours, with step-by-step guidance and schematics |
| Shipping coordination | Multiple sellers, multiple delays | One shipment from Bengaluru in 3-5 days |
Who This Kit Is For
This kit is ideal for CBSE Class 11-12 students working on agriculture automation projects, B.Tech ECE/EEE students exploring IoT in farming, and participants of Smart India Hackathon or ATL Tinkering Labs. It bridges classroom theory with a practical, working prototype you can demonstrate in your final project submission.
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 via QR code, describe your issue, and it will guide you step-by-step. You can also reach us on WhatsApp for human support within 24 hours.
Can I use this system for soil-based plants?
Yes, the soil moisture sensors work in any growing medium; you may need to adjust the moisture threshold calibration through a simple potentiometer on the sensors.
How does the hysteresis prevent pump chatter?
The Arduino sketch uses upper and lower moisture limits: the pump turns on when moisture drops below a low threshold, and stays on until it surpasses a higher threshold, preventing rapid cycling.
Can I expand to control more pumps or sensors?
With minor code modifications, you can monitor additional sensors and drive multiple relays using the Arduino's remaining digital pins, making it scalable for larger hydroponics setups.
Hydroponics - Soil moisture sensor triggers relay-driven pump when soil is dry. LCD shows live moisture. Hysteresis prevents pump chatter.
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