Lawn Irrigation Controller Pro Kit with Arduino Uno + Sensor
Arduino Lawn Irrigation Controller Kit: Build a Smart Watering System with Hysteresis
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 lawn that waters itself only when the soil truly needs it, without any fiddling with knobs or timers. This kit lets you assemble and code an Arduino-powered irrigation controller that senses soil moisture levels, displays them live on an LCD, and activates a submersible pump precisely when dryness threatens your grass. Best of all, the hysteresis logic you’ll program eliminates the annoying on-off chatter that ruins pumps and wastes water.
What You'll Build
You’ll create a standalone automated watering system driven by two soil moisture sensors. The Arduino reads both sensors, averages the values, and shows the moisture percentage on the bright 16x2 LCD. When the soil drops below your set threshold, the relay switches on the mini submersible pump, delivering water through the silicone tube. Because of the hysteresis band you’ll code, the pump runs until the soil is well moistened, then stays off until it genuinely dries out—no rapid cycling, no false triggers. The complete unit fits on a breadboard, ready to be connected to any home lawn or school garden bed.
What You'll Learn
- Calibrating and reading dual capacitive soil moisture sensors with Arduino
- Displaying real-time sensor data on an I2C-driven 16x2 LCD
- Controlling a relay module to switch a pump, including flyback diode protection
- Writing hysteresis logic in code to prevent pump chatter and ensure stable automation
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 |
| 10kΩ 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 |
| 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 tackling physics or computer science projects, first-year B.Tech (ECE/EEE) mini-projects, ATL Tinkering Lab innovators, and Smart India Hackathon teams focused on agriculture technology. If you maintain a home lawn, school garden, or terrace farm and want a reusable controller that teaches real automation principles, this kit delivers both the electronics and the learning.
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 the QR code; it can debug wiring, suggest code fixes, and explain concepts in real time. For direct help, our WhatsApp support is available on weekdays.
Why are two soil moisture sensors included instead of one?
Dual sensors let you average readings for better accuracy and compensate for dry spots in the soil. The code you’ll write takes the mean of both, making the system more reliable.
What is hysteresis and why does this kit use it?
Hysteresis creates a “dead band” between turn-on and turn-off moisture levels. Without it, the pump would constantly cycle at the threshold, damaging itself and wasting water. This kit teaches you to implement hysteresis in real code.
Can the mini submersible pump water an actual lawn?
The included pump is a learning tool and works perfectly for container gardens, small patches, or demonstrative setups. For a full lawn, you can use the same controller with a larger pump by adding an external relay—skills you’ll gain from this build.
Lawn — Soil moisture sensor triggers relay pump when dry. LCD shows live moisture. Hysteresis prevents 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