The Arduino Automatic Smart Plant Watering Kit 2.1 is a complete system for monitoring and watering up to four plants automatically. Built around an integrated Arduino Leonardo mainboard, it uses capacitive soil moisture sensors to detect when each plant needs water and activates a pump and four-way valve to deliver water precisely where it's needed.

This version adds a real-time clock (RTC) for scheduled watering and a 0.96″ OLED display showing the time and soil moisture status. The capacitive moisture sensors are corrosion-resistant for long service life — a significant improvement over traditional resistive sensors.

Key Features

• Integrated Arduino Leonardo – Built into the mainboard, programmable via USB
• 4 Capacitive Moisture Sensors – Corrosion-resistant design for long-lasting soil monitoring
• Automatic Watering – Pump and four-way valve deliver water to plants that need it
• RTC Timing – Schedule watering cycles with the onboard real-time clock
• 0.96″ OLED Display – Shows time and soil moisture status at a glance
• Up to 4 Plants – Monitor and water four plants independently from a single system
• 12V Power Supply – Single adapter powers the entire system

Specifications

• Box Size: 25×19×5.7cm
• Water Pipe Length: 5m (4×6mm)
• Crowtail Cable Length: 1m per sensor
• Power: 12V DC adapter (included)

Ideal For

• Automated indoor and outdoor plant care
• Learning Arduino programming with a practical project
• Smart garden and greenhouse monitoring
• Holiday plant watering while you're away

Package Contents

• 1× Crowtail Smart Pump Shield v2.1
• 4× Crowtail Capacitive Moisture Sensors
• 1× 5m water pipe (4×6mm)
• 1× DC 12V adapter
• 1× DC 12V four-way valve
• 1× Water pump
• 4× 1m 4-pin Crowtail cables
• 1× Five-way pipe connector
• 1× USB cable

Resources

• User Manual v2.2 (PDF)
• Sample Code (ZIP)