DIY - Arduino Soil Moisture Sensor with OLED | KitKraft Smart Plant Monitoring

DIY – Arduino Soil Moisture Sensor with OLED | KitKraft Smart Plant Monitoring

This DIY kit helps you build a smart soil monitoring system that checks the moisture level of your plants and displays real-time results on an OLED display. The project uses an Arduino Nano to read moisture data and show animated smiley faces to indicate soil health — happy 😊 for optimal moisture, neutral 😐 for moderate levels, and sad ☹️ for dry soil. It’s an engaging hands-on project for students and hobbyists to explore Arduino sensors, displays, and smart gardening concepts.

Package Contains

• Arduino Nano – 1

• USB Cable – 1

• Soil Moisture Sensor – 1

• 0.96" OLED Display – 1

• Breadboard – 1

• Breadboard Power Module – 1

• Jumper Wires (Male-Male & Male-Female) – 1 set each

Working Principle

• The Soil Moisture Sensor measures soil’s water level and sends analog data to the Arduino Nano.

• The OLED Display shows the live moisture percentage and an animated face representing the plant’s condition.

• Based on pre-set thresholds, the Arduino updates the OLED readings dynamically — helping users decide when to water their plants.

Implementation

1. Connect the soil moisture sensor to the Arduino (A0 input pin, VCC, GND).

2. Interface the OLED display using I2C pins (A4 – SDA, A5 – SCL).

3. Upload the Arduino sketch from the KitKraft project page (link below).

4. Place the sensor into the plant’s soil and monitor real-time readings.

5. Adjust threshold values in the code for different plant types.

📘 Project Details Link:
https://www.kitkraft.in/blogs/project/arduino-soil-moisture-sensor-with-oled-kitkraft-smart-plant-monitoring

Applications

• Smart Gardening – Monitor plant health automatically.

• DIY Electronics – Learn about sensors, displays, and data visualization.

• Smart Irrigation Systems – Optimize watering with real-time soil insights.

Note: Product image is for reference only. Kit includes electronic modules and accessories as listed above.