This is a simple smart irrigation system using an ESP8266 (NodeMCU), an OLED display, a soil moisture sensor, and a buzzer. The system continuously monitors soil moisture levels and alerts the user when the soil is too dry by activating a buzzer and displaying a warning on the OLED screen.
Features
✅ Real-time soil moisture monitoring.
✅ OLED display with moisture percentage & graphical bar.
✅ Buzzer alert for dry soil.
✅ Compact and low-power solution.
Hardware Components
-> ESP8266 (NodeMCU)
-> Soil Moisture Sensor
-> 0.96" OLED Display (SSD1306, I2C)
-> Buzzer
-> Jumper Wires
Libraries Used
You need to install the following libraries in the Arduino IDE:
-> Adafruit SSD1306 - (Install from Library Manager)
-> Adafruit GFX - (Required for OLED display)
-> Wire.h - (Default Arduino library for I2C communication)
Wiring Connections (ESP8266 - NodeMCU)
Project Images & Demonstration
How It Works
-> The soil moisture sensor reads the moisture level of the soil.
-> The OLED display shows the percentage of soil moisture along with a visual bar indicator.
-> If the soil moisture drops below 30%, the buzzer is activated to alert the user.
-> The system updates every 2 seconds.
Future Enhancements
🔹 Add WiFi & IoT connectivity for remote monitoring.
🔹 Send notifications to a mobile app when moisture is low.
🔹 Implement automatic irrigation control by adding a relay & water pump.