An Arduino-based application that automates soil irrigation, by continuously measuring soil humidity value. The water-source is controlled based on the real-time reading of the soil humidity sensor.

• 1 Arduino-Uno Board.
• 1 Soil Humidity Sensor.
• 2-Channel Relay Module.
• 1 Solenoid Water Valve.
• 12V - 2A Adabtor.
• Motor.
• Red,Green,Blue LEDs.
• 1 Breadboard.
• Jumper Wires.

The overall idea is to measure the soil humidity value using soil humidity sensor and send the value to the arduino :

• If the value is below certain value (Red LED is ON) --> Arduino controls the relay to open the solenoid valve, and water flows until retaining the desired humidity value.
• While the humidity value equals the desired value (Green LED is ON) --> Nothing happens, solenoid valve remains closed and water does not passes.
• If the humidity value is greater than certain value - over irrigation- (Blue LED is ON) --> Solenoid valve remains closed but the blue LED notifies the user of over irrigation.