SMART SCARECROW

The Smart Scarecrow, an ingenious creation, utilizes advanced technology including a servo motor, ultrasonic sensor, buzzer, and Arduino control to safeguard crops from birds and pests. This system intelligently detects intruders and deploys scare tactics to deter them, ensuring the safety of crops and maximizing yield. Students can gain hands-on experience in engineering, automation, and agricultural innovation through this project. Additionally, this project fosters an understanding of the importance of sustainable farming practices and the role of technology in modern agriculture.

Components/Circuit:

• Servo Motor: Moves scarecrow arms or objects to simulate human presence.
• Ultrasonic Sensor: Detects nearby objects or intruders approaching the crops.
• Buzzer: Emits sound to scare away birds or pests.
• Arduino Board: Controls the system’s operations based on sensor data.

How it Works:

• Intruder Detection: The ultrasonic sensor monitors the area for approaching birds or pests.
• Scarecrow Activation: When an intruder is detected, the servo motor moves scarecrow arms or objects to create movement, simulating human presence.
• Deterrent Sound: The buzzer emits loud sounds or alarms to further scare away the intruders.
• Reset and Repeat: After a set period, the system resets, ready to detect and deter new intruders.

CODE

#include <Servo.h>

#define TRIGGER_PIN  6
#define ECHO_PIN     5
#define BUZZER_PIN   13
#define SERVO_PIN     9

Servo servoMotor;

void setup() {
  pinMode(TRIGGER_PIN, OUTPUT);
  pinMode(ECHO_PIN, INPUT);
  pinMode(BUZZER_PIN, OUTPUT);
  servoMotor.attach(SERVO_PIN);
}

void loop() {
  long duration, distance;
  digitalWrite(TRIGGER_PIN, LOW);
  delayMicroseconds(2);
  digitalWrite(TRIGGER_PIN, HIGH);
  delayMicroseconds(10);
  digitalWrite(TRIGGER_PIN, LOW);
  duration = pulseIn(ECHO_PIN, HIGH);
  distance = (duration / 2) / 29.1;

  if (distance < 50) { // Adjust distance threshold as needed
    activateScarecrow();
  } else {
    resetScarecrow();
  }
}

void activateScarecrow() {
  servoMotor.write(90); // Move servo to scarecrow position
  digitalWrite(BUZZER_PIN, HIGH); // Turn on buzzer
  delay(3000); // Scarecrow activation duration (adjust as needed)
  resetScarecrow();
}

void resetScarecrow() {
  servoMotor.write(0); // Move servo to reset position
  digitalWrite(BUZZER_PIN, LOW); // Turn off buzzer
  delay(500); // Delay before next scan (adjust as needed)
}

Advantages:

• Crop Protection: Protects crops from birds and pests, reducing damage and losses.
• Automated Deterrence: The system operates autonomously, requiring minimal human intervention.
• Cost-Effective: Provides a cost-effective alternative to traditional scarecrow methods.
• Scalable: Can be scaled up for large agricultural areas or scaled down for smaller gardens.

Applications: The Smart Scarecrow project is ideal for farmers, gardeners, and agricultural enthusiasts looking for an effective and automated solution to protect their crops. It also serves as an educational project for students to learn about sensor-based automation and pest management in agriculture.