sensors.ino

#include<Servo.h>

Servo myservo;
int count = 0;
void setup()
{
  myservo.attach(5);
  Serial.begin(9600);
  pinMode(A2,INPUT);
  pinMode(A3,INPUT);
  pinMode(A4,INPUT);
  pinMode(A5,INPUT);
  pinMode(3,INPUT);
  pinMode(7,INPUT);
  pinMode(2,OUTPUT);

  pinMode(2,OUTPUT);
  pinMode(4,OUTPUT);

}

void loop()
{
  int status =  digitalRead(3);
  int light = analogRead(A5);
  int temp = analogRead(A4);
  int soil = analogRead(A3);
  int pot = analogRead(A2);

  int degree = map(pot,0,1023,0,180);
  myservo.write(degree);

  digitalWrite(2,LOW);
  delayMicroseconds(2);
  digitalWrite(2,HIGH);
  delayMicroseconds(10);
  digitalWrite(2,LOW);
  int time = pulseIn(7,HIGH);
  float distance = time/29/2;
  Serial.print("Distance = ");
  Serial.println(distance);
  alert(distance);

  Serial.print("Light = "); Serial.println(light);
  Serial.print("Temp = "); Serial.println(temp);
  Serial.print("Soil = "); Serial.println(soil);

  if(status)
  {
    digitalWrite(2,HIGH);
    Serial.println("LED ON");
  }
  else{
    digitalWrite(2,LOW);
    Serial.println("LED OFF");
  }
  if(soil <80)
  {
    digitalWrite(4,HIGH);
  }
  else
  {
    digitalWrite(4,LOW);
  }

  delay(100);

}

void alert(int distance)
{
  int t = distance/20;
    for (int i = 0; i < 50; i++) {  // Generate 50 pulses
      digitalWrite(8, HIGH);  // Turn ON buzzer
      delay(t);  // ON duration (5ms)
      digitalWrite(8, LOW);   // Turn OFF buzzer
      delay(t);  // OFF duration (5ms)
    }

}