نظام الحماية من الغرق – البرنامج الصيفي ماهر 2019

#define echoPin 7
#define trigPin 8   
#define relay1 2
#define relay2 3


long duration;

long distance;



void setup() 

{

  Serial.begin(9600);

  pinMode (echoPin, INPUT);

  pinMode (trigPin, OUTPUT);

pinMode (relay1, OUTPUT);
pinMode (relay2, OUTPUT);
}



void loop() 

{
 digitalWrite(trigPin, LOW);
 delayMicroseconds(2);
 digitalWrite(trigPin, HIGH);
 delayMicroseconds(10);
 digitalWrite(trigPin,LOW);
 duration = pulseIn (echoPin, HIGH);
 distance = duration/58.2;
 Serial.println (distance);
 delay(50);

 if(distance<=20){
  digitalWrite(relay1,HIGH);
  delay(4000);
  digitalWrite(relay1,LOW);
  delay(3000);
  digitalWrite(relay2,HIGH);
  delay(4000);
  digitalWrite(relay2,LOW);
 
  
  
  }

}