LM35 Temperature Sensor with Arduino

 

Arduino Code :

 

float temp;

 float farh;

 int tempPin = A0;

 void setup()

 {

 Serial.begin(9600);

 }
 void loop()

 {

 temp = analogRead(tempPin);

 temp = temp * 0.48828125;

 farh= (temp*9)/5 + 32;

 Serial.print("TEMPRATURE = ");

 Serial.print(temp);

 Serial.print(" C\t");

 Serial.print("TEMPRATURE = ");

 Serial.print(farh);

 Serial.print(" F");
 Serial.println();

 delay(1000);

 } 

 

LPG gas Leakage Detector

 

Check Video

 

 

Code :

 

 

 

 

  void setup()
{
  pinMode(13,OUTPUT);
  pinMode(8,OUTPUT);
  Serial.begin(9600);
}

void loop() {
 
  int val = analogRead(A3);
    if(val>400)
    {
    digitalWrite(13,HIGH);
    digitalWrite(8,HIGH);
    Serial.println(val);
    delay(40);
   
  }
  else
  {
   
    digitalWrite(13,LOW);
    digitalWrite(8,LOW);
    Serial.println("no Smoke");
    delay(10);
   
    }
 

}




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