int blue = 12;
int red= 6;
int green =10;
void setup(){
pinMode(blue,OUTPUT);
pinMode(blue,OUTPUT);
pinMode(blue,OUTPUT);
Serial.begin(9600);
}
void loop(){
int val=analogRead(A0);
float volt= val*5.0/1023.0;
//0.01T+0.5 =V
float temp= (volt-0.5)*100.0;
if (temp<20){
digitalWrite(blue,HIGH);
digitalWrite(green,LOW);
digitalWrite(red,LOW);
}
else if (temp<30){
digitalWrite(blue,LOW);
digitalWrite(green,HIGH);
digitalWrite(red,LOW);
}
else{
digitalWrite(blue,LOW);
digitalWrite(green,LOW);
digitalWrite(red,HIGH);
}
Serial.print("Temperature is");
Serial.println( temp);
}