Flame sensor experiment

Flame sensor experiment

Purpose

Fire alarm detected

Theoretical study

Flame sensor can detect fire and heat sources. The stronger the foreign infrared light, the smaller the value, the weaker the infrared light, the larger the value

Schematic diagram

Code writing

#define adpin A0
#define buzzer 2
int adbuffer = 0;
void setup() {
    
    
	pinMode(buzzer, OUTPUT);
	Serial.begin(9600);
}
void loop() {
    
    
	adbuffer = analogRead(adpin);
	Serial.print("ad = ");
	Serial.println(adbuffer);
	if (adbuffer > 20) {
    
    
		digitalWrite(buzzer, HIGH);
	}
	else {
    
    
		digitalWrite(buzzer, LOW);
	}
	delay(500);
}