Fire alarm

Buzzer

Arduino UNO

9V battery (generic)

flame sensor

Jumper wires (generic)

Arduino IDE

SparkFun Solder-able Breadboard - Mini

9V Battery Clip

<pre ><code >const int flameSens = A0;//set flame sensor to pin A0 const int buzzer = 8;//set speaker to pin 8 int flameVal;//set up the data variable for the sensor void setup(){ Serial.begin(9600);//begin the serial monitor pinMode(buzzer, OUTPUT);//define the speaker as an output pinMode(flameSens, INPUT);//define flame sensor as an input } void loop() { int flameVal = analogRead(flameSens);//read the sensor value of flame sensor if (flameVal < 1023){//if the data us less than 1023 then set off an alarm digitalWrite(buzzer, HIGH); } else{ digitalWrite(buzzer, LOW);// if else don't set off alarm } Serial.println(flameVal);//print the data to the serial monitor } </code></pre>

diagram

Fire alarm

Less cost and mas use fire alarm