Flame Sensor Module for Arduino Projects

13 May 2023 Balmiki Mandal 0 µC - µP

Flame Sensor: Detect Fire With Arduino

Using a flame sensor with an Arduino is a great way to detect fires quickly and accurately. Flame sensors can be used to detect the presence of various types of flames, including those from candles, lighters, matches, cigarettes, and other small sources of flame. This type of smoke detector is perfect for home automation projects, DIY Arduino projects, or even a commercial fire alarm system.

What is a Flame Sensor?

A flame sensor is an electronic device that detects the presence of a flame. It works by comparing the intensity of light it receives with a preset threshold. If the intensity of the received light is greater than the preset threshold, then the flame sensor will trigger an alarm. This makes flame sensors particularly suitable for applications where a rapid response to potential fire sources is necessary.

How Does a Flame Sensor Work?

A flame sensor has an optical light sensor at its core that measures the intensity of light. This light sensor is connected to an amplifier which amplifies the signal to a level that can be used by a microcontroller or other type of application. When a flame is detected, the amplifier sends a signal to trigger an alarm.

Advantages of Using a Flame Sensor With an Arduino

Using a flame sensor with an Arduino has several advantages over traditional smoke detectors. Because the flame sensor is detecting the intensity of the flame itself, it can respond much faster than a traditional smoke detector which can take several minutes to detect smoke. Additionally, the flame sensor is much more sensitive, meaning it is able to detect small fires and flames that might otherwise go unnoticed by a traditional smoke detector.

Overall, using a flame sensor with an Arduino is a great way to quickly and accurately detect fires and other sources of flames in your home or workplace. Whether you need to create a DIY Arduino fire alarm, or are setting up a commercial-grade smoke detection system, the flame sensor is a reliable and cost-effective solution.

 

Here is an example source code for a flame sensor using Arduino:

const int flamePin = A0; // the flame sensor is connected to analog pin A0
const int ledPin = 13; // the LED is connected to digital pin 13

void setup() {
  pinMode(flamePin, INPUT); // set the flame sensor pin as an input
  pinMode(ledPin, OUTPUT); // set the LED pin as an output
  Serial.begin(9600); // initialize serial communication at 9600 baud rate
}

void loop() {
  int flameValue = analogRead(flamePin); // read the analog value from the flame sensor
  Serial.println(flameValue); // print the flame value to the serial monitor for debugging

  if (flameValue > 200) { // if the flame value is above a certain threshold
    digitalWrite(ledPin, HIGH); // turn on the LED
  } else {
    digitalWrite(ledPin, LOW); // turn off the LED
  }

  delay(100); // wait for 100 milliseconds before reading the flame sensor again
}

In this example, a flame sensor is connected to analog pin A0 and a LED is connected to digital pin 13. The setup() function sets the flame sensor pin as an input and the LED pin as an output. It also initializes the serial communication at a baud rate of 9600 for debugging purposes.

In the loop() function, the analog value from the flame sensor is read using the analogRead() function and stored in the flameValue variable. The flame value is then printed to the serial monitor for debugging using the Serial.println() function.

If the flame value is above a certain threshold of 200 (which can be adjusted based on the specific sensor used), the LED is turned on using the digitalWrite() function with a HIGH value. Otherwise, the LED is turned off using a LOW value.

The delay() function is used to wait for 100 milliseconds before reading the flame sensor again. This can also be adjusted based on the specific needs of the project.

BY: Balmiki Mandal

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