Introduction
A flame sensor module performs detection by capturing infrared wavelengths from flame. It can be used to detect and warn of flames.
Components
– 1*SunFounder Uno board
– 1*USB data cable
– 1*Flame sensor module
– Several jumper wires
Experimental Principle
There are several types of flame sensors. In this experiment, we will use far-infrared flame sensor. It can detect infrared light with wavelength ranging from 700nm to 1000nm. Far-infrared flame probe converts the strength changes of external infrared light into current changes. And then convert analog quantity into digital quantity.
In this experiment, we connect pin D0 to digital port 8 of SunFounder. When the Flame sensor detects flame signals, the LED will be on. Otherwise it will be off.
Experimental Procedures
Step 1: Build the circuit
| Flame Sensor | SunFounder Uno |
| D0 | 8 |
| A0 | A0 |
| VCC | 5V |
| GND | GND |
Step 2: Program (Please refer to the example code in LEARN -> Get Tutorials on our website)
Step 3: Compile the code
Step 4: Upload the sketch to the SunFounder Uno board
Now, if you ignite a lighter near the flame sensor, the LED on the flame sensor module and the LED attached to pin 13 on SunFounder board will light up.
Code
| const int analogInPin = A0; //pinA0 attach to A0 const int digitalInPin = 8; //pinD0 attach to pin8 of uno board const int ledPin = 13; //pin13 built-in ledvoid setup() { //set the pins state pinMode(digitalInPin,INPUT); pinMode(ledPin,OUTPUT); Serial.begin(9600); //initialize serial monitor }void loop() { int analogVal = analogRead(analogInPin);//read the value of A0 Serial.print(“A0: “); Serial.println(analogVal); //print to serial monitor boolean stat = digitalRead(digitalInPin);//read the value of D0 Serial.print(“D0: “); Serial.println(stat); // print to serial monitor if(stat == HIGH) { digitalWrite(ledPin,HIGH);//turn on the led } else { digitalWrite(ledPin,LOW); } } |