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A flame sensor can be used to sense a flame and is a High sensitivity IR receiver.
- Extremely sensitive to wavelengths between 760-1100nm
- Power supply indicator lamp
- Comparator output indicator lamp
- AO, real-time thermister voltage signal output
- DO, high/low electric level signal output
- Analog quantity output
- Threshold rollover electric level output
- Threshold adjusted by potentiometer
- Detection Angle Range: About 60 degrees
- Power Supply: 0-15 V DC
- Hole Inner Diameter: Approx. 3mm
- Size (L x W): Approx. 36 x 16mm
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| Flame Sensor |
Arduino CODE for Flame Sensor
/*
fade2
This program is similar to the fade sketch,
however, the brightness of the LED is proportional
to the intensity of the IR source on the phototransistor.
*/
int ledPin = 9; // the PWM pin that the LED is connected to
int photoCktVinPin = A5; // analog input pin used for phototrans circuit Vin
int brightness = 0; // map value between phototrans input to LED output
const int backgroundIROffset = 20; // helps remove some background IR sources
void setup() {
//declare the led pin to be an output
pinMode(ledPin, OUTPUT);
}
void loop() {
//read in the phototransistor circuit Vout level
brightness = analogRead(photoCktVinPin) + backgroundIROffset;
//map value to LED brightness scale
brightness = map(brightness, 0, 1023, 255, 0);
//set PWM value for LED source
analogWrite(ledPin,brightness);
}
MAX MSP lessons continue in Chapter 10
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