Cảm biến bụi Sharp GP2Y1010AU0F Compact optical Dust Sensor - DFROBOT

GIỚI THIỆU

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 sample code:

/*
 Standalone Sketch to use with a Arduino UNO and a
 Sharp Optical Dust Sensor GP2Y1010AU0F
*/
 
int measurePin = 0; //Connect dust sensor to Arduino A0 pin
int ledPower = 2;   //Connect 3 led driver pins of dust sensor to Arduino D2
 
int samplingTime = 280;
int deltaTime = 40;
int sleepTime = 9680;
 
float voMeasured = 0;
float calcVoltage = 0;
float dustDensity = 0;
 
void setup(){
  Serial.begin(9600);
  pinMode(ledPower,OUTPUT);
}
 
void loop(){
  digitalWrite(ledPower,LOW); // power on the LED
  delayMicroseconds(samplingTime);
 
  voMeasured = analogRead(measurePin); // read the dust value
 
  delayMicroseconds(deltaTime);
  digitalWrite(ledPower,HIGH); // turn the LED off
  delayMicroseconds(sleepTime);
 
  // 0 - 5V mapped to 0 - 1023 integer values
  // recover voltage
  calcVoltage = voMeasured * (5.0 / 1024.0);
 
  // linear eqaution taken from http://www.howmuchsnow.com/arduino/airquality/
  // Chris Nafis (c) 2012
  dustDensity = 0.17 * calcVoltage - 0.1;
 
  Serial.print("Raw Signal Value (0-1023): ");
  Serial.print(voMeasured);
 
  Serial.print(" - Voltage: ");
  Serial.print(calcVoltage);
 
  Serial.print(" - Dust Density: ");
  Serial.println(dustDensity); // unit: mg/m3
 
  delay(1000);
}

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