gp2y1010au0f.ino

int measurePin = 0; //Connect dust sensor to Arduino A0 pin
int ledPower = 3;   //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.print(dustDensity * 1000); // 這裡將數值呈現改成較常用的單位( ug/m3 )
  Serial.println(" ug/m3 ");
  delay(1000);
}