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//Photoresistor exercise 2:
//Turn the light on and off when reaches certain levels.
int photoCellPin = A0;
int photoCellReading = 0; //create a variable to hold the light reading
int ledPin = D2;
int ledBrightness = 0; //create a variable to store the LED brightness
void setup() {
//setup the LED for output
pinMode(ledPin, OUTPUT);
Particle.variable("light", &photoCellReading, INT); //create a cloud variable of type integer
}
void loop() {
digitalWrite(ledPin, HIGH);
photoCellReading = analogRead(photoCellPin); //read the photo cell reading, 0-4095
int ledBrightness = map(photoCellReading, 0, 4095, 0, 255); //map this value into the PWM range (0-255) and store as led brightness
int lightreading = map (600,0,4095,0,255);
if(ledBrightness >= lightreading){
analogWrite(ledPin, ledBrightness); //fade the led to the desired brightness
}else{
digitalWrite (ledPin, LOW);
}
delay(100); //wait 1/10th of a second and then loop
}
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