// Defining pins
// Define a pin that we'll place the photo cell on
int photoCellPin = A0;
// Define a pin that we'll place the potentiometer on
int potPin = A5;
// Define a pin that we'll place the LED on
int ledPin = D2;
// Defining variables
// Create a variable to hold the light reading
int photoCellReading = 0;
// Create a variable to hold the pot reading
int potReading = 0;
// Create a variable to hold the LED reading
int ledBrightness = 0;
void setup() {
// Set up the LED for output
pinMode(ledPin, OUTPUT);
// Create a cloud variable of type integer called 'light' mapped to photoCellReading
Particle.variable("light", &photoCellReading, INT);
// Create a cloud variable of type integer called 'potReading'
Particle.variable("potReading", potReading);
}
void loop() {
// Use analogRead to read the photo cell reading, value from 0 to 4095
photoCellReading = analogRead(photoCellPin);
// Use analogRead to read the potentiometer reading
potReading = map(analogRead(potPin), 0,4095, 0, 255);
// Map this value into the PWM range (0-255)
ledBrightness = map(photoCellReading, 0, 4095, 0, 255);
// Fade the LED to the desired brightness
if(photoCellReading < 2000) {
analogWrite(ledPin, potReading);
} else {
digitalWrite(ledPin, LOW);
}
delay(100);
}
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