//Practice exercise: Using a potentiometer

int potPin = A5;
int potReading = 0; //create a variable to hold the pot reading

int ledPin = D2;
int ledBrightness = 0; //create a variable to store the LED brightness


void setup() {

    pinMode(ledPin,OUTPUT); //set pin as output
    
    Spark.variable("pot", potReading ); //create a cloud variable of type integer
}

void loop() {
    
    //use analogRead to read the potentiometer reading
    //This gives us a value rom 0 to 4095
    
    potReading = analogRead(potPin); //0-4095
    
    
        
    //Map this value into the PWM range (0-255)
    //And store as the led brightness
    int ledBrightness = map(potReading,0,4095,0,255);
    
    //fade the LED to the desired brightness
    analogWrite(ledPin, ledBrightness ); //0-255


    //wait 1/10th of a second and then loop
    delay(100);
}