//pins
int ledPin = D3;
int switchPin = D4;
int potPin = A5;
//variable to store pot readings and brightness of the LED.
int potReading = 0;
int ledBrightness = 0;
void setup()
{
pinMode(switchPin , INPUT_PULLUP);
pinMode(ledPin, OUTPUT);
Particle.variable("pot" , potReading);
}
void loop()
{
int switchState = digitalRead(switchPin);
if(switchState == LOW)
{
digitalWrite(ledPin, HIGH);
// Use analogRead to read the potentiometer reading
// This gives us a value from 0 to 4095
potReading = analogRead(potPin);
// Map this value into the PWM range (0-255)
// and store as the led brightness
ledBrightness = map(potReading, 0, 4095, 0, 255);
// fade the LED to the desired brightness
analogWrite(ledPin, ledBrightness);
//wait 1/10th of a second and then loop
delay(100);
}
else
{
digitalWrite(ledPin, LOW);
}
}
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