// Define a pin that we'll place the FSR on
// Remember to add a 10K Ohm pull-down resistor too.
int fsrPin = A0;

// Create a variable to hold the FSR reading
int fsrReading = 0;

// Define a pin that we'll place the pot on
int potPin = A5;

// Create a variable to hold the pot reading
int potReading = 0;

// Define a pin we'll place an LED on
int ledPin = D2;
//int ledBluePin = D4;

// Create a variable to store the LED brightness.
int ledBrightness = 0;
// int ledBrightness = 0;



void setup() {

  // Set up the LED for output
  pinMode(ledPin, OUTPUT);
  
// add this line... 
  //pinMode( buttonPin , INPUT_PULLUP); // sets pin as input
}



void loop() {

  // Use analogRead to read the photo cell reading
  // This gives us a value from 0 to 4095
  fsrReading = analogRead(fsrPin);

  // Map this value into the PWM range (0-255)
  // and store as the led brightness
  ledBrightness = map(fsrReading, 0, 4095, 255, 0);

  // fade the LED to the desired brightness
  analogWrite(ledPin, ledBrightness);

  // wait 1/10th of a second and then loop
  //delay(100);
  
  // First... On
 //digitalWrite(ledPin, HIGH);   
  delay(250);               

  // Now... Off
  digitalWrite(ledPin, LOW);   
  delay(250);              
  // rinse + repeat

// 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);
}