Plant Monitor

// Define the Pin the Temperature sensor is on
int tempPin = A0;

// Create a variable that will store the temperature value
double temperature = 0.0;
double temperatureF = 0.0;

// Define a pin that we'll place the photo cell on
// Remember to add a 10K Ohm pull-down resistor too.
int photoCellPin = A1;

// Create a variable to hold the light reading
int photoCellReading = 0;

// Define a pin we'll place an LED on
int ledPin = D0;

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

void setup()
{
  // Register a Spark variable here
  Spark.variable("temperature", &temperature, DOUBLE);
  Spark.variable("temperatureF", &temperatureF, DOUBLE);

  // Connect the temperature sensor to A0 and configure it
  // to be an input
  pinMode(tempPin, INPUT);

    // Set up the LED for output
  pinMode(ledPin, OUTPUT);

  // Create a cloud variable of type integer
  // called 'light' mapped to photoCellReading
  Spark.variable("light", &photoCellReading, INT);

  // Create a cloud variable of type integer
  // called 'temp' mapped to temperatureF
  Spark.variable("temp", &temperatureF, DOUBLE);

}

void loop()
{
  // Keep reading the sensor value so when we make an API
  // call to read its value, we have the latest one
  int reading = analogRead(tempPin);

  // The returned value from the Core is going to be in the range from 0 to 4095
  // Calculate the voltage from the sensor reading
  double voltage = (reading * 3.3) / 4095.0;

  // Calculate the temperature and update our static variable
  temperature = (voltage - 0.5) * 100;

  // Now convert to Farenheight
  temperatureF = ((temperature * 9.0) / 5.0) + 32.0;

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

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

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

  //blink if cloud variables "light" and "temp" have logical values
if (photoCellReading >= 0 and photoCellReading <= 4095 and temperature > 0 and temperature < 100 ) 
  // First... On
  digitalWrite(ledPin, HIGH);   // Turn ON the LED pins
  delay(1000);               // Wait for 1000mS = 1 second

  // Now... Off
  digitalWrite(ledPin, LOW);   // Turn OFF the LED pins
  delay(1000);               // Wait for 1000mS = 1 second
  // rinse + repeat

  // wait one second and then loop
  delay(1000);
}