Spark Core IFTTT and LDR Sample

ifttt-ldr.ino

#define APP_DELAY           (15 * 60 * 1000)
#define MAX_LIGHT_VALUE     12
#define LDR_PIN             A7

// Sensor reading
int reading = 0;
char szValue[MAX_LIGHT_VALUE];

void setup(void){
    Serial.begin(9600);   
    
    pinMode(LDR_PIN, INPUT);
}
 
void loop(void) {
    // Read and map sensor value
    reading = map(analogRead(LDR_PIN), 0, 4095, 0, 100);
 
    // Let's debug
    Serial.print("Reading: ");
    Serial.println(reading);
 
    // Publish Sensor value
    sprintf(szValue, "%d", reading);
    
    Spark.publish("LDR-LIGHTLEVEL", szValue, 60, PRIVATE);
    
    // Delay application
    delay(APP_DELAY);
}