FCM#92 - Chicken Coop

// include the servo library
#include <Servo.h>

Servo myServo;  // create a servo object

int light;          // LDR value - how light/dark is it

int sunUp=650;      // LDR setting for daytime
int sunDown=200;    // LDR setting for night time

int coopOpen=180;   // Servo=180' - open coop
int coopClosed=0;   // Servo=0' - close coop

int coopDanger=5;   // Red LED pin - signifies coop open
int coopSafe=4;     // Green LED pin - signifies coop closed

//  ----

void setup() {
  myServo.attach(9); // attaches the servo on pin 9 to the servo object
  myServo.write(0);  // set servo to zero for initial position (coop closed)

  pinMode(coopDanger,OUTPUT);  // Red LED pin is an output
  pinMode(coopSafe,OUTPUT);    // Green LED pin is an output

  digitalWrite(coopDanger, LOW);  // Set Red LED off on start
  digitalWrite(coopSafe, HIGH);   // Set Green LED on at start (coop is closed on start)

  Serial.begin(9600);             // open a serial connection to your computer
}

void loop() {
  light=analogRead(A1);           // read LDR

  // problem is that the servo is always on when door is held open
  if (light < sunUp){                   // night time
      myServo.write(coopClosed);        // close coop
      digitalWrite(coopDanger, LOW);    // red LED off
      digitalWrite(coopSafe, HIGH);     // light green LED
      delay(2000);                      // 2sec delay before moving servo
  }

  // problem is that the servo is always on when door is held open
  if (light > sunDown){                 // day time
      myServo.write(coopOpen);          // open coop
      digitalWrite(coopDanger, HIGH);   // red LED on
      digitalWrite(coopSafe, LOW);      // green LED off
      delay(2000);                      // 2sec delay before moving servo
  }

  // print light level
  Serial.print(", light: ");
  Serial.println(light);

  // wait for the servo to get there
  delay(50);

}