ArduinoCoffin.c

#define RELAY_ON 0
#define RELAY_OFF 1

#define Relay_1  2  // Arduino Digital I/O pin number
#define Relay_2  3
#define Relay_3  4
#define Relay_4  5
#define Relay_5  6 // Smoke
#define Relay_6  7
#define Relay_7  8
#define Relay_8  9

const int IR_Pin = 10;
int IR_State = 0;

void setup() {
  //-------( Initialize Pins so relays are inactive at reset)----
  digitalWrite(Relay_1, RELAY_OFF);
  digitalWrite(Relay_2, RELAY_OFF);
  digitalWrite(Relay_3, RELAY_OFF);
  digitalWrite(Relay_4, RELAY_OFF);
  digitalWrite(Relay_5, RELAY_OFF);
  digitalWrite(Relay_6, RELAY_OFF);
  digitalWrite(Relay_7, RELAY_OFF);
  digitalWrite(Relay_8, RELAY_OFF);


  //---( THEN set pins as outputs )----
  pinMode(Relay_1, OUTPUT);
  pinMode(Relay_2, OUTPUT);
  pinMode(Relay_3, OUTPUT);
  pinMode(Relay_4, OUTPUT);
  pinMode(Relay_5, OUTPUT);
  pinMode(Relay_6, OUTPUT);
  pinMode(Relay_7, OUTPUT);
  pinMode(Relay_8, OUTPUT);
  pinMode(IR_Pin, INPUT);

  delay(4000); //Check that all relays are inactive at Reset

}//--(end setup )---

void loop() {
  Serial.begin(9600);
  // Only allow us to run our open function if the coffin is open
  boolean coffin_open = false;
  boolean taskRunning = false;

  IR_State = digitalRead(IR_Pin);
  
  
  if (IR_State == HIGH) {
    
    /*  Runs this script whenever the IR thing is active. 
     *  It is hard to tell when we want to run this without seeing how sensitive the IR sensor is,
     *  this might need to be changed later on
     */
    // Open Coffin
    // Smoke On
    digitalWrite(Relay_5, RELAY_ON);

    // Door Open
    digitalWrite(Relay_1, RELAY_ON);
    delay(3000);
    digitalWrite(Relay_1, RELAY_OFF);

    // Head Rise
    digitalWrite(Relay_2, RELAY_ON);
    delay(3500);
    digitalWrite(Relay_2, RELAY_OFF);

    // Close Coffin
    // Smoke Off
    digitalWrite(Relay_5, RELAY_OFF);
    delay(6000);

    // Lower Head
    digitalWrite(Relay_3, RELAY_ON);
    delay(3500);
    digitalWrite(Relay_3, RELAY_OFF);

    // Close Door
    digitalWrite(Relay_4, RELAY_ON);
    delay(3000);
    digitalWrite(Relay_4, RELAY_OFF);

    // Wait 3 seconds before open_coffin can be called again. (optional)
    delay(3000);
  }
}