Blue_Iris_Program.ino

int led = 11; //Built in led on Teensy 2.0
int camera1 = 1;
int camera2 = 2;
int camera3 = 3;
int camera4 = 4;
int camera5 = 24;
int camera6 = 5;
int camera7 = 6;
int inputByte = -1;

void setup()
{
  Serial.begin(9600); //Start our serial connection

  pinMode(led, OUTPUT); //Declare our pins as outputs.
  pinMode(camera1, OUTPUT);
  pinMode(camera2, OUTPUT);
  pinMode(camera3, OUTPUT);
  pinMode(camera4, OUTPUT);
  pinMode(camera5, OUTPUT);
  pinMode(camera6, OUTPUT);
  pinMode(camera7, OUTPUT);
}

void loop()
{
  inputByte = Serial.read(); //Read the serial buffer
  if(inputByte == -1) //If the byte was -1, there is no activity and we can turn every output off and blink the LED fast.
  {
    digitalWrite(camera1, LOW);
    digitalWrite(camera2, LOW);
    digitalWrite(camera3, LOW);
    digitalWrite(camera4, LOW);
    digitalWrite(camera5, LOW);
    digitalWrite(camera6, LOW);
    digitalWrite(camera7, LOW);
    digitalWrite(led, HIGH);
    delay(50);
    digitalWrite(led, LOW);
    delay(50);
  }
  else //Otherwise, there was some activity
  {
    if (inputByte == '0') //One corresponds to digital output zero on blue iris.
    {
      digitalWrite(camera1, HIGH); //We set the pin designated as camera 1 high to indicate a camera being triggered by blue iris.
      digitalWrite(led, HIGH); //We also turn on the onboard led for debugging purposes.
    }
    else if (inputByte == '1') //One corresponds to output two, and so on.
    {
      digitalWrite(camera2, HIGH);
      digitalWrite(led, HIGH);
    }
    else if (inputByte == '2')
    {
      digitalWrite(camera3, HIGH);
      digitalWrite(led, HIGH);
    }
    else if (inputByte == '3')
    {
      digitalWrite(camera4, HIGH);
      digitalWrite(led, HIGH);
    }
    else if (inputByte == '4')
    {
      digitalWrite(camera5, HIGH);
      digitalWrite(led, HIGH);
    }
    else if (inputByte == '5')
    {
      digitalWrite(camera6, HIGH);
      digitalWrite(led, HIGH);
    }
    else if (inputByte == '6')
    {
      digitalWrite(camera7, HIGH);
      digitalWrite(led, HIGH);
    }
    delay(100); //Blue iris sends the triggers about every 100ms. This lets us delay approx. until the next trigger, resulting in a continuous output until triggers stop.
  }
}