/*Settings:
Connect the Flora Board with a DATA-Cable!!!!
Board: choose Adafruit Flora
Programmer: „Arduino as ISP“ works fine
turn on the board with the onboard switch*/

/*You can use this sketch to randomly blink 4 leds
You can use it with our diamond swatch.*/

//You can modify this sketch:
//try to light up the leds for a longer time.
//program shorter breaks
//see if you can modify the code to randomly blink 5 leds
//try to blink more than one led at a time
//use this sketch with an RGB led

//variables
int led6 = 6; //led6 is the led connected to pin 6 of the Adafruit Flora board
int led10 = 10; //led10 is the led connected to pin 10 of the Adafruit Flora board and so on
int led12 = 12;
int led9 = 9;

// the setup routine runs once when you press reset:
void setup() {
// Initialize the leds as an outputs.
pinMode(led6, OUTPUT);
pinMode(led9, OUTPUT);
pinMode(led10, OUTPUT);
pinMode(led12, OUTPUT);
Serial.begin(9600); //This turns on the Serial monitor. This is only for checking the random values on screen!
}
// the loop routine runs over and over again forever:
void loop() {
int duration = random(0,1000);//We randomly generate values between 0 and 999.
//We will later turn on one of our leds for exactly this time.

//Randomly choose an led that will be turned on:
int led = random (0,4);//We have four leds and this function will generate the values 0, 1, 2, 3 but not 4!!!
int breaktime = random(0,500);//Randomly generate a value between 0 and 499

//print the randomly generated values onto the screen to check what these values are:
Serial.print(„Duration: „);
Serial.println(duration);
Serial.print(„LED-Pin Nr. „);
Serial.println(led);
Serial.print(„Breatime: „);
Serial.println(breaktime);
Serial.println(„——————————„);
delay(2000); //wait for 2 seconds while we read the values on the screen
//later we will take the delay out to make our program run smoothly

//we program a switch case based on the randomly generated value for our led-variable
switch (led){
case 0: digitalWrite(led6, HIGH);break;
case 1: digitalWrite(led9, HIGH);break;
case 2: digitalWrite(led10, HIGH);break;
case 3: digitalWrite(led12, HIGH);break;
}
delay(duration);//chosen led lights up for the time stored in the duration-vaariable

digitalWrite(led6, LOW); //turn off all LEDs for the time that we randomly generated for „breaktime“
digitalWrite(led9, LOW);
digitalWrite(led10, LOW);
digitalWrite(led12, LOW);
delay(breaktime);
}