// left side pin 5, right pin 6

int i = 0;
int selectedPattern = 0;
void setup() {
  pinMode(11, INPUT_PULLUP);

Serial.begin(9600);

digitalWrite(5, HIGH);
digitalWrite(6, HIGH);
delay(300);
digitalWrite(5, LOW);
digitalWrite(6, LOW);
delay(300);


}

void loop() {


  Serial.println(selectedPattern);

if(digitalRead(11) == LOW)
{
  selectedPattern = selectedPattern + 1;
  delay(200L);
}

if(selectedPattern == 1)
{
  pattern1();
}
if(selectedPattern == 2)
{
  pattern2();
}
if(selectedPattern == 5)
{
  selectedPattern = 0;
}



}


void pattern1() {
for (int i=0; i < 5; i++) {
leftOn();
delay(50);
leftOff();
delay(50);
}

for (int i=0; i < 5; i++) {
rightOn();
delay(50);
rightOff();
delay(50);
}
}

void pattern2() {
for (int i=0; i < 5; i++) {
leftOn();
delay(50);
rightOn();
delay(50);
leftOff();
}

for (int i=0; i < 5; i++) {
leftOn();
delay(50);
rightOff();
delay(50);
leftOff();
}
}










void leftOn() {
  digitalWrite(5, HIGH);
}

void leftOff() {
  digitalWrite(5, LOW);
}

void rightOn() {
  digitalWrite(6, HIGH);
}

void rightOff() {
  digitalWrite(6, LOW);
}