int randomNum() {
  int number = random(1, 7);
  return number;
}

int btn1 = 22;

int led1 = 21;
int led2 = 19;
int led3 = 18;
int led4 = 5;
int led5 = 17;
int led6 = 4;
int led7 = 2;

void setup() {
  Serial.begin(115200);
  pinMode(btn1, INPUT);
  
  pinMode(led1, OUTPUT);
  pinMode(led2, OUTPUT);
  pinMode(led3, OUTPUT);
  pinMode(led4, OUTPUT);
  pinMode(led5, OUTPUT);
  pinMode(led6, OUTPUT);
  pinMode(led7, OUTPUT);
}

void loop() {
  if (digitalRead(btn1) != HIGH) {

    digitalWrite(led1, HIGH);
    digitalWrite(led2, HIGH);
    digitalWrite(led3, HIGH);
    digitalWrite(led4, HIGH);
    digitalWrite(led5, HIGH);
    digitalWrite(led6, HIGH);
    digitalWrite(led7, HIGH);
 
    int number = random(1,7);
    Serial.println(number);
    delay(1000);
    switch (number) {
      case 1:
        digitalWrite(led1, HIGH);
        digitalWrite(led2, HIGH);
        digitalWrite(led3, HIGH);
        digitalWrite(led4, LOW);
        digitalWrite(led5, HIGH);
        digitalWrite(led6, HIGH);
        digitalWrite(led7, HIGH);
        break;
      case 2:
        digitalWrite(led1, LOW);
        digitalWrite(led2, HIGH);
        digitalWrite(led3, HIGH);
        digitalWrite(led4, HIGH);
        digitalWrite(led5, HIGH);
        digitalWrite(led6, HIGH);
        digitalWrite(led7, LOW);
        break;
      case 3:
        digitalWrite(led1, LOW);
        digitalWrite(led2, HIGH);
        digitalWrite(led3, HIGH);
        digitalWrite(led4, LOW);
        digitalWrite(led5, HIGH);
        digitalWrite(led6, HIGH);
        digitalWrite(led7, LOW);
        break;
      case 4:
        digitalWrite(led1, LOW);
        digitalWrite(led2, HIGH);
        digitalWrite(led3, LOW);
        digitalWrite(led4, HIGH);
        digitalWrite(led5, LOW);
        digitalWrite(led6, HIGH);
        digitalWrite(led7, LOW);
        break;
      case 5:
        digitalWrite(led1, LOW);
        digitalWrite(led2, HIGH);
        digitalWrite(led3, LOW);
        digitalWrite(led4, LOW);
        digitalWrite(led5, LOW);
        digitalWrite(led6, HIGH);
        digitalWrite(led7, LOW);
        break;
      case 6:
        digitalWrite(led1, LOW);
        digitalWrite(led2, LOW);
        digitalWrite(led3, LOW);
        digitalWrite(led4, HIGH);
        digitalWrite(led5, LOW);
        digitalWrite(led6, LOW);
        digitalWrite(led7, LOW);
        break;  

        delay(500);

    
    }
  }
}