#define Led1 23
#define Led2 22
#define Led3 21
#define Led4 19
#define Led5 18
#define Led6 5
#define Led7 4
#define Led8 2


void setup() {
  // put your setup code here, to run once:
  pinMode(Led1, OUTPUT);
  pinMode(Led2, OUTPUT);
  pinMode(Led3, OUTPUT);
  pinMode(Led4, OUTPUT);
  pinMode(Led5, OUTPUT);
  pinMode(Led6, OUTPUT);
  pinMode(Led7, OUTPUT);
  pinMode(Led8, OUTPUT);
  Serial.begin(115200);
}

void loop() {
  // put your main code here, to run repeatedly:
  digitalWrite(Led1, HIGH);
  delay(500);
  digitalWrite(Led1, LOW);
  delay(500);
  digitalWrite(Led2, HIGH);
  delay(500);
  digitalWrite(Led2, LOW);
  delay(500);
  digitalWrite(Led3, HIGH);
  delay(500);
  digitalWrite(Led3, LOW);
  delay(500);
  digitalWrite(Led4, HIGH);
  delay(500);
  digitalWrite(Led4, LOW);
  delay(500);
  digitalWrite(Led5, HIGH);
  delay(500);
  digitalWrite(Led5, LOW);
  delay(500);
  digitalWrite(Led6, HIGH);
  delay(500);
  digitalWrite(Led6, LOW);
  delay(500);
  digitalWrite(Led7, HIGH);
  delay(500);
  digitalWrite(Led7, LOW);
  delay(500);
  digitalWrite(Led8, HIGH);
  delay(500);
  digitalWrite(Led8, LOW);
  delay(500);
}