int vaulve1 = 2;
int vaulve2 = 3;
int vaulve3 = 4;

void setup() {
  Serial.begin(115200);
  digitalWrite(vaulve1 , LOW);
  digitalWrite(vaulve2 , LOW);
  digitalWrite(vaulve3 , LOW);
  digitalWrite(5 , HIGH);
  delay(1000);
  digitalWrite(5, LOW);
}

void loop() {

}