void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
pinMode(26,OUTPUT);
pinMode(25,OUTPUT);
pinMode(22,OUTPUT);
}

void loop() {
  digitalWrite(26, HIGH);
  delay(3000);
  digitalWrite(26, LOW);
  digitalWrite(25, HIGH);
  delay(3000);
  digitalWrite(25, LOW);
  digitalWrite(22, HIGH);
  delay(3000);
  digitalWrite(22, LOW);
  
}