void setup() {
 Serial.begin(115200);
pinMode(32,OUTPUT);
pinMode(26,OUTPUT);
pinMode(13,OUTPUT);
}
void loop() {
digitalWrite(32, HIGH);
  delay(3000);
digitalWrite(32, LOW);
digitalWrite(26, HIGH);
delay(3000);
digitalWrite(26, LOW);
digitalWrite(13, HIGH);
delay(3000);
digitalWrite(13,LOW);
}