void setup() {
  // put your setup code here, to run once:
Serial.begin(115200);
if(Serial.println("serial is not ok");
pinMode(3. OUTPUT);
pinMode(4. OUTPUT)
pinMode(5, OUTPUT);
void loop() {
  // put your main code here, to run repeatedly:
digitalWrite(3 HIGH);
Serial.println("red in on");
delay(6000
);
digitalWrite(3 LOW);
Serial.println("red in off");
delay(6000);
digitalWrite(4 HIGH);
Serial.println("yellow in on");
delay(6000);
digitalWrite(4.LOW);
Serial.println("yellow in off");
delay(6000);



}