How do you plan to solve it? Using wokwi simulator to place the parts that base on the diagram and also to test if working
 
 
void setup() {
  // put your setup code here, to run once:
pinMode(LED_BUILTIN,OUTPUT);
}
void loop() {
  // put your main code here, to run repeatedly:
digitalWrite(LED_BUILTIN, HIGH);
delay(400);
digitalWrite(LED_BUILTIN, LOW);
delay(800);
}/*Paste your code here*/
Add video of the output (know more)

Add a photo of your hardware showing the output.