#include <SoftwareSerial.h>

// ***

// *** Define the RX and TX pins. Choose any two

// *** pins that are unused. Try to avoid D0 (pin 5)

// *** and D2 (pin 7) if you plan to use I2C.

// ***

#define RX   1    // *** D3, Pin 2

#define TX   0  // *** D4, Pin 3

 

// These constants won't change.  They're used to give names

 

// ***

// *** Define the software based serial port. Using the

// *** name Serial so that code can be used on other

// *** platforms that support hardware based serial. On

// *** chips that support the hardware serial, just

// *** comment this line.

// ***

SoftwareSerial Serial(RX, TX);

 

 

 

void setup() {

  // initialize serial communications at 9600 bps:


   pinMode(2, OUTPUT);

   pinMode(3, OUTPUT);
    pinMode(0, OUTPUT);
}

 

 

 

void loop()

{

 

    for (int i = 0; i < 30; ++i) {
digitalWrite(2, HIGH);
      digitalWrite(3, HIGH);
   digitalWrite(0, HIGH);
      delayMicroseconds(2000); //
 
      digitalWrite(3, LOW);
 digitalWrite(0, LOW);
      delayMicroseconds(18000);

    }

 

    delay(3000);

 

    for (int i = 0; i < 90; ++i) {
digitalWrite(2, HIGH);
      digitalWrite(3, HIGH);
 digitalWrite(0, HIGH);
      delayMicroseconds(1500);

      digitalWrite(3, LOW);
  digitalWrite(0, LOW);
      delayMicroseconds(18500);

    }

    delay(3000);

    for (int i = 0; i < 30; ++i) {
digitalWrite(2, HIGH);
      digitalWrite(3, HIGH);
   digitalWrite(0, HIGH);
      delayMicroseconds(2000); //
 digitalWrite(2, LOW);
      digitalWrite(3, LOW);
 digitalWrite(0, LOW);
      delayMicroseconds(18000);

    }

    delay(3000); 

    
    for (int i = 0; i < 90; ++i) {
digitalWrite(2, HIGH);
      digitalWrite(3, HIGH);
 digitalWrite(0, HIGH);
      delayMicroseconds(1500);

      digitalWrite(3, LOW);
  digitalWrite(0, LOW);
      delayMicroseconds(18500);

    }

  delay(3000); 
    
    
    for (int i = 0; i < 30; ++i) {
digitalWrite(2, HIGH);
      digitalWrite(3, HIGH);
   digitalWrite(0, HIGH);
      delayMicroseconds(2000); //
 digitalWrite(2, LOW);
      digitalWrite(3, LOW);
 digitalWrite(0, LOW);
      delayMicroseconds(18000);

    }

    delay(3000); 

        
    for (int i = 0; i < 90; ++i) {
digitalWrite(2, HIGH);
      digitalWrite(3, HIGH);
 digitalWrite(0, HIGH);
      delayMicroseconds(1500);

      digitalWrite(3, LOW);
  digitalWrite(0, LOW);
      delayMicroseconds(18500);

    }

    
  
    delay(3000); 
    
        for (int i = 0; i < 30; ++i) {
digitalWrite(2, HIGH);
      digitalWrite(3, HIGH);
   digitalWrite(0, HIGH);
      delayMicroseconds(2000); //

      digitalWrite(3, LOW);
 digitalWrite(0, LOW);
      delayMicroseconds(18000);

    }

    delay(3000); 

        for (int i = 0; i < 90; ++i) {
digitalWrite(2, HIGH);
      digitalWrite(3, HIGH);
 digitalWrite(0, HIGH);
      delayMicroseconds(1500);
  digitalWrite(2, LOW);
      digitalWrite(3, LOW);
  digitalWrite(0, LOW);
      delayMicroseconds(18500);

    }

 delay(900000);

}