Thanks!!! this was such a great help in getting my dooya blinds from aliexpress working over network.

I couldn't get the test code above to work and my sequence was 40 bits, so i modified the code quite a bit and made it much more efficient. Here is the code if anyone needs to test their code on arduino.

//Define Variables
#define SEND_DATA 4 //Data pin for RF Transmitter
#define ZERO_HIGH 363 //Delay for the high part of a 0 in microseconds
#define ZERO_LOW 726 //Delay for the low part of a 0 in microseconds
#define ONE_HIGH 726 //Delay for the high part of a 1 in microseconds
#define ONE_LOW 363 //Delay for the low part of a 1 in microseconds

void setup() {
  // put your setup code here, to run once:
Serial.begin(9600);

String code = "1100111101000001000111011011000100010001";  // Change your blinds code here
Serial.println(code);

Serial.println();

for (int i=0; i <= 10; i++) {

  int delayTime;
  for(int k=0;k<40;k++) {                  //Change k max value here (40) is mine
    char code1 = code.charAt(k);
    int highTime;
    int lowTime;
    delayTime = ((int) code1) -48;        // 48 is zero in ASCII, so 48-48 = 0 as a number.
        if (delayTime == 1){
        highTime = ONE_HIGH;
        lowTime = ONE_LOW;
      }
      else {
        highTime = ZERO_HIGH;
        lowTime = ZERO_LOW;
      }
        digitalWrite(SEND_DATA, HIGH);
        delayMicroseconds(highTime);
        digitalWrite(SEND_DATA, LOW);    
        delayMicroseconds(lowTime);

  }
  Serial.println();
  Serial.print("Round:");
  Serial.print(i);
  Serial.println();
  delay(50);
}


}

void loop() {

}