@petewill what I'm trying to do is send 5 codes. Right now the 433 transmitter will broadcast the codes together, one after the other without any delay which the receiver won't recognize.

I already have a written program to control these blinds with a stepper motor to open and close but since they have a built-in motor for shades angle it would be an upgrade!

@petewill I've managed to get the binary code with Audacity quite easy but got stuck as for each button pressed sends out a combination of codes.

Just for the open, always the same code in binary, 0111000000001100100011001110000100011110 twice and then 0111000000001100100011001110000100010001 three times.

//Define Variables
#define SEND_DATA 3 //Data pin for RF Transmitter
#define ZERO_HIGH 376 //Delay for the high part of a 0 in microseconds
#define ZERO_LOW 648 //Delay for the low part of a 0 in microseconds
#define ONE_HIGH 713 //Delay for the high part of a 1 in microseconds
#define ONE_LOW 306 //Delay for the low part of a 1 in microseconds

int startUp = 1;

unsigned char standardBits1 = 0b01110000; //sequence with "0b" prefix
unsigned char standardBits2 = 0b00001100;
unsigned char standardBits3 = 0b10001100;
unsigned char standardBits4 = 0b11100001;
unsigned char standardBits5 = 0b00011110;
unsigned char standardBits6 = 0b00010001;
int steps = 1;

//0111000000001100100011001110000100011110  x2
//0111000000001100100011001110000100010001  x3

void setup() {
   
   Serial.begin(9600);
 
}

void loop() 
{
 
  if(startUp == 1)
  {
    

  oneBits(standardBits1);
  oneBits(standardBits2);
  oneBits(standardBits3);
  oneBits(standardBits4);
  oneBits(standardBits6);

  twoBits(standardBits1);
  twoBits(standardBits2);
  twoBits(standardBits3);
  twoBits(standardBits4);
  twoBits(standardBits5); 

  startUp = 1;          //to keep repeating
  delayMicroseconds(5000);
  }

}

void oneBits(unsigned char bits){
    
    unsigned char k;
    int delayTime;
    for(k=0;k<8;k++) {
      int highTime;
      int lowTime;
      delayTime = ((bits>>(7-k)) & 1 ? 1 : 0); 
      
      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);
        }
    }
    

}
void PAUSE()
{
delayMicroseconds(1650);
}


void twoBits(unsigned char bits)
{

    unsigned char l;
    int delayTime;
    for(l=0;l<8;l++)
        {
          
       
      int highTime;
      int lowTime;
      delayTime = ((bits>>(7-l)) & 1 ? 1 : 0); 
    
      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);
      }
        }   

I'm seeing the 'results' back on Audacity since the code is set on a loop. Not to complicate more I'm just using 2 different codes but they are broadcasted to each other.

Is there anything I could do to separate them as any delay in between the processes won't work??

Thanks

Carl