RTL-SDR из ТВ донглов. Варианты применения

#define transmitPin 4 // Digital Pin 4 
  
// on 
bool data[] = { 
  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 
  1, 0, 1, 0, 1, 1, 1, 1, 0, 0 
}; 
  
// off 
//bool data[] = { 
//  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 
//  0, 0, 0, 0, 0, 0, 0, 0, 0, 0 
//}; 
  
int shortDelay = 250; 
int longDelay = 500; 
int preambleDelay = 1000; 
  
void setup() { 
  Serial.begin(9600); 
  pinMode(transmitPin, OUTPUT); 
  delay(3000); 
} 
  
void loop() { 
  sendPreamble(); 
  sendData(); 
  sendPreamble(); 
  sendData(); 
  delay(30000); 
} 
  
void sendPreamble() { 
  for (int i = 0; i < 4; i++) { 
    digitalWrite(transmitPin, HIGH); 
    delayMicroseconds(preambleDelay); 
    digitalWrite(transmitPin, LOW); 
    delayMicroseconds(preambleDelay); 
  } 
} 
  
void sendData() { 
  for (int i = 0; i < sizeof(data); i++) { 
    bool b = data[i]; 
    if (b == 1) { 
      digitalWrite(transmitPin, HIGH); 
      delayMicroseconds(longDelay); 
      digitalWrite(transmitPin, LOW); 
      delayMicroseconds(shortDelay); 
    } else { 
      digitalWrite(transmitPin, HIGH); 
      delayMicroseconds(shortDelay); 
      digitalWrite(transmitPin, LOW); 
      delayMicroseconds(longDelay); 
    } 
  } 
}