SBUS to Teensy 4.1 reader

Projects Networking, Protocols, and Devices
9

Since 'Nothing' is working may I suggest that you go back to starting with the basics...

Assuming you have correctly wired up the receiver SBUS to your teeny's Serial1 port via a suitable interface,if, on your teeny u load a basic sketch like this one, do you see the receiver output in the Serial monitor?

#define HWSERIAL Serial1 // set this to the hardware serial port you wish to use

void setup() {
  Serial.begin(115200); // For serial Monitor
  HWSERIAL.begin(100000, 8E2); // Sbus
}

void loop() {
  int incomingByte;

  if (HWSERIAL.available() > 0) {
    incomingByte = HWSERIAL.read();
    Serial.print("UART received: ");
    Serial.println(incomingByte, HEX);
  }
}