MockNABU.ino

// Trivial program that sends the single byte to tickle a NABU Internet Adapter awake
// and then dumps out any response.

#include <SoftwareSerial.h>

SoftwareSerial mySerial(10, 11); // RX, TX

void setup() {
  Serial.begin(115200);
  Serial.println("Started");

  mySerial.begin(111861);
  mySerial.write(0x83);
  Serial.println("Sent 83h");
}

void loop() {
  if (mySerial.available()) {
    Serial.print("Got [");
    Serial.print(mySerial.read(), HEX);
    Serial.println("h]");
  }
  if (Serial.available()) {
    mySerial.write(Serial.read());
  }
}