Cannot assign COM port to HC-05 bluetooth device I can't set a COM port to my paired BT module. For better understanding I recorded a YouTube video to make sure I show everything.

Hardware:


Arduino Nano knock-off by RobotDyn (atmega168)
Bluetooth module HC-05 (zs-040) which looks like this
Windows 10 Home 64 bit on tablet


I have wired them up like this .

However, before that, I tried to wire it up without the resistors (so I hope I didn't damage anything).

Here is my very simple code which should just echo back what it get.

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

void loop() {
  if(Serial.available())
  {
    Serial.println(Serial.parseInt());
  }
  delay(100);
}
Based on my experience, there is nothing wrong (yet) on the Arduino. You can check  this or this. Unlike previous windows version, Win 10 tend to "ignore" bluetooth connection, so you have to assign the COM port manually.