Pairing 2 HM-10 modules

Hello,
When setting the first module to Command mode, the website says to input "AT" into the serial monitor and it should return "ok". Also when I disconnect the wire to 5v the module remains powered.

Does anyone know what I have done wrong?
This is the website I used - https://www.instructables.com/id/Modify-The-HC-05-Bluetooth-Module-Defaults-Using-A/

bluetooth_2.ino (622 Bytes)

The default baud rate for the HC-05 is 9600, not 38400. Did you try it at the 9600 baud rate?

Yes, my settings were set to 9600 baud rate.
The first line, how I understand, is a file which is imported into the program from
the laptop, and I think I don't have this particular file.

mmukhina:
Does anyone know what I have done wrong?
This is the website I used - https://www.instructables.com/id/Modify-The-HC-05-Bluetooth-Module-Defaults-Using-A/

The first thing you have done wrong is read an Instructable dealing with an HC-05 while holding an HM-10 in your hand. Of course I could be wrong, and you actually have HC-05s but are asking about pairing HM-10s, in which case, and if you really want to pair HC-05, you should ignore reply#1. The default rate for configuring HC-05 is 38400.

Once you have decided what you have, and what you want to do with it, you will get the best tutorials at Connecting 2 Arduinos by Bluetooth using a HC-05 and a HC-06: Pair, Bind, and Link – Martyn Currey
and
HM-10 Bluetooth 4 BLE Modules – Martyn Currey

I have just realised that maybe you are causing all this confusion because you actually have one of each, in which event I think you are out of luck, as I'm sure HM-10 is not backward compatible with the HC-05.

Thank you very much :slight_smile: