Change baud rate on DSD TECH HM-18

Projects Programming
1

I have purchased DSD TECH HM-18 BLE Module for my Arduino project and had it working fine for sending and receiving data. However default baud rate is 9600 and according to their datasheet it can be changed to higher values. I have tried all I could, but nothing happens.

So I have connected BLE to my board and through the bluetooth sending command:

AT+BAUD? this gives me response OK+Get:3 then I send AT+BAUD4 according to their instructions and nothing happens. I don't get any response. Also it says to restart the module = re-power. I do that, but AT+BAUD? gives me response OK+Get:3 again.

I read on Amazon, where I have purchased it, that somebody actually succeeded in changing baud rates on this unit. I have tried to ask question there, but no response.

Anybody here had done this? Any successful results?

2

I recently purchased same HM-18 module from DSD and will be attempting to connect and test also. Please advise any progress and experience with this unit.

3

I was able to change the name. However I was not able to change baud rate. Also what I don't like is that after several disconnections, this unit goes offline. This is probably for energy saving, but I would like to have a possibility to change this behavior, since in my case it is constantly running on power supply and there is no battery involved in my project.

4

This topic was automatically closed 180 days after the last reply. New replies are no longer allowed.