Can't connect to HC-05 modules (Master and Slave)

[peterbabs]

I want to connect two HC-05 modules, one master and one slave. So to that I need to access 'AT Commands'.

Theoretically, I just needed to upload an empty code, and then connect the module to the arduino in command mode (I use a Nano) TX and RX pins and then go to the Serial Monitor at 38400 baudrate and sent the AT commands. In the past this worked for me, but now this ain't working anymore.

So I went for some code online and aparently AT commands started working. I configured master and slave, and binded the address of the slave to the master.

I connected the modules to an input voltage and I was expecting a connection between them but they are not pairing. On youtube videos they say to connect with two different arduinos, but doesnt make any sense to me because they should connect by themselves just for being ON.

I don't know what to do, I need these working for a project and I'm just wasting time searching on the internet, because nothing works for me. I just didnt tried using them with 2 arduinos with code on them, but I dont think thats the issue AND IF IT IS, please tell me what's the correlation.

[Nick_Pyner]

@peterbabs

I dont think that's the issue

It isn't, but you are going to have to connect them eventually so you might as well do it now. Assuming Blueteeth are the same, whatever you did before is not the same as what are doing now, and there is probably something stupid going on. Have you tested each HC-05 for a plain old slave-mode hello world?