Hi everybody,
I have the following problem.
When I try to send an AT command to the module i always get "" back on the recv line also it won't begin.
I think it's not in AT mode but i don't get it into AT mode by connecting the key pin to gnd or 5V.
Anyone an idea?
Thanks in advance
dec0yable:
I think it's not in AT mode
It either is, or it isn't. If it is, LED should flash about once every two seconds. If LED isn't doing that, it isn't in AT mode.
Arduionfy has a tutorial on programming the HC-05.
Nick_Pyner:
It either is, or it isn't. If it is, LED should flash about once every two seconds. If LED isn't doing that, it isn't in AT mode.Arduionfy has a tutorial programming the HC-05.
well it's flashing quite rapidly i think about 5 times per second although i can't be sure. But my question is how to get it in AT mode? I read you have to connect the key pin to 5v but that isn't working?
Read reply #1 again
got it working with another module.
Someone before me put the module in baudC so the baud rate was much too high so we couldn't communicate with it to put it back to 9600.