I've been trying to use two HC05 Bluetooth modules to have two Arduino send data back and forth. I'm using an Arduino Uno, and I've wired it to the module following this tutorial.
Baudrate is set to 38400, and both BL & CL is selected.
I've wired up my first Arduino, and the light is flashing every 2 seconds, which I'm pretty sure suggests that it's in AT command mode. I want to set it to master mode, so first I entered AT in the serial terminal but didn't get a reply from the module. Any idea of what I did wrong?
Not everyone might want to watch the whole Video to find out what might have gone wrong...
So, you've uploaded an empty sketch, seems fine
Did you set connect the BT-Module to TX0 and RX0 the right way after programming?
Did you set the module in AT-Mode and did it blink the way it should?
Did you set the speed of your communication to 38600kbit/s (it's 115200kbit/s by default)?
Please provide a detailed list of steps of what you did, how you wired it, what you expect and what you got.