I'm using this audio Bluetooth emitter.
I connected it like so, the LED flashes, but no Bluetooth device is displayed on my phone or PC. How do I troubleshoot this or do I need a matching receiver module?
No, and no AT commands are needed for this to connect. The connection pin (CON
) on the module may (or may not) be need to pair to a Bluetooth receiver.
This Bluetooth Module uses an "AT" command set to program it to connect to your speaker and not others.
which suggests you need to send command commands via the UART TX/RX pins to pair with the speakers. I haven't checked the manual. \$\endgroup\$