MS6502 wrote:
Hi Daryl,
I have the same module, as seen here:
http://www.instructables.com/id/AT-command-mode-of-HC-05-Bluetooth-module/So, it's not only the module, but it's on a breakout board. I tried to configure the module with AT-commands with an USB-TTL adaptor. This works.
Cheers,
Michael
Here are few ideas to built on top of the others already presented. I'll assume your breakout board provides the 3.3v to 5v conversions - if not, you need to address that too.
You proved the BT module with the USB-TTL adapter and you said you configured it. Does it retain things like baud rate settings through power down/power up cycles? What baud rate is the BT module using?
Next, on the 6551, connect it to the same USB-TTL adapter and ensure it is transmitting and receiving and at the same baud rate as the BT module.
If both of those steps can be repeated individually, even through power cycles, then my guess is they will work when you connect the TX-RX, RX-TX, and Gnd-Gnd.
Daryl
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