Arduino nano 5V to 3.3V bluetooth module

It should work fine.

I bought one of those modules (but without the base board).

The hard part was connecting the leads to the tiny edge connector.

I also found proving that it worked from my mac quite hard. I tries z-term and just the console, but in the end I found that the Processing example program called Duplex was just the ticket. But remember to edit to change the port index. Run it once and it will fail, but then give you a list of ports, and you can just change the port number.

Good luck!