Arduino NANO and Bluetooth modul - why not use Rx Tx pins?

Projects Networking, Protocols, and Devices
1

Dear community,

can I ask you a question why if I search for Arduino NANO connection with Bluetooth modul (for communication with smartphones for example) I see lots of results where are connections between digital Arduino NANO pins (D0, D1..) and RxTx Bluetooth pins. Why not use Arduino RxTx pins instead? Does it have any reason?

Thank you.

JDY-33 bluetooth module does not work with hardware RX pin of Arduino UNO
2

I thought the pins D0 and D1 are the Rx and Tx pins?

It is common to use avoid using Rx and Tx so as to leave them free for communication with the Serial Monitor for program debugging. If you are sufficiently confident of your programming skills there is nothing to prevent you connecting a Bluetooth device to Rx and Tx. However you will probably need to disconnect it whenever you wish to upload a new program.

...R

3

Ahh, thanks for explanations.