cattledog:
I'm not sure that "pairing" is the corrrect terminology for the PC. I connected an HC05 to a Bluetooth terminal app on a Windows 10 PC last night to check the process out, and through the Action Center there was a procedure to scan for the device and link to it. This was independent of any communications with the HC05 through the terminal app
That's what everybody but Windows 10 calls pairing - getting on the dance card. PC terminal and Arduino programme are not involved.
I certainly agree with that. If things weren't messy on the PC we wouldn't be having this conversation
I think I should have said Desktop PC. which don't normally have bluetooth built-in. I never got my XP desktop to run a bluetooth dongle - not enough motivation to overcome the tedium. With Win 7 it was OK. My Dell 430 laptop came with on-board bluetooth and a Toshiba Bluetooth interface, which is as good as a phone.