What is the web page or port to access configuration? about bthidhub HOT 4 OPEN

Sounds like you didn't follow the install instructions?
https://github.com/ruundii/bthidhub/tree/master/install

from bthidhub.

Sorry, I missed the last line :(
I was connected to RPi by Putty, cloned the project, and executed
:~/bthidhub/install/on_rpi $ sudo ./on_pi_setup.sh

(because on Win, I see the install_windows.bat file does the same thing.)

Unfortunately, [rpi-ip-address]:8080 still does not work for me.

from bthidhub.

Sorry, I missed the last line :( I was connected to RPi by Putty, cloned the project, and executed :~/bthidhub/install/on_rpi $ sudo ./on_pi_setup.sh

Ah, OK, I was confused by your description of a desktop, as it's all designed to be run headless.

Unfortunately, [rpi-ip-address]:8080 still does not work for me.

If the script didn't error out, and the LED switched off after booting, then it should be ready.
If not, you'll have to SSH in and take a look at what's going on. I forget the commands off the top of my head, but something like systemctl status remapper or journalctl -xe should give you information on whether the service is running or what errors it encountered.

from bthidhub.

If you didn't use the default username, then you may also need to run the command in #81, as that PR has not been finished off yet.

from bthidhub.