Status of bluetooth connection on later macos version

[erard22]

• OS: MacOs 15.5 (24F74)
• Python version: 3
• NXT-Python version: latest
• Connection method: USB? Bluetooth? Bluetooth

Hello,

I just wanted to try out the library to use an old nxt via bluetooth with my son.
The nxt has a broken display, so python and bluetooth could be the alternative. As there is no windows computer in the house.
But what's the status here? I followed the steps on the installation page, nxt is connected via bluetooth, but no brick is found. Via usb cable the script is working.

nxt.locator.BrickNotFoundError: no brick found

Anyone else is able to use bluetooth?

[RZI3D]

Did you install PyBlueZ?

[schodet]

Problem is that pybluez is no longer supported, and this is complicated to install it on macos.

See here: https://ni.srht.site/nxt-python/latest/installation.html#installation-using-pip

Another option would be to use a bluetooth socket, but nobody tried it on MacOS yet: #199 (comment)

If you want to try, please test the btsocket branch and report the result.

Also documentation could be improved by providing a test-matrix of which OS works with which setup, this could also be used by nxt-python to select the best option according to the OS.

[dlech]

but nobody tried it on MacOS

I actually looked at this a while back. Bluetooth socket doesn't work on macOS - it isn't implemented in Python and isn't really possible to do so. The Apple IOBluetooth APIs for RFCOMM don't have socket support and only run on the main thread with a NSRunLoop running, so it makes it difficult to integrate into an arbitrary Python program.

I have some idea to make something that launches a separate process that runs the Bluetooth stuff in a NSRunLoop and has a socket that is somewhat compatible with Bluetooth RFCOMM sockets so it can be an almost drop in replacement, but never got around to actually implementing it.

[schodet]

Thanks @dlech (and sorry if you did mention it earlier but I forgot).

So only option today for MacOS is to manage to build pybluez from source.