Note for Microsoft Surface Keyboard

[KevinRoebert]

This should be a hint for all persons who want to use a Raspberry Pi Zero W as HID proxy for a Microsoft Surface Keyboard.

It is currently not possible (<= 2019-09-26-raspbian) to pair the Surface Keyboard with the Zero, because the passcode dialogs never appear, not even if you try it via bluetoothctl. This seems to be because there are bugs in the bluetooth stack. See also this article: https://edspencer.me.uk/posts/2019-04-11-does-the-surface-keyboard-work-with-ubuntu-yes-but-only-with-ubuntu-18-onwards/

Maybe the pairing works with a Pi B 2, 3, 3+ or 4 if you use >= Ubuntu MATE 18.04.