A "few buttons" controller

[harbaum]

This needs a keyboard but only for very few functions. I've been told that these

https://www.atari-forum.com/download/file.php?id=53913&mode=view

cheap keyboard like things in fact do work with your core and can be configured with https://github.com/kriomant/ch57x-keyboard-tool

[vossstef]

@harbaum do we need a variant that covers all the OSD Key's as well (up, down, ok, page up, page down, F12 + Game Button's ) or will e.g. three Key's + Dial be sufficient ?

[harbaum]

Whatever the user wants. It seems these are fully programmable, so there's no work for us to do.

I just mentioned it since it might be useful for your core as a full keyboard seems to be total overkill.

[ojaksch]

May I join the discussion? I'm the one who is using this macro keyboard and pointed that to Till. In my case it is the 12-key/2-knob one, has three programmable layers (ie for different cores) and is freely programmable (the knobs also). I set it up with 10 keys for the A2600 (F11, F12 etc) and is doing a great job.

If there are any questions or things to try, just ask. One idea I'm having is to use one of the knobs as a mouse or a paddle emulation.

[vossstef]

@ojaksch , i also ordered the same 12 key + 2 knob but didn't found time to try it apart from checking USB ID and function in windows...
Do you want to share your best practice mapping file?

[ojaksch]

Of course! See my attached mapping file and how rotation and mapping goes according to the yaml.
"F24" is meant for "unoccupied", haven't tried how to set a key to "no function".

a2600-ch57x-mapping.zip

[ojaksch]

Well, the next two test candidates have arrived and are again working as expected. Picture shows their key assignment, USB connector to north.
yaml's attached. The 9-key needed its orientation set to clockwise to keep its USB connector to north. Otherwise nothing special to report, except having fun 😄

a2600-ch57x-mappings.zip