Well done ! Very impressed !

The first thing I can think of is that the new list box object (ctrl + 4) is not supported in older pd versions, where it will not be instantiated in the patch. So all object IDs will be changed and this will also change all connections between objects and create a mess !

Hi, You can give a try to MobMuPlat

Hi,
you can check my fork : https://github.com/jyg/pd-dnd-plugin/tree/master or the original project : https://github.com/megrimm/pd-dnd-plugin

Thanks !

In vanilla, pdL2Ork and plugdata I can find the abstraction and (tested only in vanilla) also the wav file. But when I press [all 1( in your main patch, I get an error message " 0_audiodata: no such table" because on those platforms $0 is not supported in message boxes. The workaround is to use a float box and $1 like this
In Purr-Data I would'nt be able to give you an answer. Did you try adding a [declare -path ./ ] object in your cloneobject abstraction ?

you may check the new [file] object that can read and write binary files.

Maybe it is related to permissions for reading dev/input devices under linux ?
I had trouble with hidio when I passed from ubuntu 18.04 to 20.04. With Ubuntu 20.04, access to /dev/input/*** is denied to normal user.
It 's not the same external nor the same OS, but it may be the same issue.
In my case, a workaround was to add current user as member of the input group, in order to have permission to read the touchscreen device:

sudo gpasswd -a $USER input

EDIT Anyway, not sure of my command. Cannot remember where I found it...

To be sure : did you prepend your messages with 'list' selector before sending them to the "toGUI" receiver ?
MobMuPlat doesn't accept arbitrary messages, only lists.

I like the patch easy to read and very informative. Thanks for sharing !