For every one still having some really old (and unbreakable) Proove/Nexa CS devices that now are too old to be compatible with the newer Code Learning systems. Here’s a Platformio project based on Digispark/Arduino as a development platform.
I guess this is really simple code and you can port it easily.
I used a lot of inspiration from Joakim Wesslens blog but rewrote his code to be smaller and more streamlined to what I am going to use it for. But I still kept is as a library and renamed it to work alongside Joakim’s library. At least that was the intention but I haven’t tested it.
Of course it is a zip-file, but in this brainwashed M$ world I was not allowed to upload anything else.