@jmarcelino In the board, I have a custom code running, and it shows what it should on the console, but whenever I try to upload a project, it fails. It had worked until I updated the plugin to the last version.

I have not had too many issues with the PyMakr plugin for atom. But I can understand if you do not like that setup. At least with more recent version of the plugin (November is the last I used it heavily), I did not have problems. What I remember annoying me the most was not being able to copy from the REPL. rshell is also a good option when you have a physical serial connection https://github.com/dhylands/rshell

@Ralph Thanks a lot for your quick answer. i will keep going with rshell.