If you just want to share code, that's fine as well, but that's not an OSS project (sure, it can be an open source "project" - but not a project that grows)
Why is sharing code (as long as an OSS license is attached) not open source?
Under what circumstances am I allowed to call things I do open source, under what circumstances not?
outside of a few specific areas; like compilers but that's mainly because hardware is constantly evolving.