I totally agree with @LeissKG. In every word. Raspberry is very popular device. It is beyound imagination what momentum can give the NEO OPENPLC project.
@Theogoralves you said:
"If I make OpenPLC-Zero expansible as well, there will be no difference between the two, apart from the fact that one will be driven by a RPi Zero module, and the other will be driven by an H3 quad-core CPU. OpenPLC-Zero is supposed to be a cheap, entry point device"
So what? We are building the first one (zero) easily and inexpensive (in human resources, time and money) fully attached to our PLCNEO bus, in DINrail, in the same box, the community will start doing projects (a lot!) and on top of that we are building the NEO CPU. Take ABB for instance. They have many CPUS
If you are wiling not to follow that direction (Raspberry zero 485 interface with our I/O bus) I think that I have little to offer in that discussion.
Do not see Raspberry zero as a "competitor" to your NEO CPU. Think that the first will make the world to know the second.
You have a grate mind and you accomplished beautiful things with your OPENPLC issue.
Follow the road to success. That is the power of people in open community. And we people love and trust the Raspberry thing to connect with NEO I/O modules