@sergio_uno I tend to agree, but I do not have control over the forum or the openhardware.io website. I would mean though that you would have to add the OSH logo to your boards, and probably your identifiers on the cogs.

It will work, and as long as the project just need little functionality it should be manageable. Managing a lot of functionality will be a pain though, since you won't have as nice development and debug tools available (compared to using a real controller on linux or windows machine). You will need to hard-code node IDs for all nodes (except the gateway which always has ID 0) though, just as you have already done with #define MY_NODE_ID 123. I mention it because a lot of people have tried to get auto ID from a gateway, but that won't work since the ID assignment is done by the controller.