I am after some advice/help. I have searched various terms and can't find what I am looking for, probably using wrong terms, but here goes!
Does passing messages between nodes cost any extra resources, or is it better to save as a variable and then use a 'get' to reload it?
Although I have no reason to say this, I would imagine that a message, such as 'msg.whatever' is basically a variable that is accessed using the 'msg.whatever' label. The only difference I can see this making is if you wish to read the complete message topic in a debug node.
Or, perhaps I might be breaking some programming protocol?
Look forward to your comments.