Production-Ready Modular Prototypes
You should be able to throw your prototypes in a backpack. You should be able to tweak their code while at the coffee shop. You should be able to put your prototypes into production around the house or shop. That's the goal of the Retro Specification. The spec aims to set up a middle-ground between breadboard and production board.
There are many hardware interfaces in the wild. Some deserve reinforcement, while others deserve deprecation. The Retro Specification will document this drive toward convenient compatibility among all the things. There is no need to make/buy a 3D printer or CNC machine... unless you want to. No need to do a large circuitboard production run... again, unless you want to. No need to crowdfund your idea or deal with the challenges of said campaign. There's nothing wrong with making/selling things in small quantities.
You don't need much to build a Retro Module...
As featured on Hackaday.