Requirements

Requirements are the features that the given machine must have, such as a specification of various properties and other details of implementation.

The Specification narrows the development path from concept to specific implementation. The specification is a distillation of the Conceptual Design (how it's done) and Design Rationale (why it's done in a particular way) into a specific set of design parameters. Note that these properties are designed to be fixed in one implementation - yet they are overall flexible by virtue of Scalability, Modularity, and Design for Disassembly - which allow for variations from a core design.

Protocol

• Start with a Requirements Spreadsheet
• Fill it out for your machine. Include simple diagrams and flowcharts.
• Publish on the wiki