В статье предлагается разбить железо на несколько уровней:There are a few definitions, some come from "open source software" which is usually considered software's - "source code under a license (or arrangement such as the public domain) that permits users to study, change, and improve the software, and to redistribute it in modified or unmodified form"
So how does this translate to hardware?
Electronic hardware can be divided up into layers, each of which has different document types and licensing concerns.
1) Hardware (Mechanical) diagrams
2) Schematics & Circuit diagrams
3) Parts list
4) Layout diagrams
5) Core/Firmware
6) Software/API
и рассмотреть проблему открытости по отношению к каждому уровню
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