# SPDX-FileCopyrightText: 2020 - 2021 Martin Häuer <martin.haeuer@ose-germany.de> # SPDX-FileCopyrightText: 2020 - 2025 Robin Vobruba <hoijui.quaero@gmail.com> # # SPDX-License-Identifier: GPL-3.0-or-later
This can be used to assess an Open Source Hardware projects stage of technical development and its documentation.
Open Technology & Documentation Readiness Level (OTRL) ontology
Descriptions (`rdfs:comment`) from NASA are used under public domain
Regarding the use of `dcam:domainIncludes` and `dcam:rangeIncludes` in this ontology: Looking at the definitions for the RDFS version of the two, `rdfs:domain` and `rdfs:range`: * https://www.w3.org/TR/rdf-schema/#ch_domain * https://www.w3.org/TR/rdf-schema/#ch_range and as described in this StackOverflow answer: <https://stackoverflow.com/a/74782257/586229>, multiple objects for the two RDFS properties mean, that *all of them* apply, simultaneously, not *one of them*. You may think of this as an `AND` coupling. We want the *one of them* meaning though (`OR`). The `dcam:*` properties give us just that. Though there is an additional, very important difference: The `*Includes` properties are just suggestions, so if they are used, it is left open to use other, not mentioned class as domain or range too.
Open Documentation Readiness Level
Documentation Readiness Level for open source hardware
Open Technology Readiness Level
Technology Readiness Level for open source hardware
exit criteria
Criteria to exit this OTRL/ODRL for the next higher one; inspired by: https://www.nasa.gov/pdf/458490main_TRL_Definitions.pdf
goal
Goal or purpose of this OTRL/ODRL
ODRL-1
Documentation process commenced
(OSHWA-compliant) free/open license applied on published material
Published information under free open source license
ODRL-2
Collaborative documentation in progress
Provision of documentation files and in editable formats enabling collaboration development
ODRL-3
Full documentation published
stable release
Complete documentation as per DIN SPEC 3105-1
ODRL-3*
Full documentation published & audited
proof of compliance after DIN SPEC 3105-2 or equivalent (such as a scientific publication, OSHWA certification, RYF certification)
Public evidence of documentation maturity
ODRL-4
Full documentation for product qualification
Product qualification documents published enabling decentralized commercial distribution
OTRL-1
Ideation
Product idea; needs are identified and initial specifications are defined.
OTRL-2
Conception
Mature product concept has been formulated
OTRL-3
Development
Product model is developed
OTRL-4
Prototyping and testing
Full functional prototype is built and tested
OTRL-5
Manufacturing development
Fairly reliable processes identified and characterized
OTRL-6
Product qualification
Certificate marking conformity assessment or comparable