diff --git a/LICENSE b/LICENSE new file mode 100644 index 0000000..6be1413 --- /dev/null +++ b/LICENSE @@ -0,0 +1,285 @@ +CERN Open Hardware Licence Version 2 - Strongly Reciprocal + + +Preamble + +CERN has developed this licence to promote collaboration among +hardware designers and to provide a legal tool which supports the +freedom to use, study, modify, share and distribute hardware designs +and products based on those designs. Version 2 of the CERN Open +Hardware Licence comes in three variants: CERN-OHL-P (permissive); and +two reciprocal licences: CERN-OHL-W (weakly reciprocal) and this +licence, CERN-OHL-S (strongly reciprocal). + +The CERN-OHL-S is copyright CERN 2020. Anyone is welcome to use it, in +unmodified form only. + +Use of this Licence does not imply any endorsement by CERN of any +Licensor or their designs nor does it imply any involvement by CERN in +their development. + + +1 Definitions + + 1.1 'Licence' means this CERN-OHL-S. + + 1.2 'Compatible Licence' means + + a) any earlier version of the CERN Open Hardware licence, or + + b) any version of the CERN-OHL-S, or + + c) any licence which permits You to treat the Source to which + it applies as licensed under CERN-OHL-S provided that on + Conveyance of any such Source, or any associated Product You + treat the Source in question as being licensed under CERN-OHL-S. + + 1.3 'Source' means information such as design materials or digital + code which can be applied to Make or test a Product or to + prepare a Product for use, Conveyance or sale, regardless of its + medium or how it is expressed. It may include Notices. + + 1.4 'Covered Source' means Source that is explicitly made available + under this Licence. + + 1.5 'Product' means any device, component, work or physical object, + whether in finished or intermediate form, arising from the use, + application or processing of Covered Source. + + 1.6 'Make' means to create or configure something, whether by + manufacture, assembly, compiling, loading or applying Covered + Source or another Product or otherwise. + + 1.7 'Available Component' means any part, sub-assembly, library or + code which: + + a) is licensed to You as Complete Source under a Compatible + Licence; or + + b) is available, at the time a Product or the Source containing + it is first Conveyed, to You and any other prospective + licensees + + i) as a physical part with sufficient rights and + information (including any configuration and programming + files and information about its characteristics and + interfaces) to enable it either to be Made itself, or to + be sourced and used to Make the Product; or + ii) as part of the normal distribution of a tool used to + design or Make the Product. + + 1.8 'Complete Source' means the set of all Source necessary to Make + a Product, in the preferred form for making modifications, + including necessary installation and interfacing information both + for the Product, and for any included Available Components. If + the format is proprietary, it must also be made available in a + format (if the proprietary tool can create it) which is viewable + with a tool available to potential licensees and licensed under a + licence approved by the Free Software Foundation or the Open + Source Initiative. Complete Source need not include the Source of + any Available Component, provided that You include in the + Complete Source sufficient information to enable a recipient to + Make or source and use the Available Component to Make the + Product. + + 1.9 'Source Location' means a location where a Licensor has placed + Covered Source, and which that Licensor reasonably believes will + remain easily accessible for at least three years for anyone to + obtain a digital copy. + + 1.10 'Notice' means copyright, acknowledgement and trademark notices, + Source Location references, modification notices (subsection + 3.3(b)) and all notices that refer to this Licence and to the + disclaimer of warranties that are included in the Covered Source. + + 1.11 'Licensee' or 'You' means any person exercising rights under + this Licence. + + 1.12 'Licensor' means a natural or legal person who creates or + modifies Covered Source. A person may be a Licensee and a + Licensor at the same time. + + 1.13 'Convey' means to communicate to the public or distribute. + + +2 Applicability + + 2.1 This Licence governs the use, copying, modification, Conveying + of Covered Source and Products, and the Making of Products. By + exercising any right granted under this Licence, You irrevocably + accept these terms and conditions. + + 2.2 This Licence is granted by the Licensor directly to You, and + shall apply worldwide and without limitation in time. + + 2.3 You shall not attempt to restrict by contract or otherwise the + rights granted under this Licence to other Licensees. + + 2.4 This Licence is not intended to restrict fair use, fair dealing, + or any other similar right. + + +3 Copying, modifying and Conveying Covered Source + + 3.1 You may copy and Convey verbatim copies of Covered Source, in + any medium, provided You retain all Notices. + + 3.2 You may modify Covered Source, other than Notices, provided that + You irrevocably undertake to make that modified Covered Source + available from a Source Location should You Convey a Product in + circumstances where the recipient does not otherwise receive a + copy of the modified Covered Source. In each case subsection 3.3 + shall apply. + + You may only delete Notices if they are no longer applicable to + the corresponding Covered Source as modified by You and You may + add additional Notices applicable to Your modifications. + Including Covered Source in a larger work is modifying the + Covered Source, and the larger work becomes modified Covered + Source. + + 3.3 You may Convey modified Covered Source (with the effect that You + shall also become a Licensor) provided that You: + + a) retain Notices as required in subsection 3.2; + + b) add a Notice to the modified Covered Source stating that You + have modified it, with the date and brief description of how + You have modified it; + + c) add a Source Location Notice for the modified Covered Source + if You Convey in circumstances where the recipient does not + otherwise receive a copy of the modified Covered Source; and + + d) license the modified Covered Source under the terms and + conditions of this Licence (or, as set out in subsection 8.3, + a later version, if permitted by the licence of the original + Covered Source). Such modified Covered Source must be + licensed as a whole, but excluding Available Components + contained in it, which remain licensed under their own + applicable licences. + + +4 Making and Conveying Products + +You may Make Products, and/or Convey them, provided that You either +provide each recipient with a copy of the Complete Source or ensure +that each recipient is notified of the Source Location of the Complete +Source. That Complete Source is Covered Source, and You must +accordingly satisfy Your obligations set out in subsection 3.3. If +specified in a Notice, the Product must visibly and securely display +the Source Location on it or its packaging or documentation in the +manner specified in that Notice. + + +5 Research and Development + +You may Convey Covered Source, modified Covered Source or Products to +a legal entity carrying out development, testing or quality assurance +work on Your behalf provided that the work is performed on terms which +prevent the entity from both using the Source or Products for its own +internal purposes and Conveying the Source or Products or any +modifications to them to any person other than You. Any modifications +made by the entity shall be deemed to be made by You pursuant to +subsection 3.2. + + +6 DISCLAIMER AND LIABILITY + + 6.1 DISCLAIMER OF WARRANTY -- The Covered Source and any Products + are provided 'as is' and any express or implied warranties, + including, but not limited to, implied warranties of + merchantability, of satisfactory quality, non-infringement of + third party rights, and fitness for a particular purpose or use + are disclaimed in respect of any Source or Product to the maximum + extent permitted by law. The Licensor makes no representation + that any Source or Product does not or will not infringe any + patent, copyright, trade secret or other proprietary right. The + entire risk as to the use, quality, and performance of any + Source or Product shall be with You and not the Licensor. This + disclaimer of warranty is an essential part of this Licence and a + condition for the grant of any rights granted under this Licence. + + 6.2 EXCLUSION AND LIMITATION OF LIABILITY -- The Licensor shall, to + the maximum extent permitted by law, have no liability for + direct, indirect, special, incidental, consequential, exemplary, + punitive or other damages of any character including, without + limitation, procurement of substitute goods or services, loss of + use, data or profits, or business interruption, however caused + and on any theory of contract, warranty, tort (including + negligence), product liability or otherwise, arising in any way + in relation to the Covered Source, modified Covered Source + and/or the Making or Conveyance of a Product, even if advised of + the possibility of such damages, and You shall hold the + Licensor(s) free and harmless from any liability, costs, damages, + fees and expenses, including claims by third parties, in relation + to such use. + + +7 Patents + + 7.1 Subject to the terms and conditions of this Licence, each + Licensor hereby grants to You a perpetual, worldwide, + non-exclusive, no-charge, royalty-free, irrevocable (except as + stated in subsections 7.2 and 8.4) patent license to Make, have + Made, use, offer to sell, sell, import, and otherwise transfer + the Covered Source and Products, where such licence applies only + to those patent claims licensable by such Licensor that are + necessarily infringed by exercising rights under the Covered + Source as Conveyed by that Licensor. + + 7.2 If You institute patent litigation against any entity (including + a cross-claim or counterclaim in a lawsuit) alleging that the + Covered Source or a Product constitutes direct or contributory + patent infringement, or You seek any declaration that a patent + licensed to You under this Licence is invalid or unenforceable + then any rights granted to You under this Licence shall terminate + as of the date such process is initiated. + + +8 General + + 8.1 If any provisions of this Licence are or subsequently become + invalid or unenforceable for any reason, the remaining + provisions shall remain effective. + + 8.2 You shall not use any of the name (including acronyms and + abbreviations), image, or logo by which the Licensor or CERN is + known, except where needed to comply with section 3, or where the + use is otherwise allowed by law. Any such permitted use shall be + factual and shall not be made so as to suggest any kind of + endorsement or implication of involvement by the Licensor or its + personnel. + + 8.3 CERN may publish updated versions and variants of this Licence + which it considers to be in the spirit of this version, but may + differ in detail to address new problems or concerns. New + versions will be published with a unique version number and a + variant identifier specifying the variant. If the Licensor has + specified that a given variant applies to the Covered Source + without specifying a version, You may treat that Covered Source + as being released under any version of the CERN-OHL with that + variant. If no variant is specified, the Covered Source shall be + treated as being released under CERN-OHL-S. The Licensor may also + specify that the Covered Source is subject to a specific version + of the CERN-OHL or any later version in which case You may apply + this or any later version of CERN-OHL with the same variant + identifier published by CERN. + + 8.4 This Licence shall terminate with immediate effect if You fail + to comply with any of its terms and conditions. + + 8.5 However, if You cease all breaches of this Licence, then Your + Licence from any Licensor is reinstated unless such Licensor has + terminated this Licence by giving You, while You remain in + breach, a notice specifying the breach and requiring You to cure + it within 30 days, and You have failed to come into compliance in + all material respects by the end of the 30 day period. Should You + repeat the breach after receipt of a cure notice and subsequent + reinstatement, this Licence will terminate immediately and + permanently. Section 6 shall continue to apply after any + termination. + + 8.6 This Licence shall not be enforceable except by a Licensor + acting as such, and third party beneficiary rights are + specifically excluded. diff --git a/LICENSE.MIT b/LICENSE.MIT new file mode 100644 index 0000000..00fa660 --- /dev/null +++ b/LICENSE.MIT @@ -0,0 +1,18 @@ +MIT License + +Copyright (c) 2026 Hannes Gehrmann + +Permission is hereby granted, free of charge, to any person obtaining a copy of this software and +associated documentation files (the "Software"), to deal in the Software without restriction, including +without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the +following conditions: + +The above copyright notice and this permission notice shall be included in all copies or substantial +portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT +LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO +EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER +IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR +THE USE OR OTHER DEALINGS IN THE SOFTWARE. diff --git a/README.md b/README.md index 0c8314a..218dd68 100644 --- a/README.md +++ b/README.md @@ -142,7 +142,9 @@ S8 UART: 9600 baud, 8N1. BME280 I²C: standard address `0x76` (or `0x77` dependi ├── bom/ bill of materials (CSV) ├── docs/ schematic PDF, layer plots, 3D render ├── firmware/ ESPHome configuration -└── photos/ photographs of the assembled board +├── photos/ photographs of the assembled board +├── LICENSE CERN-OHL-S-2.0 (hardware) +└── LICENSE.MIT MIT (firmware config, BOM, docs) ``` ## Rebuilding the board @@ -156,6 +158,20 @@ S8 UART: 9600 baud, 8N1. BME280 I²C: standard address `0x76` (or `0x77` dependi ## License -Not chosen yet. Recommended for a published open-hardware module: -**CERN-OHL-S-2.0** for the hardware (schematic, layout, footprints) and **MIT** for the firmware -configuration and scripts. A `LICENSE` file must be added before publishing. +Dual licensed, SPDX identifiers: + +| Scope | Licence | File | +|---|---|---| +| Hardware: schematic, layout, symbols, footprints, fabrication data | **CERN-OHL-S-2.0** (CERN Open Hardware Licence v2, strongly reciprocal) | [`LICENSE`](LICENSE) | +| Firmware configuration, BOM, scripts, documentation | **MIT** | [`LICENSE.MIT`](LICENSE.MIT) | + +SPDX notices to keep in derived files: + +``` +SPDX-License-Identifier: CERN-OHL-S-2.0 +SPDX-FileCopyrightText: 2026 Hannes Gehrmann +``` + +Making a board from these files and distributing it is explicitly allowed; if you modify the design +and convey it, CERN-OHL-S requires you to publish the modified design under the same licence and to +mark what you changed (sections 3.2 and 3.3).