CERN Open Hardware Licence

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The CERN Open Hardware Licence (OHL or CERN OHL) is a licence used in open-source hardware projects. It was created by CERN, which published version 1.0 in March 2011. Version 1.1 was published in July 2011.[1] Version 1.2[2] was published in September 2013.[3] Version 2.0,[4] which utilizes a simplified language and covers also integrated circuit designs,[5] was published in March 2020.[6]


Contrary to most licence names, the CERN OHL uses the British English spelling licence rather than the American English spelling license which contains an "s".

Projects using the CERN OHL[edit]

The ColorHug2, an open source colorimeter.

On the CERN OHL website they have a list of projects using their licence.[7] These projects include:


The CERN OHL is an accepted free content licence according to the Free Cultural Works definition[14] and version 2 is approved by the Open Source Initiative.[15]

See also[edit]


  1. ^ CERN launches Open Hardware initiative
  2. ^ CERN Open Hardware Licence 1.2
  3. ^ CERN OHL v1.2 released
  4. ^ CERN Open Hardware Licence version 2
  5. ^ CERN OHL v2 draft presented at FSiC2019
  6. ^ CERN updates its Open Hardware Licence
  7. ^ "Cernohlprojects · Wiki · Projects / CERN Open Hardware Licence".
  8. ^ "AXIOM Alpha".
  9. ^ "Mechanical Ventilator Milano".Galbiati, C.; Abba, A.; Agnes, P.; Amaudruz, P.; Arba, M.; Ardellier-Desages, F.; Badia, C.; Batignani, G.; Bellani, G.; Bianchi, G.; Bishop, D. (2021). "The novel Mechanical Ventilator Milano for the COVID-19 pandemic". Physics of Fluids. 33 (3): 037122. arXiv:2003.10405. Bibcode:2021PhFl...33c7122A. doi:10.1063/5.0044445. PMC 8060010. PMID 33897243.
  10. ^ "Monero Hardware Wallet revision control". GitHub. 14 May 2020.
  11. ^ "ScopeFun - Open Source Oscilloscope Hardware". Retrieved 2022-04-17.
  12. ^ "colorhug2-hardware/COPYING at master · hughski/colorhug2-hardware · GitHub". GitHub. 28 August 2016.
  13. ^ biere-libre
  14. ^ Licenses on "The CERN Open Hardware Licence (CERN OHL) is a license used in open-source hardware projects (OSHW)."
  15. ^ Tim Anderson. "A dedicated licence for open-source hardware: CERN OHL approved by OSI". Retrieved 2021-01-31.

External links[edit]