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]

Wording

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

The ColorHug2, an open source colorimeter.

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

• Most projects in the Open Hardware Repository OHR
• AXIOM^[8] – digital cinema camera
• Gizmo For You Ltd
• Mechanical Ventilator Milano^[9] Rapid production ventilator design as an answer to COVID-19 shortage
• The Monero Hardware Wallet^[10] The first (licensed schematic and layout) Monero hardware wallet
• Mycroft Mark I – smart speaker with open-source digital assistant (design files available here)
• ScopeFun open source oscilloscope^[11]
• SimpleMachines
• SatNOGS-the open satellite ground station network
• The synchrotron instrumentation PandAbox which chorographs experiments at particle accelerator and other facilities
• Tinkerforge Bricks and Bricklets
• The tristimulus colorimeter Colorhug2 Archived 2017-03-12 at the Wayback Machine uses version 1.1 of this licence.^[12]
• UPSat-the first open hardware satellite 1
• A Free Beer variation, brewed for the RMLL 2012 and recipe placed under the CERN OHL 1.1^[13]
• OpenScout an open source hardware mobile robot

Reception

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

• Open-source hardware
• Open content

References

External links

• CERN Open Hardware Licence