Open source
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Open source is the practice of publishing digital resources publicly alongside their source code or source files, enabling use, study, modification, and redistribution. It is historically and commonly
The RepRap Mendel general-purpose 3D printer with the ability to make copies of most of its own structural parts
Open-source hardware
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Open-source hardware is hardware whose design source files — schematics, CAD files, bill of materials — are made publicly available, allowing anyone to study, modify, make and distribute the hardware.
Open source
…The concept has also been applied beyond software to other digital resources made available alongside their source files or design documents, such as open-source hardware, open-source educational resources or open-source fonts. The rights to reuse this type of digital resources are guaranteed through a specific legal…
RISC-V processor prototype, January 2013
The OSHW (Open Source Hardware) logo silkscreened on an unpopulated PCB
The Arduino Diecimila, another popular and early open source hardware design