Open source software only applies to software. Open source hardware, as OC mentioned, does not imply documentation, as long as all components are replicable, and readily available.
“Open source hardware is hardware whose design is made publicly available so that anyone can study, modify, distribute, make, and sell the design or hardware based on that design. The hardware’s source, the design from which it is made, is available in the preferred format for making modifications to it.” -
https://oshwa.org/resources/open-source-hardware-definition/
Open source software only applies to software. Open source hardware, as OC mentioned, does not imply documentation, as long as all components are replicable, and readily available.
“Open source hardware is hardware whose design is made publicly available so that anyone can study, modify, distribute, make, and sell the design or hardware based on that design. The hardware’s source, the design from which it is made, is available in the preferred format for making modifications to it.” - https://oshwa.org/resources/open-source-hardware-definition/