On: A DIY photographer built his own full-frame camera...

[incompatible]

His repository is https://gitlab.com/zephray/sitina1. The hardware list seems somewhat incomplete, e.g., missing the metal ring and connector for the lens mount and pcbs.

[incompatible → incompatible]

I guess this is more of a specifications hardware list than a complete list of parts that you need to build it.

[dylan604 → incompatible]

Potentially allowing you to choose which mount? Then again, the model might need adjustment to allow the proper distance for the selected mount type.

[altruios → dylan604]

will*

(Almost?) all mounts have their own focal distance from the backplane. I don't know of any two that share the same distance.

[dylan604 → altruios]

with the use of shims, BMD cameras can switch out their mount from EF, PL, or B4 options. so it could be designed with this style in mind, and even make a link to BMD's site to purchase their kit of shims

[altruios → dylan604]

Aye, a universal mount is possible if you have a custom housing for each mount type to match the backplane. Using BMD equipment might run afoul of patents... I don't know enough about the legal end of equipment manufacturing to say.

But it would still require custom mounts for each lens type... which is 100% doable.

[t0bia_s → incompatible]

Lens mount could be proprietary. ES belongs to Canon.