We’re not certain whether [Paul Gould]’s kid’s prosthetic elbow joint is intended for use by a real kid or is part of a robotics project — but it caught our eye for the way it packs the guts of a beefy-looking motorized joint into such a small space.
This is a companion discussion topic for the original entry at https://hackaday.com/2024/04/23/an-elbow-joint-that-can/