Project HoverArm, using high torque Hoverboard motors for robotics applications.

https://discourse.odriverobotics.com/t/project-hoverarm/441/2

Hoverboard motors were already mentioned by @zwn in this thread several months ago, and recently I started looking into using them myself, and there are a few others over on the ODrive discord (specifically @beak90) who are also interested.

The first thing to note about these motors is that they are mass produced in large qantities, and they have enough torque to direct-drive a human, and humans are heavy. This means we can expect that it has a good torque-to-price ratio. Turns out, nope, it actually has a ridiculous torque-to-price ratio.