I have a Eufy RoboVac 11c, Model T2103, that has broken motor for one of the side brushes. This means that it still can connect to wifi and can be controlled by the RF remote control, but it will not go into automatic vacuuming mode because it thinks the brush is stuck.

I figure it might be an easy fix or you might be able to use this as a base for a robotics project. You can still use the remote to move it around and it can still connect over wifi.

It's less than 1 year old, so it should have been under warranty, but I won it in a contest so they won't fix it for me.