SwitchBot: An Easily Retrofittable Automatic Curtain-Drawing System

SwitchBot, invented by a company of the same name, is a small droid that hangs from a curtain rod. Motorized wheels inside the hangers allow it to travel side-to-side along the rod. With a pair of these connected to curtains, you essentially have a no-installation-required automatic curtain-drawing system. Actually there is some installation required, but it looks to be a breeze: It works with a variety of curtain types: You can control the SwitchBot via the attached remote,...