Wisconsin engineer Tim Lexen built and designed the rover. At its heart is a flat triangular PVC main body (measuring about 7 inches/17.8 cm per side) that houses three electric servo motors, battery ...

When mines extract oil or ore from other materials, they often generate liquid waste known as tailings. This waste is stored in tailings ponds, which have to be continuously monitored – and that's ...

Wheels and tracks are common choices for robot propulsion, but they’re not the only game in town. You can do some nifty things with long extruded screws , and they work pretty well in soft terrain.

The design excels offload, and this neat video of a propeller drive is worth the watch. Terrain such as sand, dirt, and especially mucky swampland and soft or hard-packed snow allow the screw drive to ...

I’ve noticed, lately, that slotted screw heads are all but gone on new equipment. The only thing that I find remarkable about that is that it took so long. While it is true that slotted heads have ...

There are many industrial applications requiring linear motion, and for most applications, conventional belt or screw drives do just fine. But when loads need to move long distances (more than 40 ft), ...