Let’s take a look at some of the simple mechanisms that they use. Pulleys and gears.When a flag is raised, it will often be lifted using a pulley mechanism. A pulley is a wheel on a fixed axle.

The cable then comes back up over a third pulley, and then runs to the headphones on [Barnso]’s head. Basically, it’s a super simple cable retraction mechanism that keeps the long headphone ...

Inspired by the LIMS2-AMBIDEX robotic arm, the mechanism is effectively two counteracting sets of pulley, running of the ... surgical robots to control their tiny manipulators.