cable/bolt cutter

The Bobbinator

Linear actuators are motors that work in a straight line. They’re very useful for controlling valves and levers, building robots, and retrofitting old mechanisms for digital control. The simplest form of linear actuator has only 2 positions, while more complicated actuators can be positioned just like stepper motors and servos. I needed 32 linear actuators […]

Backyard Zipline

This will give you all the information needed to plan, purchase and build a backyard zipline (and launch pad) without any specialized parts. I purchased everything at the local hardware stores. I did it 100% all by myself, and so can you.