This document provides an overview of pneumatic power systems and their components. It discusses why pneumatics are useful for robotics in terms of weight, durability, speed and simplicity. Key components of pneumatic systems include pistons, solenoids, compressors, tanks, tubing and pressure switches/regulators. Pistons are the moving parts, solenoids control piston movement, compressors provide air pressure, and other components ensure proper air flow and pressure levels.