Arduino Limit Switch

A limit switch is a type of electromechanical device used to detect the presence or absence of an object, monitor its movement, or define specific limits of motion. Its primary function is to ensure safety, control processes, and prevent mechanical damage.

Working Principle

A limit switch works by mechanically interacting with a moving object. The switch has an actuator (lever, plunger, or roller) that changes state (open or closed) when contacted or moved by an external force. This change in state is used to send signals to a control system, which initiates predefined actions.

Applications

1.Elevators to detect floor levels.
2.Industrial machinery to limit travel distances.
3.Automated systems like CNC machines and conveyor belts.
4.Garage doors to detect fully open or closed states.