Mini Microswitch - SPDT Micro switches are useful for detecting passage of a moving part or for implementing an electronic limit stop. Set up the switch so that your mechanism wipes the lever and closes the switch as it moves by.

Here are pictures of typical microswitches.This is a 3-terminal microswitch, each equipped with a small push-button. These switches have a great 'clicky' sound to it with a nice tactile feel and are perfect when used for a slider, 3D printer, or robot project. Each microswitch is rated for 0.1A at 30VAC

Most microswitches have three terminals labelled C, NO, and NC, standing for Common, Normally Open, and Normally Closed, as shown below.

For regular switch action, connect to the C and NO terminals. The switch will be open when not pressed and closed when pressed.