Several push buttons are popular in the Maker arena, including smaller and larger buttons that have legs that fit in a breadboard.

There's four legs so its mechanically more secure when soldering in place on a circuit board, but it doesn't have two switches in it!

There are connections between some of the legs. a is already connected to d and b is already connected to c.

It's hard to remember which pair are connected - even after years of using them, so the best advice is to use opposite corners as the connections - that way you'll always get one from each pair!

In the diagram below, you can see the hookup of the switch (the switch is circled in green) as a standard normally open switch. The opposite corners are connected (a and c) to ensure we have a single pole normally open switch.

This guide was first published on Aug 15, 2018. It was last updated on Aug 15, 2018.
This page (What About Breadboard Switches?) was last updated on Sep 26, 2020.