Push-wheel switches are somewhat older technology, but [John Boxall] from the Little Bird Electronics blog shows us that they are still quite useful today. In a quick but thorough demonstration ...

[Ed] was tasked with adding push-button degaussing ... to use an SSR to switch the coil, and after making lots of transistor-based designs on paper, grabbed a nearby Arduino.

Distributor Live Electronics is stocking a range of push-in wiring switches and indicator lamps from Japanese manufacturer IDEC. “By comparison with traditional screw-in connectors, the devices reduce ...