Most RTs also has built in ‘push-on’ momentary switch, usually one side has 3-pins (two coding ... Now that your rotary encoder hardware is up and running it’s time to tell your Arduino what to do ...

[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.

Did you know that you can use Arduino to turn on an LED when you press a button? Well, it is true, you can do this! Leaving the joke aside, let me show how you can achieve this. You will need the ...