Encoders are never-ending rotary switches. Found on lots of components in the cockpit such as radio tuning knobs. This page will show you how to connect them to the Arduino Mega.
This has been a massive hit with fellow sim builders and one of the most rewarding projects yet. From hand-cutting, 3d printing or CNC/laser this is a great build to get your sim to come to life!
There is a huge selection of interface cards out there for every sim build . Im yet to find the perfect card but there's few that are more than up to to the job.
Nothing beats these 7 Segments displays for a visual update outside of the software. Then can be a little tricky, but hopefully, this page will get you on the way!