The reason why I'm sticking with the Hackaday design is because the front end is recommended by Bourns with their rotary encoders (page 3).

https://www.bourns.com/docs/Product-...ets/PEC11R.pdf


I figure if they can recommend this design with their products, it's gotta have some merit when you consider how easily liability lawsuits get thrown around in the US.

Unless I'm mistaken, the Elliot Williams design from Hackaday that I'm using is exactly the same, but with the Schmitt Trigger added at the back end.


About that other technique of just storing the state in a bunch of bits, and then checking for a "clean press", Elliot encountered a problem with a "janky button".

https://hackaday.com/2015/12/10/embe...i/#more-180185