Advice on reading 5V signal feedback from motor with 3.1V Arduino

Every helper doesn't know what that is.....
Please read this link and update Your post: How to get the best out of this forum - Using Arduino / Project Guidance - Arduino Forum

It's annoying that lots of replies are needed to make the original question understandable and possible to reply to and solve.

The more ignorant a member is the more words are posted. The world among engineers are not words, novels. It's facts, datasheets, flow charts etc.