No really an grbl issue, but I didn't find anywhere a grbl forum to submit my problem: In my machine I have made a custom arduino shield on which the limit switches are on the analog pins (A0-A2, p ...

A limit switch interface for 3018 and 1610 cnc machines There are a bunch of low cost cnc engraving machines loosely called ‘3018’ as they cut material up to 30 x 18cm, and the same parts are used in ...