We’re used to thinking of limit switches as a mechanical device that cuts the motor connection before physical damage can occur. [Anthony] decided to try a different route with this project. He ...

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 ...

To trip the limit switch, the printer simply lowers the z-height until the hotend “probes” the bed, defeating the magnets and breaking the current. Presto! No switches or P.I.N.D.A. probes.