Already the LongMill controller comes with two different input spaces (a JST-XH connector for each axis and a screw terminal connector) that allows easy connection of any kind of switch. If you are ...

With the multicolor pen on board, [TUENHIDIY] notes the importance of limit switches in the design. These allow the the ‘bot to make multiple passes, each time in a different color, to build up ...

To solve the problem without sourcing a new switch, [Jean-Noel] built his own Arduino based Dahlander switch. This consists of three relays that select the wiring configuration for each speed mode.