What is it?

This is a board which will allow you to connect 2 stepper motors in series without the need for a cable, In addition to this the board also allows you to connect an individual Normally Open endstop switch for each motor.

When 5v is applied to one of the 2 CTRL port2 it will trigger the relays to allow you to disconnect either motor from the controller so you can square a machine which has 2 motors per axis.

Why did you make it?

I am building a 5 Motor/3 Driver machine which can loose squareness on an axis if it crashes,

Using this board I can create a process lets me manually re-square my machine by allowing individual control of each axis.

What makes it special?

From what I can tell nobody has designed a board for this purpose.