keyestudio CNC shield V4 is used as driving shield for engraving machines, fully compatible with NANO control board . So you just need to stack the Nano board onto the shield when using.
It has total 3-way pin slots for stepper motor drive modules (Not Included) to drive 3-channel stepper motors.
Each stepper motor only needs 2 IO ports, so 6 IO ports is enough to manage 3 stepper motors, very easy to use. This shield can make quick work for managing stepper motors in your project.
To easily debug the operating mode of stepper motor driver board, there are 3 jumper caps under each pin slots. You can set the working mode by plugging or unplugging the jumper cap.
For example, connect the A4988 to the shield, unplug three jumpers, it is in full-step mode; if plug all the jumpers, it is 16-subdivision working mode.
Different kinds of interfaces are brought out on this shield, so you can connect some external devices as you like.