I presented in a old post the parts of the CNC control. I use 2 stepper driver for the y axis an one for the x and z axis. I mounted the breakout board on the MDF panel but I didn’t use it, it’s only to know where it is. For the control of the CNC I choose Estlcam. It work like GRBL and need a Arduino uno for the control, so I connect the Arduino directly to the drivers. Between the driver I installed an old CPU fan to cool the driver. I don’t know if the fan is necessary. Here a few pictures on the control.