[Ravihotwok]

Hello everyone,

I have upgraded my spindle to a 400w brushless spindle.

I would like to connect it and power it from my planet mk3/4 control board and enclosure. Can anyone explain the way to do it in laymans terms. I have attached some pics to help explain



This is the power supply within my enclosure

there is something called an octocupler which I have no idea what it does but I here is a pic of it in case it is needed

[Ravihotwok]

[PlanetCNC]

You should connect output pins* of Mk3/4 controller with control inputs of your spindle driver.

Output pin* configuration in CNC USB controller software: File/Settings/Output/Spindle&Coolant:
ON/OFF -> Set to Pin 1
Direction -> Set to Pin 2
Speed (PWM option enabled below) -> Usually pin 6


Based on the pictures that you have attached:
MOTOR +- is where you connect your spindle motor
Power+- is where you connect power supply for spindle driver.


You should connect PWM pin from controller to 0-5V input of spindle driver unit.
Check if +5V input of this unit is for motor enable (meant as ON/OFF)

It would be very helpful to have any user manual of this unit.