[ Log In ]
[ Register ]
Database maintenance (5/13/2022 and 5/14/2022 between 9:00 pm to 3:00 am EDT). You may experience reduced performance during this time.
USB controller for CNC Machine Back of the USB controller for CNC Machine control
USB controller for CNC Machine Back of the USB controller for CNC Machine control
Price Options Your Cart
USB Controller for CNC Machines

Planet CNC USB Controller has been discontinued by the manufacturer. Mach 3 USB controller available here. Control your CNC machine from your computer via the USB port commonly referred to as a breakout board. This 4 axis interface serves as an interface between the computer and the motor drivers. Based on the popular MK1 from Planet-CNC, you will need the Planet-CNC software with this board. The software is full featured and very easy to use.


Note: This product is no longer available. The information contained within this page is for technical assistance.

See a complete tutorial on how to wire the CNC electronics associated with this USB CNC controller. To download the control software that will work with this USB interface, click here. Extract the contents of the zip file and install by double clicking the CNCUSB-Setup. The USB interface will already be loaded with firmware so it will work right away.

This interface features the ability to drive 4 axes, optional keypad jogging, multiple outputs to control spindle/mist/coolant and limit and home switches.

Important: There is an error on the USB board. The 5V and GND are switched on the board. Please be aware of this. See the picture for details.

USB breakout board showing error

Ask a question about the DISCONTINUED USB Controller (Breakout):
Previously answered questions:

Click on the question to reveal the answer.
No previous questions. Be the first to ask a question about this product.
USB interface (breakout board) datasheet and wiring diagram

Here is the datasheet for the USB brakout board (interface). Included in this datasheet is the optional keyboard circuit requirements, how the limit switches can be configured, connections to the drivers, and the connections to the mist, flood and spindle.


If your computer is equpped with Windows 8 operating system and you are having difficulties getting the interface to function properly, Windows 8 is requiring the "Driver Signature Enforcement". To disable the driver signature enforcement, follow these steps:

  • In windows, go to PC Settings/General/Advanced Startup
  • Click Restart Now
  • When the menu appears, click Troubleshoot
  • On the next menu, click Advanced Options
  • On the next menu, click Windows Startup Settings
  • The computer will restart and you will be presented with the boot menu. Click Disable Driver Signature Enforcement

you will then need to re-install the planet-cnc software and you will be presented with a prompt to block or allow driver. You will need to allow the driver for the software.


USB Controller Wiring Instructions Part 1


USB Controller Wiring Instructions Part 2

Master Wiring Diagram from USB Controller and 2.5 amp drivers

Master Wiring Diagram from USB Controller and 2.5 amp driver

Get Help with:
This Product
Tech Support
This Product
Order Query
Tech Support
Not logged in. Log In Register
Track Order(s)
View Order(s)
I Want to Schecule a One-On-One Paid Tech Support Session
Book an Appointment Pertaining to a BuildYourCNC Product (Free)
Ask a Quesion Below (Free):
Book an Appointment Pertaining Other Equipment ($60/half hour)
Book an Immedite Appointment Pertaining Other Equipment ($120/half hour)
Ask a Quesion Below (Free):
Waiting for response... I may not answer immediately, but I was notified on my cellular phone so my response is forthcoming. If I don't respond immediately, you can always go to the [My Account] page to see all of our chats at any time.