Buildbotics CNC Controller

(13 reviews) Write a Review



  • 4 stepper motor outputs (up to 6A each)
  • Control and configure from your web browser
  • Gamepad manual control
  • Remote video monitoring (optional)
  • Wired or wireless, WiFi network
  • 4 USB ports
  • 2 Switched load outputs
  • 8 Limit switch inputs
  • PWM & RS485 (VFD) spindle control
  • Z-axis probe interface
  • 250k steps/second on each motor output
  • 12 to 36 volt input
  • Up to 1/256th microstepping
  • S-Curve path planning
  • Understands all common GCodes
  • 3D Visualization of GCode paths
  • Accurate ETA and time estimates
  • Free CAMotics GCode verification software
  • 100% Open-Source
  • And much more...


60 Day Money-back Guarantee

If you are not 100% satisfied, return the product to us within 60 days and we'll refund the purchase price. Note, shipping costs will not be refunded.

Visible signs of abuse will void this guarantee.


  • The Buildbotics CNC Controller
  • A Logitech F310 gamepad for manual control
  • DB25 breakout box for easy access to all I/O
  • 4 x 10-foot motor cables
  • 1 x DC power supply cable
  • 2 x load switch cable stubs


  • Mean Well GST220A power supply (Fully enclosed 36 volt, 220 Watt power supply)
  • Mean Well LRS-350-36 (36V, 350 watt power supply)
  • Logitech C270 USB web camera

13 Reviews

  • 5
    Excellent Quality and Service

    Posted by Joe - Gainesville, GA on Mar 11th 2019

    After a lot of internet searches and chat room conversations I felt that your product should be the easiest to use. Being new at retrofits, I didn't want something complicated. I have to say I was more than impressed at the ease of assembly and a lower price than the diy kits! It took longer to haul the old monitor out of the closet than to set up the steppers. Not only did everything work as promised, but the service was excellent! I ordered my unit and it was shipped that morning!
    I expect to see great things from such a service and quality oriented business!

  • 5
    Better with Buildbotics

    Posted by Randy on Jan 28th 2019

    I am totally impressed with your Buildbotics controller. I have been looking for a solution to replace the controller for my 6040T CNC machine for several months and feel I have found the perfect solution. My CNC machine itself works well, but the stock controller is poorly constructed and leaves a lot to be desired in functionality. I looked at a number of different solutions, but I was not finding anything that would both replace what I had, without having to connect a jumble of ‘things’ together, and also simplify the work flow.
    When I found the Buildbotics controller, I was skeptical at first and had a few questions which were quickly answered by Doug. Based upon that discussion, I decided to make the purchase. I received the controller in a couple of days and was able to get it setup within a few hours (most of the time was spent adapting the cables to my machine.)

    After running it through its paces, I am very happy with the controller and pleasantly surprised at how much better my 3 year old CNC machine is running. The Buildbotics controller resolved a couple of issues with the stock controller and the various software packages that I have been dealing with for years. With one of the software packages, it would slow down to the point of burning or leaving an indent when transitioning between a line and an arc requiring extra time to sand out. An additional issue I dealt with was when the steppers were cold (< 50 degrees) they would miss steps or not even move (sort of vibrate back and forth) when the feed rate was less than 200 mm/minute, which created an even bigger mess.

    The Buildbotics controller runs at an almost constant feed rate which leaves a much smoother finish and more importantly requires less sanding. I also tested when the steppers were below 40 degrees at a feed rate of 25 mm/minute and it did not miss a step. The stepper motors run quieter and seem to run cooler, and my system now has a better and more confident feel.

    I have also found that having the software, hardware, and stepper drivers in a single package eliminates the complexity and compatibility issues I previously experienced. Being able to control it from a web page on the same system where I do my design work eliminates a lot of steps (both back and forth to the garage and in the workflow.) I am sure I will find a lot more to love about this controller as I continue to use it. From my experience, I would highly recommend this controller, and the guys at Buildbotics have been great to work with. They are extremely responsive and knowledgeable – a pleasantly unique experience in this industry.

  • 5
    CNC Controller

    Posted by Michael Rabin on Dec 23rd 2018

    The Buildbotics CNC Controller is Amazing. I have a CNC with a controller built by another company and it is like comparing a cadillac to a chevy, both will get you there but there is a world of difference in the ride. I have thrown y old controller away. The buildbotics comes with local network wifi compatibility so you can control the controller from anywhere in the house. This is a huge advantage since no one wants to sit in a room with all the sawdust, noise and laser smoke. Most controllers lack PWM (Pulse Width Modulation) but the buildbotics comes with it standard. PWM allows you to modify your CNC to use a LED laser at its fullest capability to burn pictures that are accurate and true- on request I can send some pictures I have burned. The setup and controls are intuitive and well designed. You can tell a lot of thought went into its design, for instance, the control screen gives you both the time the machine will finish the cut/laser as well as a countdown until it is done- and it is totally accurate. It also has an onscreen mockup that will show the machine cutting/lasering the proposed project. It will tell you the percentage of completion and it comes with a game controller which makes moving the spindle/laser to the right spot a breeze. It also seems to control the motors in a much smoother fashion then my old controller. It comes with the optional add-on camera (which I recommend purchasing)so you can see precisely what is happening. If you use this for a laser it is comforting to know that the house isn't burning down. Technical support is also phenomenal. Doug will spend any length of time, at virtually anytime of the day to help solve any issues you might be experiencing. I recommend this unit without reservation. It is well worth the money and hard to appreciate until you actual use it.

  • 5

    Posted by Antoine Brabants on Dec 23rd 2018

    When I started to build my first DIY machine 3 months ago what I feared the most was the controller part. This plug and play controller can support large stepper motors, can control a VFD and have an user-friendly interface.

    I can only highly recommend this product and its customer service.

    Greetings from Belgium,