Acorn Plasma CNC control kits are both a CNC Hardware and CNC Software DIY system designed to work together for easy CNC setup and operation with minimal fuss.
A reliable, high performance, industrial quality Plasma CNC controller with a real time closed loop Torch Height Control at a do-it-yourself price. Acorn utilizes an integrated 1Ghz ARM Cortex A8 Motion Control CPU and communicates with CNCPC via a fast and reliable Ethernet connection.
The Acorn CNC control board controls a wide variety of axis motors and drives
with industry standard step and direction command signal. Compatible with AC brushless servo motor drive packages such as: Clearpath, Delta, Estun, Yaskawa, and many others as well as Stepper motor drives such as the popular Gecko and Leadshine stepper drives and many others. The Acorn CNC controller runs on Centroid's proven industrial quality CNC control software.
The Acorn CNC system has been engineered, built, and tested at our Centroid facility in the USA. All units ship ready to run after thorough testing and quality control.
Acorn CNC controller kit $329
Made in USA Centroid Acorn CNC controller kit (part # 14455) includes:
- Acorn CNC control board
- Acorn Plug and Play Relay Relay Module
- Dual power 5 VDC and 24 VDC logic power supply
(50/60 Hz 100-120 VAC OR 208-240 VAC input power)
- Logic power supply hookup leads
- 110 VAC power cord
- 15’ Shielded Ethernet cable
- Centroid CNC12 "Free" CNC Mill and Lathe software download - Touch Screen Responsive Operator Controls
- DIY self service CNC support thru Centroid Community CNC Forum which is Centroid Technician monitored and maintained.
- Optional Factory Direct Technical Support: $90/hr.
(Note: A 1920x1080 wide screen LCD Display is required)
- $15 flat rate USA ground Shipping. most international orders add $30
Made in USA. Centroid Acorn THC controller kit (part # 15149) includes:
- THC TX control board
- THC RX control board
- 5' Fiber Optic Cable ( TX to RX connection)
- 12" Shielded Serial Cable M/F Straight ( RX-to-Acorn connection) Note: 18" and 36" can be purchased here
- Din Rail Mount 24 volt power supply
- Acorn CNC controller kit (Acorn requirements are here)
- A Hypertherm Powermax Plasma Cutter or Lincoln Flex Cut! (see FAQ's below)
- An Acorn CNC12 Plasma Pro software license (purchase below)
- Restart Mode, backup along part contour and start anywhere
Material Profile Manager
THC Anti Dive controls
- Unlimited G-code file size
- 4th axis G-code moves
- Six WCS locations (G54 thru 59)
- All features of the CNC12 Free are included
After purchase, the License will be sent via E-mail delivery. M-F 8-5 EST USA
Each Acorn Software License is specific to a single Acorn board.
If you are purchasing a license for a previously ordered Acorn kit please email a fresh report.zip file to firstname.lastname@example.org to expedite delivery.
- Unlimited Plasma Intercon conversational programming (now available in beta)
- Includes both a "on the cnc control" copy and a offline "on any Windows PC" copy
- Unlimited Teach Mode
- USB Key allows running of Intercon Plasma on any Windows PC
- All features of the CNC12 Free and Pro are included
- Any future Plasma Ultimate Features
CENTROID PLASMA Wireless MPG CNC control pendant (#9558)
Model: Plasma WMPG-4 for Acorn CNC equipped Plasma machines
$299 w/ $15 shipping to USA
Take the control to where the work is! A game changing tool, the Centroid Wireless MPG handwheel CNC Control pendant allows the operator to conveniently and precisely set up jobs and tools remotely.
No software or drivers to install. Plug and Play with Centroid CNC12 Plasma Pro CNC software, just plug in the included USB transmitter/receiver and start using it!
• Restart Mode, Jog Forward and Backward along the cutter path!
• Laser XY position set
• Use the MPG Wheel to Jog the machine for any kind of positioning.
• Smooth motion
• Sensitivity of the wheel detents are adjusted by the x1,x10,x100 selector.
• Use the MPG Wheel to control the cutting Feedrate on the fly.
• Use the MPG Wheel to control the Target Voltage on the fly.
• 4 axis DRO display
• 4 axis MPG and continuous jogging control
• Robust wireless communication
• No software drivers to install
• Hanger bracket mount w/ magnets
• Long range wireless
• Robust CENTROID developed drivers
• Takes 2 AA batteries, run time approximate 1 month
• USB Plug and Play Transmitter / Receiver
• Rubber case protector
• Tactile Feedback domed buttons w/ gold contacts
• High quality 3M Overlay
Closed Loop THC: Real time closed loop operation between the Arc Voltage and the Torch Height. Fiber Optic Isolation. PID THC control.
Restart Mode: Restart any where along the contour of the part. Backup and/or move forward along the part contour. Restart anywhere. Simple Jog off anywhere along part contour to restart with a lead in. Fast and easy.
Torch Check: Change or Check consumables in middle of the job and restart anywhere.
Dry Run: Run the part program without the Torch and THC on.
Smart Sense: Auto Senses Target voltage during beginning of cut and then maintains the measured TV throughout the rest of the cut
Material Profile Manager: A tested library of plasma settings for common materials and thickness. Choose the Material and Cut. Edit any profile, Create your own profiles. Copy profiles to any other Acorn Plasma equipped machine. Use same part program with any thickness material no need to repost part program from CAD/CAM to cut another thickness metal.
Advanced THC Anti Dive controls: Fine adjustment controls over how the THC behaves. Tested default settings provided but are editable by the user if necessary to fine tune the machine.
Plasma Smoothing: A Centroid exclusive this Plasma Cutting feature produces better cuts with less dross.
User editable Operator Control Panel: This feature allows Users, Rebuilders and OEM's alike a straight forward way to change the look, feel and function of the Virtual Control Panel.
Feedrate and Target Voltage Override controls: On the fly override of both Target Voltage and Feedrate via the VCP and/or the Wireless MPG knob.
Wireless MPG operator control: High performance wireless control pendant with large MPG Wheel for positioning the torch, setting zeros, overriding Feedrate and Target Voltage also has 4 programmable buttons for individualized operator convenience setup controls. Centroid Firmware sets this unit above the rest. Brings a nice work flow improvement to the machine operator with this handy reliable tool.
Auto Torch Touch Off: Compatible with Conductive, Ohmic, Round Mounts and Floating Heads. Conductive/Ohmic can be used in conjunction Float Head/Switch and/or Breakaway Head/Switches. Easy drag and drop for Float Head and Breakaway setup menus in the Acorn Plasma setup Wizard, Auto Float Head offset distance compensation.
Built in Conversational Programming: Program plasma parts with or without a CAD drawing with Centroid's Intercon Plasma. Lines, Arcs, Squares, Circles, Rectangles, Kerf offset, Auto lead in/out, auto connect radius, Mirror, Rotate, Repeat, Teach Mode, DXF in, DXF out, now available in beta and included with the Plasma CNC12 installation.
Made in USA: The Acorn Plasma system was engineered, built, and tested at our Centroid facility in the USA. Robust design, Rigorous testing = Years of trouble free operation. CNC Software and Hardware designed to work together. All units ship ready to run after thorough quality control and testing.
Built-in Material Profile Manager
- Use the same part program to cut different thickness and types of metals
- Large library of tested Plasma Material Profiles included
- Edit any profile
- Rename any profile
- Create your own custom profiles
- Share Profiles with others.
- Easy copy and use profiles on any other Acorn Plasma equipped machine
- Simple Part Program G codes are easy to understand
- Eliminates need for complicated post processors and complicated G codes
- Compatible with most any Plasma CAD/CAM system
Acorn Plasma FAQ's
1.) Can I use a non Hypertherm Powermax Plasma cutter with the Centroid THC? Answer: Currently the Acorn THC supports Hypertherm Powermax Plasma units and Lincoln Flex Cut unit.. We will add other manufactures plasma units to a compatibility list in the future. For now, Acorn Plasma THC is supported with a Hypertherm Powermax XP and SYNC Plasma or Lincoln Flex Cut cutters. (Note: We are currently working on testing a Thermal Dynamics unit).
2.) Can I use a non THC supported Plasma cutters with the Centroid Acorn Plasma Software? Answer: Yes. For applications that do not require a THC but want to take advantage of the Plasma CNC software. (Note: In the future Oxy/Flame specific features will be added as well.)
3.) Does the Centroid THC work with other CNC controllers? Answer: No. The Centroid THC is designed to work with the Acorn CNC Controller using the Acorn's high speed serial port for real time Torch Voltage Feedback.
4.) Can I use the Acorn Plasma CNC12 software to cut parts without the THC kit installed? Yes.
5.) Can I use a 3rd party Ohmic Sensor/Isolator? Answer: Yes
6.) Can I use a Round Mount? Answer: Yes, Round Mounts perform two duties, The Float Head Torch Touch off sensor and a Breakaway/Collision Sensor.
7.) Can I use a Floating Head? Answer: Yes, Floating Heads and switches are supported.
8.) Can I use a Magnetic Breakaway Head? Answer: Yes, We recommend Magnetic Breakaway Torch Mounts (and they can be used in conjunction with a Floating Head (slide)).
9.) Can I use a Floating Head in combination with Ohmic/conductive Torch Tip? Answer: Yes
10.) Can I use a Floating Head that has Breakaway switch built into it? Answer: Yes
11.) Does the Centroid THC work with the Oak and Allin1DC CNC Controllers? Answer: No. Not at this time.
12.) Do I have to Home the machine to use it? Answer: No. Setting up and using Auto Homing is recommended but not necessary to use the machine.
14.) Can I use a Laser dot or cross hair to set a start point? Answer: Yes
15.) Can I use a scribe to mark the material instead of cutting it? Answer: This feature will be added after our initial public beta release and will be a free software upgrade
16.) Can I run the part program without the Torch running? Answer: Yes. select the "Dry Run" button to run the job with the Torch Off.
17.) Can I use a 3rd party THC (non Centroid) with Acorn? Answer: No. We do not support other manufactures THC's.
18.) Where can i get help and tech support? Answer: Free online Plasma Tech Support Forum. Centroid owns this forum, maintains, monitors and contributes to it daily. Here is the link.
19.) Is the software license file a subscription? Answer: No. A Plasma Pro software license is tied to the Acorn board itself and is a one time purchase.
20.) Can I install my Acorn CNC12 Plasma Pro License on another PC? Answer: Yes. A Plasma Pro software license is tied to the Acorn board itself NOT the PC. This allows for easy DIY upgrade or replacement of the PC without having to get a new license file.
Vary part backplot speed and pause
w/ G-code line display
Real Time Part Graphics, shows tool position while running
User editable Subprograms and Macros
Engraving compatible (short vector g code no problem)
Run in Inch or MM mode
Laser cutting and engraving support
PWM output control for Laser and/or Spindle
Long part names
USB and Network Drive Compatible
Distance to go DRO
Machine Coordinates DRO
Active G codes display
Software or Hardware paired axes
Auto Squaring of paired axis Gantry
Control relays and contactors thru Manual or Program control
User configurable custom DIY M-codes
X/Y axis Deskew, corrects for axes out of square.
Mouse and Keyboard jogging in addition to VCP, MPG Pendant and Xkeys pendant, Contour Shuttle
Runs on 100-120 VAC OR 200-240 VAC power input.
Runs on USA and International Power
Use your own PC OR purchase a Centroid CNCPC
All-in-one Touch Screen CNCPC $1350
- Preloaded with Windows 10 or 11 and pre-configured for CNC PC duty
- Preloaded Centroid CNC software with G code Editor,
Intercon, Stock PLC programs, Acorn Install Wizard, Touch Screen
Operator Control panel.
- Touch Screen
- Wifi, Ethernet, webcam with mic, card reader, usb ports
- Powercord, Keyboard, Mouse
- Centroid tested and pre qualified to work with Centroid CNC controllers
- Compatible with Acorn, Oak, and Allin1DC - Model, Specifications and COLOR may vary.
Note: There are NO VESA mounting holes on this unit.
Planning to build or use your own PC as a CNCPC? Be sure the PC meets the Centroid CNCPC minimum requirements found here.
Centroid CNC software runs on a Windows 10/11 PC that meets the requirements. Laptops are not recommended. Tablets are not compatible.
The minimum CPU performance benchmark is critical for good Plasma Performance. Mobile processors are not compatible.
- If you plan to build your own CNCPC follow the CNCPC requirements here.
- If you plan to buy your own PC we recommend the Intel NUC (be sure to purchase a NUC that meets the Centroid minimum pc requirements) and a 1920x1080 monitor
Centroid NUC CNCPC $1050
- Allows use of any size and type LCD Touch screen. (1920x1080 recommended) or regular LCD monitor.
- Intel SSD for the best performance
Preloaded with a licensed copy of Windows 10/11 and Windows is pre-configured for CNC PC duty
- Preloaded Centroid CNC12 Plasma software
- Pre configured Notepad ++ G code Editor
- Centroid CNC setup Wizard
- Touch Screen Operator Control compatible
- Intel I3 processor, 4GB ram, SSD (solid state drive) - Centroid tested and pre qualified to work with all Centroid CNC controllers
Ether1616 i/o expansion kit for the Acorn CNC controller (#14850) $299
The Ether1616 is an input and output expansion board designed to be used with the Acorn CNC controller. Each Ether1616 board adds an additional 16 optically isolated inputs and 16 relay isolated outputs to the Acorn CNC system, up to three Ether1616 boards can be added to an Acorn system for a total of 56 inputs and 56 outputs. Three different input voltages can be used: 5 volts, 12 volts and 24 volt. Input voltages are mix and match capable and are selectable via bank of four of inputs at a time with the provided plug-in SIP (Single In-line Pack) resistors. The default input voltage is 24 VDC.
Both the Ether1616 and Relay 8 modules provide both Din Rail mounting holes and Standoff mounting holes to allow the DIY installer a wide variety of mounting possibilities,
The provided dedicated power supply is sized properly to provide enough power to drive the 16 relays.
There are indicator LED’s on Ether1616 Inputs and on the Relay 8 Modules that indicate the state of the Inputs and Outputs.
1.) Ether1616 Board
2.) Qty 2 Relay 8 Modules
3.) Qty 2 Keyed Ribbon Cables
4.) 24 volt DC power supply
5.) Ethernet Switch
6.) Qty. 2 Shielded Ethernet cables
7.) Qty 4 220 Ohm SIP resistors for 5 volt input
8.) Qty. 4 1k Ohm SIP resistors for 12 volt input
Estop Button with 2 contact closures $45 #14534
- Industrial quality reliable Emergency Stop Button with two switches.
- Two contact closures for two estop circuits
- Use just one contact closure or use both
- For use with the Acorn CNC control board.
REPLACEMENT Acorn Relay Board and Ribbon cable $27
If you are purchasing a new Acorn kit, you do not need to purchase this item.
The Acorn Relay Board Kit (part #14734) Includes:
- Acorn “8 Relay Module”
- Ribbon Cable
Purchase Centroid Factory Direct Technical Support. Professional experienced Centroid CNC control engineers will work with you to configure your CNC machine tool. Centroid Direct Technical Support is provided through Phone, E-mail, and preferred and most effective method is remote support via TeamViewer.
"Looking to order boards and other parts from you this week. I've got to admit - SO NICE having a board and software made by the same company. No plug ins from other places and the headaches. Literally followed the video and the motors were turning by the time it was done. -Revy
"After dealing with Mach 3 and LinuxCNC for years, I must say Centroid is Light years ahead. Up and running bench test in a matter of minutes instead of days as with those other products. There is much to learn about Centroid but I am confident it is a very solid product. I can't find the words to properly describe the difference." - Makeron.
"My son came to me and said that the students in his high school woodworking class could not finish their projects due to their CNC router is broken. Well I couldn't let this be and in less than an hour, I installed a acorn on their router and all the students were able to finish their projects. I donated the board to the school so they could continue to use the router and many students will be able to familiarize themselves and use the Centroid control. Thank you Centroid for making such an awesome easy to use and install product. Keep up the good work!" - Extreme industrial
cnc_jim wrote: ↑I have to say a big THANK YOU to Centroid for providing the best value in DIY CNC on the market today. I just completed the upgrade of my CNC router table to Acorn and couldn't be happier! Followed the schematics for the GeckoDrive 203V (only thing I kept from my old controller) and everything just worked without any issues. Watched a lot of video's that provided almost everything I needed to get my machine working. I saved so much money over upgrading to Mach4, Smooth Stepper and PMDX boards that I had planned for my initial upgrade that I bought a touch screen monitor, wireless pendant and upgraded to Mill Pro. The pendant is just amazing to use. I feel like I have a professions system now! Not sure how you can sell the entire acorn kit for the price you do, but thank you for providing this to the DIY community.
Yesterday, I received a model 4 Acorn and an extra relay board for my model 3 Acorn that I bought almost a year ago. Opening that package reminded me of the care and concern that Centroid has for its customers. The power supply was pre-wired for the Acorn. The instruction sheet is comprehensive. The backside of the instruction sheet that shows a connection schematic that should make initial connections fool-proof. I just noticed that even those schematics are printed in color. (My eyes have serious problems.) The new schematics that Keith notified us of have fixed all of the connection problems that I've experienced with ClearPath servos, Gecko G203 drives, and Leadshine (clone) drives. Those problems were not Centroid's fault. (The older schematics followed wiring diagrams from other manufacturers that were somewhat lacking. I've read Teknic's manual carefully about the fault signal. The older schematics followed the Teknic manual. Keith and Gary solved that problem months ago, but because I had a work-around, I didn't carefully read the revised schematic that Centroid published months ago.) I was able to work around those problems; but the new schematics make those work-arounds obsolete. It amazes me that Centroid is willing to spend money on so many do-it-yourself motors, drivers, spindles, VFDs and other non-Centroid products, test those products, draw up schematics to use those products and still sell the Acorn for $329 with the amazing Centroid software.
Next, the forum along with YouTube videos are great. Keith, Marty, Gary and Franco not only show how to use the Acorn, but teach general principles about CNC machining. Late last night when I couldn't sleep, I watched a video where Keith showed how to use a vertical mill. The video contained everything that anyone would need to see how to use Centroid products to make their equipment work. Clicking on "Acorn User Videos" from the Acorn page shows a list of videos that show how to use the Acorn. Going on YouTube and searching "Marty CNC" brings up Marty's channel with a comprehensive list of how-to videos. Searching "Gary Campbell CNC" brings up Gary's channel and his expertly produced videos. (Gary and I go back decades to my Shopbot days when I constantly used his advice to solve my problems.) Clicking on "Centroid CNCKeith" brings up Keith's videos. His knowledge and easy-going style should make anyone comfortable in trying an Acorn. One of his videos was with "MecTechMike". Mike's mill and lathe conversions should impress everyone. He surely impressed me and gave me ideas that will take at least a year to try. There are many, many others who have taken the time to post videos showing how they use the Acorn and other Centroid products.
The forum is invaluable. Questions are answered expertly (in most cases). Since I tend to be disruptive in some of my posts (unintentionally - I like to think outside the box and try things that might seem to be controversial), I expected harsh feedback or even censoring, but I've been treated with respect and courtesy. More, importantly, by reading what others are doing, I get ideas that would take a life-time to implement.
Thanks Centroid and thanks to all of you in the Acorn community for your help.M Richards
All prices and specifications are subject to change without notice