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Acorn CNC Controller with Ethernet Connection, Free Centroid Software

Acorn CNC Controller with Ethernet Connection, Free Centroid Software

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Acorn CNC Controller with Ethernet Connection, Free Centroid Software

Product Description

Acorn CNC Controller with Ethernet, Free Centroid  Software

(Set IP Address:,  Subnet Mask:

Acorn kit includes Centroid "Free" CNC Mill and Lathe CNC software!

Centroid Acorn SainSmart Relay Module adapter kit :

Link to the Acorn documents for your reference.

Link to the Tech Sheet for the new Acorn Relay Module kit for your reference.

Centroid Acorn CNC controller kit (part # 14455) includes:
- Acorn_REV4 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.

Wiring Diagram & Downloads

Acorn CNC Controller Wiring Diagram (802 downloads)

Bonus! Acorn Relay Module now included with all Acorn CNC controller kit orders

Plug and Play Relay Outputs with the Acorn CNC Relay Board! Direct connection to the Acorn board with the supplied ribbon cable makes connecting and getting a relay board up and running a 5 second operation. The Plug and Play relay module allows CNC controlled connections to various CNC devices such as VFD’s, solenoids, lights, fans, pumps, motors, other larger relays and contactors in a compact format. The 8 relay module contains eight SPDT (Single Pole Double Throw) high current relays (10 AMPS at 250 VAC,and 10 amps at 30 VDC) which can directly control any device rated at or below the maximum rating of the relays. If higher current devices are required these relays can then in turn control larger relays or contactors to control the higher current device! Relay module has on board LED indicator lights for each relay

(Note: A 1920x1080 wide screen LCD Display is required and a Touch Screen is recommended.)

1.) The PC CPU must have a SINGLE CORE minimum benchmark of 1500.  You can look up a CPU’s benchmark # using this web site.


Notice that this is the “Single Thread” benchmarks chart.
Using a CPU with a single thread  benchmark rating higher than 1500 is required

2.) While not required...it is highly recommended to use a SSD (solid-state drive)  We only recommend Intel or Samsung SSD’s

3.) minimum 4 Gig’s of Ram

4.) Windows 10 that is configured for CNC control use see Step 2 below.

5.) Ethernet port

6.) An LCD monitor with a 16:9 aspect ratio

Free Centroid Software download
Acorn CNC Controller Specifications Manual

Centroid Acorn CNC Control System or  Better Than Mach3 or Mach4

Centroid Acorn CNC Basics

Centroid Acorn CNC Basics - Win 10 PC Setup and benchtest

Power and Ethernet to the Acorn CNC control board

Bench Test Running Motors

A Closed Loop Stepper Driver Test

Centroid Acorn CNC Discuss Forum

Acorn CNC controller Hookup Schematics

Acorn tech support is available on of Centroid Tech support forums.

If you have a question and you can't find the answer on the forums, please post your question.

A lot of our users are also using the Centroid Acorn Facebook group to ask questions. https://www.facebook.com/groups/897054597120437

Your wiring question might be answered by browsing the schematics.


Sign up for free tech support here is the link.


Link to set up


Additional Details