Minimum Components and Tools needed to build an Acorn based CNC control:
- Centroid Acorn CNC controller kit
- A Windows 10 PC that meets the Centroid Acorn Minimum CNC PC requirements, see below
- Typical electrical assembly tools, multi meter, wire stripper, screw drivers, crimp connectors, etc.
Unpack and familiarize yourself with what is included with Acorn cnc controller kit, download the Centroid Acorn hookup schematics to follow.
1.) Do not use the USB port found on the Beagle Bone Motion control CPU. The USB port is used for stand alone Initial firmware installation ONLY. (Centroid CNC12 software will automatically update the BBG firmware so no need to use this port once the BBG is connected to the Acorn) Using this port whle connected to tha Acorn will casue damage. The Acorn CNC controller communicates with the CNC PC via the Ethernet connection NOT the USB port. The Acorn board is NOT powered thru the USB port. Do not plug anything into the USB port. The Beagle Bone is preloaded with the proper firmware at Centroid and is installed onto the Acorn board and tested before shipping so everything is ready to run. No need for user to install firmware.
2.) Do not de-power the Acorn board while CNC12 software is updating the firmware on the Acorn board. CNC12 software will usually update the firmware on the Acorn Board the first time it communicates with the Acorn board and/or during the first time a new version of CNC12 is started. CNC12 will say "MPU Rebooting". DO NOT power off the Acorn board at this time.. let CNC12 finish the firmware updating process. It is safe to restart the CNC12 software at any point..just don't remove the power from the Acorn board during CNC12 initialization if it is updating the firmware on the Acorn board. If the firmware does get corrupted due to a power removal, you "bricked it" (corrupted the firmware). You know if you "bricked it", if the Acorn board's blue Heartbeat light is not flashing once per second.. The heart beat light lets you know that the firmware on the Acorn board is up and running and is ready to connect to CNC12. If no heartbeat then the Acorn CPU called a BBG (Beagle Bone Green) will have to be "De bricked". It is a simple procedure explained here...(note the de bricker instruction can also be used to "build" your own BBG for Acorn use.)