Centroid Community CNC Support Forum

Not quite sure what happened . Acorn was previously working came home and ran a backlash test reset back lash compensation to match what I measured and rebooted cncpc and acorn and no response from acorn now as I did shut down cncpc first and followed by powering down acorn but since I cant get it back up .I did try the unbricking procedure and even there I don't get 4 lights just one solid I read where one other user had same thing but was able to get his up by reinstalling and booting so I tried with no luck .I am able to ping with 10.168.41.1 with 4 response back but no response from 10.168.41.2 I did try different Ethernet cable no go measured voltage to board 24.1 volts Not sure whats happened here I did make sure no virus software running as only virus on the pc is windows defender and it is turned off oh I am running Centroids touchscreen that had software preloaded Ive been using for about 2 weeks now with no Issues any help would be very much appreciated at a loss here Thanks in advance Jeff.

RESOLVED

Added by diycnc:
When the unit was returned to Centroid, the problem was determined to be corrupt firmware. The unit was returned to operation by following the debricking procedure as depicted here: https://youtu.be/x7Wk6ocPfwY

FWIW This video was not available to Jeff at the time he ran into this. We are confident this video will get you back up and running quickly in the unlikely event that others run into this. Please follow the video closely and you will be back up and running in 5 minutes.

Jeff,
can you post a screen shot of the files on the SD card? and verify that the SD card was indeed in Fat32 format. thanks Keith

I've updated the debricker page with better instructions.
and Marty made a great video showing how to debrick the BBG.
here is the link.
http://www.centroidcnc.com/centroid_diy ... icker.html

All is good now Kieth Thankyou

jhop28 wrote: ↑Sat Nov 04, 2017 8:15 pm All is good now Kieth Thankyou

Were you able to debrick OK? It was the first time I did it in the video. Kind of nerve wracking debricking a perfectly good Acorn.
Took another one for the team though.
Marty

I also had this happen, just writing different configs to the Acorn. Sudden no heart beat. I tried repeatedly and it would just not communicate from the PC to the Acorn. I decided to reboot the PC, because even the ethernet lights did not work correctly. Then turned on the Acorn and it came up just fine. I have only seen this happen one time and have written many changes in the configuration as I test each new element as I get them all wired up.

Russ

cncman172 wrote: ↑Mon Nov 06, 2017 12:49 pm I also had this happen, just writing different configs to the Acorn. Sudden no heart beat. I tried repeatedly and it would just not communicate from the PC to the Acorn. I decided to reboot the PC, because even the ethernet lights did not work correctly. Then turned on the Acorn and it came up just fine. I have only seen this happen one time and have written many changes in the configuration as I test each new element as I get them all wired up.

Russ

Exactly, always try a complete shut down of Acorn and the PC, restart.
MAKE SURE YOUR ETHERNET DRIVERS ARE UP TO DATE too. You have to go to the PC or mother board manufacturer's website to get them.

If you find that that there is no power LED or hearbeat LED on your Beagle Bone Green(BBG). STOP!

Don't be so quick to assume that it has died!

Do some trouble shooting procedures first:
1. Disconnect the ethernet cable from Acorn
2. If you have removable headers (Acorn Hardware Revision 3) unplug ALL but the power connector
3. Power up Acorn and see if the power led comes on and heartbeat returns.
4. If it DOES, then power it down and plug the Ethernet cable back into BBG and retest. If heartbeat is present, try and start CNC12 to see if it comes up (communication established)
If heartbeat DOES NOT come up with everything disconnected from Acorn, but the power led on Acorn does, then proceed to the debricking procedure.
If your BBG is dead, then you may order a Beagle Bone Green from a supplier of your choice, and then perform the debricking procedure to load the Centroid firmware back on Beaglebone.

If you have an older Acorn hardware revision, take a picture of which terminal your wires go, mark the wires and disconnect them follow the procedure outlined above.

If the Acorn heartbeat comes on and then goes off as the PC boots, disconnecting the ethernet cable may help diagnose this.

Lastly, if no heartbeat, pull BBG off the Acorn mainboard and power it up via the mini USB port on BBG as if you were going to debrick it. Does it boot up and heartbeat LED come back? If so, could be an issue with the Acorn board.

Just don't be so quick to assume BBG has died without doing basic test procedures first. I have been through about a dozen+ Acorn builds and haven't had one go bad on me yet. But I have had the heartbeat not come on, and found it was something OTHER than BBG.

Marty