Jerky movement

All things related to the Centroid Acorn CNC Controller

Moderator: cnckeith

Ken Rychlik
Posts: 566
Joined: Wed Jan 23, 2019 4:19 pm
Acorn CNC Controller: Yes
Plasma CNC Controller: No
AcornSix CNC Controller: No
Allin1DC CNC Controller: No
Hickory CNC Controller: No
Oak CNC controller: No
CNC Control System Serial Number: 80F5B5B92C3A-0213236854
DC3IOB: No
CNC12: Yes
CNC11: No
CPU10 or CPU7: No

Re: Jerky movement

Post by Ken Rychlik »

Keith told you what to do and with a search you will see, a LOT of people have fought the same battle.

Maybe the older versions of software were more forgiving of wiring it to the header? Someone else upgraded to the latest version 4.6 to 5.3 and now his motors won't turn. If you put the same software version that was on the other machines, and configured the same, it might function like they do.
Last edited by Ken Rychlik on Mon Jul 28, 2025 6:04 pm, edited 1 time in total.
Ken


ShawnM
Community Expert
Posts: 3036
Joined: Fri May 24, 2019 8:34 am
Acorn CNC Controller: Yes
Plasma CNC Controller: No
AcornSix CNC Controller: No
Allin1DC CNC Controller: No
Hickory CNC Controller: No
Oak CNC controller: No
CNC Control System Serial Number: 7804734C6498-0401191832
DC3IOB: No
CNC12: Yes
CNC11: No
CPU10 or CPU7: No
Location: Clearwater, FL

Re: Jerky movement

Post by ShawnM »

And not to pile on to your problems but you will have noise issues with a "WOOD" backplane. Component backplanes should be metal and the best option is a galvanized steel backplane.


Farnsbarns
Posts: 12
Joined: Fri Jul 25, 2025 7:12 am
Acorn CNC Controller: Yes
Plasma CNC Controller: No
AcornSix CNC Controller: No
Allin1DC CNC Controller: No
Hickory CNC Controller: No
Oak CNC controller: No
CNC Control System Serial Number: none
DC3IOB: No
CNC12: Yes
CNC11: No
CPU10 or CPU7: No

Re: Jerky movement

Post by Farnsbarns »

Wow, OK. I was told this forum was a bit like this. I haven't said anyone's advice is wrong or unhelpful. I'm just trying to narrow things down.

The wooden backplate is inside a solid steel cabinet. It's also recommend to run spider earthing and avoid earth loops specifically because of noise.

Thanks all for your help. I redid the tool paths this morning. All sorted. Not sure what I had wrong.


ShawnM
Community Expert
Posts: 3036
Joined: Fri May 24, 2019 8:34 am
Acorn CNC Controller: Yes
Plasma CNC Controller: No
AcornSix CNC Controller: No
Allin1DC CNC Controller: No
Hickory CNC Controller: No
Oak CNC controller: No
CNC Control System Serial Number: 7804734C6498-0401191832
DC3IOB: No
CNC12: Yes
CNC11: No
CPU10 or CPU7: No
Location: Clearwater, FL

Re: Jerky movement

Post by ShawnM »

Farnsbarns wrote: Mon Jul 28, 2025 3:45 pm Wow, OK. I was told this forum was a bit like this. I haven't said anyone's advice is wrong or unhelpful. I'm just trying to narrow things down.

The wooden backplate is inside a solid steel cabinet. It's also recommend to run spider earthing and avoid earth loops specifically because of noise.

Thanks all for your help. I redid the tool paths this morning. All sorted. Not sure what I had wrong.
It's not always kittens and rainbows out here on the internet. :lol:

Steel enclosure or not a wood backplane is NEVER a good idea, even with whatever spider earthing is.

You can lead a horse to water but not make it use a metal backplane. :D
Last edited by ShawnM on Mon Jul 28, 2025 6:00 pm, edited 1 time in total.


Farnsbarns
Posts: 12
Joined: Fri Jul 25, 2025 7:12 am
Acorn CNC Controller: Yes
Plasma CNC Controller: No
AcornSix CNC Controller: No
Allin1DC CNC Controller: No
Hickory CNC Controller: No
Oak CNC controller: No
CNC Control System Serial Number: none
DC3IOB: No
CNC12: Yes
CNC11: No
CPU10 or CPU7: No

Re: Jerky movement

Post by Farnsbarns »

CNCKeith's kind efforts to help,.offered in good faith and without attitude, are gratefully received.


Post Reply