Shift in Z-axis Hi! I have a ORD BOT Hadron + Rumba Controller + Bulldog Extruder + E3D-V5 + 64A + hotend Running the latest Repetier firmware + Repetier Host. This is a New printer that I `m trying to configure/fine tune. I have made a simple qube 20x20x20mm in sketchup that I have printed using Repetier, and the printed result is fine and the qube meashures 20x20x20mm +/- 0,0xxmm But then I made a larger test qube that is 40x40x40mm With some holes.. - when I try to print this it start without any problems, but after some layers (ramdom when) the Y axis shifts 1-3mm. I have tested 4 times - in one test it shifted after printing 30mm (height), an other after 5-6mm.. I have mounted a fan cooling the drivers, so I do not think heating is an issue, and the belt.. seems fine When moving the heated bed in the Y axis manually all seems fine The latest print was With default print speed at 130, but have tested as low as 80 Any hints on why I have this problem, where to start trying to fix it? https://reprap.org/forum/read.php?267,301426,301426#msg-301426 Sat, 16 May 2026 04:04:29 -0400 Phorum 5.2.23 https://reprap.org/forum/read.php?267,301426,395383#msg-395383 Re: Shift in Z-axis https://reprap.org/forum/read.php?267,301426,395383#msg-395383 i wonder whether they are aware about it

check this answer
[groups.google.com]]]> faboratory Repetier Fri, 15 Aug 2014 21:32:49 -0400 https://reprap.org/forum/read.php?267,301426,395189#msg-395189 Re: Shift in Z-axis https://reprap.org/forum/read.php?267,301426,395189#msg-395189 i narrowed the problem down the the "rumba vs ramps" issue.
i guess the board is not as well designed as the ramps in some way.

i think more people might be having this issue -if not every rumba user-
but i think most of the people prints rather small objects so the problem is some times not noticed. at least that's for some people i know
also it might be less -as in smaller displacement- problematic on cartesian bots. if one axis misses steps in a delta bots you not only get a shift but a tilt, so the layer bonding is totally f***ed up]]> faboratory Repetier Fri, 15 Aug 2014 09:28:27 -0400 https://reprap.org/forum/read.php?267,301426,395188#msg-395188 Re: Shift in Z-axis https://reprap.org/forum/read.php?267,301426,395188#msg-395188
I think there was a software bug back when I had the skipping problems.]]> mundsen Repetier Fri, 15 Aug 2014 09:22:07 -0400 https://reprap.org/forum/read.php?267,301426,395174#msg-395174 Re: Shift in Z-axis https://reprap.org/forum/read.php?267,301426,395174#msg-395174
yes, i had a huge fan, and heatsinks
its not diver related, sine i tested the same drivers on a ramps and rumba boards.
with any rumba i had missing steps. i'm not totally sure it's always the y axis -since i have a delta paralel bot- but i think so

i didn't try using an empty driver slot instead of the y-axis slot, and i will next week when i'm back home. then i will post the results here.]]> faboratory Repetier Fri, 15 Aug 2014 08:52:59 -0400 https://reprap.org/forum/read.php?267,301426,395090#msg-395090 Re: Shift in Z-axis https://reprap.org/forum/read.php?267,301426,395090#msg-395090
Do you use a fan to lower the temperature on the stepper drivers?

Have you tested adjuring the stepper driver current?]]> mundsen Repetier Fri, 15 Aug 2014 03:39:37 -0400 https://reprap.org/forum/read.php?267,301426,395024#msg-395024 Re: Shift in Z-axis https://reprap.org/forum/read.php?267,301426,395024#msg-395024 did you get any feedback from reprapdiscount?

i think i have the same issue. the problem is i have a delta so it's not easy to debug wigh of the axis is missing steps.
definitely though there is something going on with the rumba boards.
i have tested on the same machine diferent rumbas and a ramps board. even swaping the drivers to make sure its not a driver problem.
with rumbas the prints get a z-shift every hour aprox, most probably due to some axis missing steps. i previously had the rumba installed in a prusa i3 and it already missed steps on the y axis.

this rumbas are already one year old. i thought it might be an error on one of the first batches or maybe some time-ruined components.
i bought a new board 2 weeks ago and i have the same problem.]]> faboratory Repetier Thu, 14 Aug 2014 20:27:42 -0400 https://reprap.org/forum/read.php?267,301426,308077#msg-308077 Re: Shift in Z-axis https://reprap.org/forum/read.php?267,301426,308077#msg-308077
Quote
lynnroth
So, this has seemed to solve my Y-axis skipping issue as well.

Is there something wrong with all the Rumba boards that causes this?

Hi, have sent a mail to reprapdiscount about this - I`ll report back when they answer.

Did you have to Mirror the Y and one of the extruder output like me?]]> mundsen Repetier Sat, 08 Feb 2014 09:08:02 -0500 https://reprap.org/forum/read.php?267,301426,308050#msg-308050 Re: Shift in Z-axis https://reprap.org/forum/read.php?267,301426,308050#msg-308050
Is there something wrong with all the Rumba boards that causes this?]]> lynnroth Repetier Sat, 08 Feb 2014 07:43:42 -0500 https://reprap.org/forum/read.php?267,301426,304135#msg-304135 Re: Shift in Z-axis https://reprap.org/forum/read.php?267,301426,304135#msg-304135 Strange that E2 did not work without mirroring Y and E2..

Is there a fault on my Rumba Controller then?]]> mundsen Repetier Fri, 31 Jan 2014 17:11:26 -0500 https://reprap.org/forum/read.php?267,301426,303704#msg-303704 Re: Shift in Z-axis https://reprap.org/forum/read.php?267,301426,303704#msg-303704 But then I mirrored the Extruder 2 output to Y and it Works when Connected to E2

Did a small test print when the Y steper was Connected to E2, and I got the best print so far - I`ll do a test on a larger print later today.]]> mundsen Repetier Fri, 31 Jan 2014 01:04:12 -0500 https://reprap.org/forum/read.php?267,301426,302723#msg-302723 Re: Shift in Z-axis https://reprap.org/forum/read.php?267,301426,302723#msg-302723 repetier Repetier Wed, 29 Jan 2014 02:57:05 -0500 https://reprap.org/forum/read.php?267,301426,302635#msg-302635 Re: Shift in Z-axis https://reprap.org/forum/read.php?267,301426,302635#msg-302635
I have tested selecting Stepper Socket Extruder 1 and I have tested Extruder 2. but still I\M only able to move the Y axis when it is connected to the Y socket

Any idea why?]]> mundsen Repetier Tue, 28 Jan 2014 18:21:48 -0500 https://reprap.org/forum/read.php?267,301426,302241#msg-302241 Re: Shift in Z-axis https://reprap.org/forum/read.php?267,301426,302241#msg-302241 repetier Repetier Tue, 28 Jan 2014 03:56:21 -0500 https://reprap.org/forum/read.php?267,301426,302019#msg-302019 Re: Shift in Z-axis https://reprap.org/forum/read.php?267,301426,302019#msg-302019 mundsen Repetier Mon, 27 Jan 2014 16:17:48 -0500 https://reprap.org/forum/read.php?267,301426,301648#msg-301648 Re: Shift in Z-axis https://reprap.org/forum/read.php?267,301426,301648#msg-301648 chngyian - is it normal that the motors get hot? On a small print like this?]]> mundsen Repetier Mon, 27 Jan 2014 04:20:02 -0500 https://reprap.org/forum/read.php?267,301426,301643#msg-301643 Re: Shift in Z-axis https://reprap.org/forum/read.php?267,301426,301643#msg-301643 chngyian Repetier Mon, 27 Jan 2014 03:55:52 -0500 https://reprap.org/forum/read.php?267,301426,301629#msg-301629 Re: Shift in Z-axis https://reprap.org/forum/read.php?267,301426,301629#msg-301629 repetier Repetier Mon, 27 Jan 2014 03:22:19 -0500 https://reprap.org/forum/read.php?267,301426,301590#msg-301590 Re: Shift in Z-axis https://reprap.org/forum/read.php?267,301426,301590#msg-301590 Have swapped stepper drivers on the Y output With one of the unused ones. I`ll do a New test later today.]]> mundsen Repetier Mon, 27 Jan 2014 01:08:23 -0500 https://reprap.org/forum/read.php?267,301426,301487#msg-301487 Re: Shift in Z-axis https://reprap.org/forum/read.php?267,301426,301487#msg-301487 repetier Repetier Sun, 26 Jan 2014 18:05:20 -0500 https://reprap.org/forum/read.php?267,301426,301434#msg-301434 Re: Shift in Z-axis https://reprap.org/forum/read.php?267,301426,301434#msg-301434 LarryJ Repetier Sun, 26 Jan 2014 15:55:01 -0500 https://reprap.org/forum/read.php?267,301426,301426#msg-301426 Shift in Z-axis https://reprap.org/forum/read.php?267,301426,301426#msg-301426 I have a ORD BOT Hadron + Rumba Controller + Bulldog Extruder + E3D-V5 + 64A + hotend Running the latest Repetier firmware + Repetier Host.
This is a New printer that I `m trying to configure/fine tune.
I have made a simple qube 20x20x20mm in sketchup that I have printed using Repetier, and the printed result is fine and the qube meashures 20x20x20mm +/- 0,0xxmm
But then I made a larger test qube that is 40x40x40mm With some holes.. - when I try to print this it start without any problems, but after some layers (ramdom when) the Y axis shifts 1-3mm.
I have tested 4 times - in one test it shifted after printing 30mm (height), an other after 5-6mm..
I have mounted a fan cooling the drivers, so I do not think heating is an issue, and the belt.. seems fine
When moving the heated bed in the Y axis manually all seems fine
The latest print was With default print speed at 130, but have tested as low as 80

Any hints on why I have this problem, where to start trying to fix it?]]> mundsen Repetier Sun, 26 Jan 2014 15:44:41 -0500