# Several wierd issues

**URL:** <https://forums.maslowcnc.com/t/several-wierd-issues/23256>\
**Category:** Troubleshooting\
**Created:** [January 27, 2025, 12:23am UTC](https://forums.maslowcnc.com/t/several-wierd-issues/23256 "2025-01-27T00:23:43Z")\
**Posts on this page:** 18\
**Page:** 2

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**Author:** ![bar](https://yyz1.discourse-cdn.com/flex031/user_avatar/forums.maslowcnc.com/bar/32/10_2.png) [@bar](https://forums.maslowcnc.com/u/bar)\
**Post date:** [January 30, 2025, 12:56am UTC](https://forums.maslowcnc.com/t/several-wierd-issues/23256/21 "2025-01-30T00:56:52Z")

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Yeah, that looks like it should work great.

Can you try changing how much belt is extended at the beginning? Maybe there is something weird about the spot that it is running the calibration?

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**Author:** ![bar](https://yyz1.discourse-cdn.com/flex031/user_avatar/forums.maslowcnc.com/bar/32/10_2.png) [@bar](https://forums.maslowcnc.com/u/bar)\
**Post date:** [January 30, 2025, 12:57am UTC](https://forums.maslowcnc.com/t/several-wierd-issues/23256/22 "2025-01-30T00:57:27Z")

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When you press the “test” button you don’t see anything weird, right? Firmware and index.html files are both v 0.88?

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**Author:** ![Pietbuilder](https://avatars.discourse-cdn.com/v4/letter/p/8baadc/32.png) [@Pietbuilder](https://forums.maslowcnc.com/u/Pietbuilder)\
**Post date:** [January 30, 2025, 4:27am UTC](https://forums.maslowcnc.com/t/several-wierd-issues/23256/23 "2025-01-30T04:27:10Z")

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I am actually using .87. I could not get a good calibration with .88.  
Index.html Version: 0.87  
[MSG:INFO: Firmware Version: 0.87]  
[MSG:INFO: I2C Timeout:]  
[MSG:INFO: 10]  
[MSG:INFO: All tests passed on Top Left]  
[MSG:INFO: All tests passed on Top Right]  
[MSG:INFO: All tests passed on Bottom Left]  
[MSG:INFO: All tests passed on Bottom Right]

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<div class="post-metadata">

**Author:** ![bar](https://yyz1.discourse-cdn.com/flex031/user_avatar/forums.maslowcnc.com/bar/32/10_2.png) [@bar](https://forums.maslowcnc.com/u/bar)\
**Post date:** [January 30, 2025, 6:02pm UTC](https://forums.maslowcnc.com/t/several-wierd-issues/23256/24 "2025-01-30T18:02:36Z")

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> [@Pietbuilder](#):
>
> I am trying to test it out but now it wants me to run calibrate again. I have saved off different successful yaml files and they are the same.
> 
> My frame has not changed. Can I get past this message or is it a symptom of other problems?
> 
> [MSG:INFO: Measured waypoint 2]  
> [MSG:INFO: Center point deviation: TL: 0.000 TR: 0.000 BL: 14.271 BR: -21.394]  
> [MSG:ERR: Center point deviation over 12.000mm, your coordinate system is not accurate, maybe try running calibration again?]

OK, so this is where we’re stuck. We can get through calibration successfully, but then next time the system thinks that the calibration values aren’t good enough to be able to move safely.

After calibration finishes if you move the machine around does it seem like everything is normal and moves smoothly?

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<div class="post-metadata">

**Author:** ![Pietbuilder](https://avatars.discourse-cdn.com/v4/letter/p/8baadc/32.png) [@Pietbuilder](https://forums.maslowcnc.com/u/Pietbuilder)\
**Post date:** [January 30, 2025, 7:31pm UTC](https://forums.maslowcnc.com/t/several-wierd-issues/23256/25 "2025-01-30T19:31:06Z")

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Yes  
So from off state:  
I power on Maslow  
Retract all  
Extract all  
Apply Tension  
It complains about not being in center  
I run calibration, it requires several runs to get to its happy place. A new calibration is generated and the values in the YAML file have not changed. I have downloaded the file several times after several repeats of the same procedure above. I run the files past diff and there are no changes.  
The I try to run a part. It gets about 30 seconds in and there is the error.

What I have not done yet (I recently discovered where to see the error messages about what actually is happening) is to see if by moving the arms around the arm that throws the error moves. I have another encoder board ordered with the thought that I have a bad one of them.  
The next thing that i am going to try is a horizontal frame that is the full height.

The one thing that I have noticed is that one arm always stays slack. I also noticed that I have the unit upside down in the frame. I got this unit second hand already assembled. I installed it on my frame with the power cord up and the dust port down. Which just seemed to make sense. I have tried running it reverse of how I had it and it made no difference.

Thank you for sticking with me.  
Dave

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<div class="post-metadata">

**Author:** ![bar](https://yyz1.discourse-cdn.com/flex031/user_avatar/forums.maslowcnc.com/bar/32/10_2.png) [@bar](https://forums.maslowcnc.com/u/bar)\
**Post date:** [January 30, 2025, 7:39pm UTC](https://forums.maslowcnc.com/t/several-wierd-issues/23256/26 "2025-01-30T19:39:25Z")

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> [@Pietbuilder](#):
>
> A new calibration is generated and the values in the YAML file have not changed

This sounds like it could be an issue. Do you mean that they haven’t changed at all, or they haven’t changed very much?

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<div class="post-metadata">

**Author:** ![Pietbuilder](https://avatars.discourse-cdn.com/v4/letter/p/8baadc/32.png) [@Pietbuilder](https://forums.maslowcnc.com/u/Pietbuilder)\
**Post date:** [January 30, 2025, 7:44pm UTC](https://forums.maslowcnc.com/t/several-wierd-issues/23256/27 "2025-01-30T19:44:28Z")

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They change from the original but after calibration runs I do not see them change.  
So there are lots of changes on the config yaml file revealed by diff from the original on github. But when I compare the yaml from the latest calibration it does not change values.

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<div class="post-metadata">

**Author:** ![dlang](https://yyz1.discourse-cdn.com/flex031/user_avatar/forums.maslowcnc.com/dlang/32/859_2.png) [@dlang](https://forums.maslowcnc.com/u/dlang)\
**Post date:** [January 30, 2025, 7:47pm UTC](https://forums.maslowcnc.com/t/several-wierd-issues/23256/28 "2025-01-30T19:47:50Z")

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Dave Waller wrote:

> Yes  
> So from off state:  
> I power on Maslow  
> Retract all  
> Extract all  
> Apply Tension  
> It complains about not being in center  
> I run calibration, it requires several runs to get to its happy place. A new calibration is generated and the values in the YAML file have not changed. I have downloaded the file several times after several repeats of the same procedure above. I run the files past diff and there are no changes.

please post the yaml file. When you say it has not changed, are the anchor  
values the default, or still the same as the prior calibration (I would expect  
some change, even if it’s to the right of the decimal

> The I try to run a part. It gets about 30 seconds in and there is the error.
> 
> What I have not done yet (I recently discovered where to see the error  
> messages about what actually is happening) is to see if by moving the arms  
> around the arm that throws the error moves. I have another encoder board  
> ordered with the thought that I have a bad one of them.

> The next thing that i am going to try is a horizontal frame that is the full height.
> 
> The one thing that I have noticed is that one arm always stays slack. I also  
> noticed that I have the unit upside down in the frame. I got this unit second  
> hand already assembled. I installed it on my frame with the power cord up and  
> the dust port down. Which just seemed to make sense. I have tried running it  
> reverse of how I had it and it made no difference.

what matters is which arm is where, not the direction of the sled. The normal  
direction is both power cord to the electronics and the dust collection down

David Lang

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**Author:** ![dlang](https://yyz1.discourse-cdn.com/flex031/user_avatar/forums.maslowcnc.com/dlang/32/859_2.png) [@dlang](https://forums.maslowcnc.com/u/dlang)\
**Post date:** [January 30, 2025, 8:00pm UTC](https://forums.maslowcnc.com/t/several-wierd-issues/23256/29 "2025-01-30T20:00:46Z")

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Dave Waller wrote:

> They change from the original but after calibration runs I do not see them change.  
> So there are lots of changes on the config yaml file revealed by diff from the original on github. But when I compare the yaml from the latest calibration it does not change values.

can you please post the Maslow\* variable from the yaml file? (or the entire  
file)

I’m surprised that a calibration doesn’t change it at all. But if you have a  
good calibration, you should not have to run it again. Which would mean we need  
to look earlier and figure out why it’s giving the earlier error that’s  
suggesting that you need to calibrate.

@bar, is there a command to list the current belt lengths? (I would suggest that  
the ‘unable to find center’ error also output the anchor locations and the belt  
lengths, more info will let us check the math and logic)

David Lang

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**Author:** ![Pietbuilder](https://avatars.discourse-cdn.com/v4/letter/p/8baadc/32.png) [@Pietbuilder](https://forums.maslowcnc.com/u/Pietbuilder)\
**Post date:** [January 30, 2025, 8:44pm UTC](https://forums.maslowcnc.com/t/several-wierd-issues/23256/30 "2025-01-30T20:44:03Z")

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Well I have good news to report. It must have not liked being upside down…

I have it on the frame with the top arms on the top and ran the calibration which ended up with very good fitness numbers.

I retracted the belts, powered cycled and retract, extend tension and it is happy now.

Dave

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<div class="post-metadata">

**Author:** ![Pietbuilder](https://avatars.discourse-cdn.com/v4/letter/p/8baadc/32.png) [@Pietbuilder](https://forums.maslowcnc.com/u/Pietbuilder)\
**Post date:** [January 30, 2025, 8:46pm UTC](https://forums.maslowcnc.com/t/several-wierd-issues/23256/31 "2025-01-30T20:46:54Z")

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Oh and I am on v0.88 now.

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**Author:** ![dlang](https://yyz1.discourse-cdn.com/flex031/user_avatar/forums.maslowcnc.com/dlang/32/859_2.png) [@dlang](https://forums.maslowcnc.com/u/dlang)\
**Post date:** [January 30, 2025, 8:59pm UTC](https://forums.maslowcnc.com/t/several-wierd-issues/23256/32 "2025-01-30T20:59:03Z")

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Dave Waller wrote:

> Well I have good news to report. It must have not liked being upside down…

when it’s flat, it won’t care much, but when it’s vertical, there are  
assumptions about what belts gravity will keep tight and therefor the order to  
tighten the belts.

> I have it on the frame with the top arms on the top and ran the calibration which ended up with very good fitness numbers.
> 
> I retracted the belts, powered cycled and retract, extend tension and it is happy now.

fantastic, what fitness did you end up with?

David Lang

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**Author:** ![Pietbuilder](https://avatars.discourse-cdn.com/v4/letter/p/8baadc/32.png) [@Pietbuilder](https://forums.maslowcnc.com/u/Pietbuilder)\
**Post date:** [January 30, 2025, 10:01pm UTC](https://forums.maslowcnc.com/t/several-wierd-issues/23256/33 "2025-01-30T22:01:32Z")

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Everything is working much better now. I shut it down and rotated the base so that the dust collection port is on the bottom and when it turned back on it was happy again.

I ran another calibration to get the fitness because i forgot to grab it before.

Fitness: 1.1830199257229108

Thank you very much for sticking with me. I am going to try to make a part now!

Dave

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**Author:** ![dlang](https://yyz1.discourse-cdn.com/flex031/user_avatar/forums.maslowcnc.com/dlang/32/859_2.png) [@dlang](https://forums.maslowcnc.com/u/dlang)\
**Post date:** [January 30, 2025, 11:59pm UTC](https://forums.maslowcnc.com/t/several-wierd-issues/23256/34 "2025-01-30T23:59:26Z")

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Dave Waller wrote:

> Everything is working much better now. I shut it down and rotated the base so that the dust collection port is on the bottom and when it turned back on it was happy again.
> 
> I ran another calibration to get the fitness because i forgot to grab it before.
> 
> Fitness: 1.1830199257229108

I think that’s the best fitness I’ve seen reported.

> Thank you very much for sticking with me. I am going to try to make a part now!

thanks for sticking through the headaches.

David Lang

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<div class="post-metadata">

**Author:** ![Pietbuilder](https://avatars.discourse-cdn.com/v4/letter/p/8baadc/32.png) [@Pietbuilder](https://forums.maslowcnc.com/u/Pietbuilder)\
**Post date:** [January 31, 2025, 12:15am UTC](https://forums.maslowcnc.com/t/several-wierd-issues/23256/35 "2025-01-31T00:15:31Z")

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[MSG: /sd/kitchen-rib.nc file job succeeded]

Awesome!

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**Author:** ![dlang](https://yyz1.discourse-cdn.com/flex031/user_avatar/forums.maslowcnc.com/dlang/32/859_2.png) [@dlang](https://forums.maslowcnc.com/u/dlang)\
**Post date:** [January 31, 2025, 12:43am UTC](https://forums.maslowcnc.com/t/several-wierd-issues/23256/36 "2025-01-31T00:43:31Z")

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Dave Wallerwrote:

> Awesome!

how is the accuracy?

David Lang

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**Author:** ![bar](https://yyz1.discourse-cdn.com/flex031/user_avatar/forums.maslowcnc.com/bar/32/10_2.png) [@bar](https://forums.maslowcnc.com/u/bar)\
**Post date:** [January 31, 2025, 12:59am UTC](https://forums.maslowcnc.com/t/several-wierd-issues/23256/37 "2025-01-31T00:59:00Z")

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FANTASTIC!!! ❤ 👍 👍🥳🙌🎉 🎉

Great work sticking with it. And great work figuring it out! We had a lot of suggestions, but I didn’t think to try that it could be upside down 😀

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**Author:** ![N8DGR8](https://yyz1.discourse-cdn.com/flex031/user_avatar/forums.maslowcnc.com/n8dgr8/32/25633_2.png) [@N8DGR8](https://forums.maslowcnc.com/u/N8DGR8)\
**Post date:** [February 1, 2025, 2:34am UTC](https://forums.maslowcnc.com/t/several-wierd-issues/23256/38 "2025-02-01T02:34:37Z")

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I also experience the belts going the wrong direction to retract. It was all 4 and was a big mess. It only happened once, and now I always watch to make sure they are going the correct direction.

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