Delta Rostock level calibration problem May 16, 2014 11:30AM |
Registered: 10 years ago Posts: 4 |
Re: Delta Rostock level calibration problem May 16, 2014 02:18PM |
Registered: 11 years ago Posts: 732 |
Re: Delta Rostock level calibration problem May 16, 2014 11:35PM |
Registered: 10 years ago Posts: 21 |
Quote
hercek
Maybe you have a combination of diagonal rod length and delta radius error, possibly with incorrect steps per mm. These errors can lead to z-height error like this (these may be at the same height, depending where you measure ABC and centre):
[attachment 32970 err.png]
If your z-height error is not nicely symmetrical across the 3 axes then position of one of your virtual towers may be wrong too.
For possible remedies look here: [forums.reprap.org]
Re: Delta Rostock level calibration problem May 17, 2014 11:37AM |
Registered: 11 years ago Posts: 732 |
Quote
MRGiacalone2005
hercek, Great graph. Where did you get it? do you know what function was used?
Re: Delta Rostock level calibration problem May 17, 2014 03:58PM |
Registered: 10 years ago Posts: 903 |
Re: Delta Rostock level calibration problem May 17, 2014 07:25PM |
Registered: 10 years ago Posts: 21 |
Quote
hercek
Quote
MRGiacalone2005
hercek, Great graph. Where did you get it? do you know what function was used?
I got it by setting appropriate parameters to this maxima notebook: [github.com]
The notebook contains a "simulator" of influence of delta printer calibration errors on the bed level z-height.
Setting proper parameters to the notebook is just a matter of experience. Play with it and you can do it too.
Re: Delta Rostock level calibration problem May 18, 2014 07:56PM |
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Re: Delta Rostock level calibration problem May 19, 2014 01:10PM |
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Re: Delta Rostock level calibration problem May 20, 2014 05:27PM |
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Re: Delta Rostock level calibration problem May 20, 2014 06:04PM |
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Re: Delta Rostock level calibration problem October 04, 2016 12:45PM |
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Re: Delta Rostock level calibration problem October 04, 2016 02:22PM |
Registered: 11 years ago Posts: 732 |
dc42 indicates that many people confuse sign when entering the errors: [forums.reprap.org]Quote
- Delta printer least-squares calibration calculator (http://escher3d.com/pages/wizards/wizarddelta.php)
The windows version did not work for some people because I used characters α, β, γ (greek alpha, beta, gamma). Open the notebook file with a plain text editor (e.g. gvim) and replace all occurrences of α with "alpha", β with "beta", and γ with "gamma" (without quotation marks). Try to open it again.Quote
But unfortunately I can't open the files (calibration.wxm, towerErrors.wxm)
I've tried with wxMaxima 13.04.2 on Ubuntu, and with 16.04.2 on Windows7
each time I got "wxMaxima encountered an error loading ../hercek/towerErrors.wxm"