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#1 2019-02-13 17:44:37

RodrigoDeNadai
Member
From: Brasil
Registered: 2018-12-04
Posts: 19

Barrel Factor Negative Values

Hello Shahin,

In my top down printer I was trying to adjust barrel factor settings for perfect alignement
As you can see in the pictures bellow, at Y=0 my lines are perfectly straight, but at Y=max the projected lines deviates a little to the right side.

HzwKdyP.jpg?2
4BxU1Kg.jpg?2

Adjusting the barrel factor seems to increase the deviation, and negative values seems to be the solution for my problem. Is it possible to allow negative values to the barrel factor?
Are center of barrel values in pixels?

Thanks a lot

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#2 2019-02-13 20:59:13

Shahin
Administrator
Registered: 2016-02-17
Posts: 2,607

Re: Barrel Factor Negative Values

Yes, even though I have not tested neg value. If html form does not let you change it, use inspector to put value there. If it works will remove it from official build.

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#3 2019-02-14 19:05:33

RodrigoDeNadai
Member
From: Brasil
Registered: 2018-12-04
Posts: 19

Re: Barrel Factor Negative Values

Hi Shahin

I'm actually using RPi to run nanoDLP with the latest beta version.
I've connected my ramps and projector to my PC. Oppened nanodlp.exe and the HTML (nanodlp>templates>calibration>projector-calibration.html) but when I pressed display under Barrel Distortion appears the following message:

This website could not be found.
Error Code: INET_E_RESOURCE_NOT_FOUND

What I'm doing wrong?
How to use the inspector as you said?

Thanks in advance

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#4 2019-02-21 06:21:02

Shahin
Administrator
Registered: 2016-02-17
Posts: 2,607

Re: Barrel Factor Negative Values

Maybe it because when you open file on windows, it could get blocked. Close html file see if still receive the same error or not.

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#5 2019-02-25 16:59:49

RodrigoDeNadai
Member
From: Brasil
Registered: 2018-12-04
Posts: 19

Re: Barrel Factor Negative Values

Shahin, I dont know how to do this.
I'm oppening the HTML file with my browser, is it correct?
How to use the inspector as you said?

Thank you in advance.

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#6 2019-02-26 06:40:46

Shahin
Administrator
Registered: 2016-02-17
Posts: 2,607

Re: Barrel Factor Negative Values

There are loads of tutorial on inspector, just go to option use inspector to remove limit and enter negative value.
https://developers.google.com/web/tools … ct-styles/

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#7 2019-03-02 16:43:40

RodrigoDeNadai
Member
From: Brasil
Registered: 2018-12-04
Posts: 19

Re: Barrel Factor Negative Values

Hello Shahin
I'm doing some mechanical adjustments in my machine and it is disassembled, but as soon as possible I'll test your recomendations and will give a response for you.
Thank you

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