Weird lines...

[AlbinKlein]

I am having this problem now and is not something happening all the time and I can't really find out what's causing it to solve it...

Here is a picture of a model scanned with the lines: (raw scan)

Weird lines

And then without them, (fused scan but it didn't have the lines anyway)

No lines

I haven't changed anything, same setup, same computer, same all and I am really freaking out... Sometimes they are more noticeable than that.

Setup

Somebody have an idea?

I am scanning at 1920x1200 5fps

[WalterMo]

Maybe the mechanic of the kitchen timer isn't perfect. Or the laser isn't well fixed at the kitchen timer. Is its cable free hanging down? Better is to fix it at the tripod in a way that only the upper (lightweight) part is moved by the tilted laser.

Also: Decrease the intersection angle, means lower the position of the laser. Test scanning with a lower resolution, e.g. 800 x 600. Then the frame rate will increase.

[AlbinKlein]

I am also thinking about the kitchen clock causing the problem as the artifact increases where the parts of the model are closer to the camera when I rotate it, meaning it's having some problems with the rotation causing cyclic rapid movements to the laser.

All the rest is fine though as the latest "perfect" scan, one week ago, had the same setup but anyway I took the advice about the cables, thanks.

Will replace the clock and see how it goes.

Cheers...

PD: any other suggestion is appreciated.

[AlbinKlein]

Changed the kitchen clock and the lines almost disappeared, not completely but looks pretty good...

Does somebody has a better "McGiver" way to move the laser better?

Thanks in advance:

[WalterMo]

A stepper motor with an attached gear will do the best job. In our user gallery you will find a lot of examples. E.g. here:
viewtopic.php?f=6&t=1827&hilit

But a stepper needs a special controller with power amplifier to drive it. E.g.:
viewtopic.php?f=6&t=1999


PS. Instead of McGiver you can see how Gyro Gearloose would have solved the problem:
viewtopic.php?f=6&t=3038

[AlbinKlein]

Thank you for the links... Is it there any Lego Mindstorm setup? I can't find anything about it...

[WalterMo]

At top right of this site we have the possibility to search something.

Enter 'Mindstorm' and you will find a bit.

[AlbinKlein]

Well I said "I can't find anything about it" so I did search.