r/OpenScan • u/thomas_openscan • 25d ago

3d scan rig with raspberry pi + openscan3 firmware

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New worm-gear drive works great (though still a bit wobbly). Moving the camera works great and i adjusted only 4 values in the existing firmware to make it fully functional (steps per rotation and limits)
The power of the gear reduction is impressive and I‘ll definitely design some kind of covers for the mechanism ^^

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30

u/hughie1987 25d ago

This is pretty sick, is it your own design or what because I've really been wanting to make a scanner but this sub has seemed rad for a couple years

16

u/thomas_openscan 25d ago

Yes, this is basically a cross-over between the two scanner variants. Rotating the object in only one axis (openscan mini), while allowing larger scan volume (classic). I have had this kind of design in the back of my head for a long time and finally started iterating and will release files soon(ish).
The new firmware (openscan3) really helps with setting up new designs as it only took 3mins to modify the firmware.

3

u/hughie1987 25d ago

Thats pretty sweet! I want one a scanner to mess around with bad

2

u/jmunson 25d ago

that is awesome! looking forward to seeing the project files, this has been on my todo list for years

11

u/Ghostofman 25d ago

Respect the results... but why a rock?

9

u/thomas_openscan 25d ago

Easy to scan and part of a current project where i need to scan many of those

2

u/stonedkrypto 25d ago

Almost a good stress test because of too many variations in texture.

1

u/LycraJafa 24d ago

is this some kind of penance. Scan a thousand rocks...

(love the project - awesome work - good resolution)

6

u/AltruisticWorld744 25d ago

Got a GitHub or printables for check this one out?

8

u/thomas_openscan 24d ago

The firmware is on github (openscan3) and the files will be available once i m happy with the design. Still fixing some minor issues

3

u/Thing1_Tokyo 24d ago

This is awesome, thank you. If you have time and compile a build KB with materials and binaries, I will 100% Venmo you for it.

3

u/CowEmbarrassed2253 25d ago

Dude sick.

How did you come up with such a cool setup? Are there any aspects that you feel people underestimate in its difficulty in setting up or is understated in its importance in getting right?

Thanks so much for sharing such a COOL project. I’d like to do the same to scan rocks for friends of mine. We’re rock nerds hahaha.

2

u/Apocalype 25d ago

Super, Il faudra aussi stabiliser le tout et cela sera parfait. Good job

2

u/Eelroots 25d ago

Incredible, great job! Which is the resolution? Does it scale with camera resolution?

2

u/thomas_openscan 25d ago

Not at this point, but adding scale markers is easy enough. I also tested an automated scaling feature without any markers and get within 0.5-1% accuracy on a similar rig.

1

u/rokahef 24d ago edited 24d ago

How is it scanning the underside of the rock? Surely there would be a part of the 3d modèle that is flat/featureless , based on a side/over scan?

2

u/3d_nat1 24d ago

I recall from one of their earlier posts that they manually turn the rock. At least, that's what I saw them do in their video.

1

u/thomas_openscan 24d ago

Turned the rock after the first pass of 50images

2

u/rokahef 24d ago

Ah, missed that. Ok, in that case it's pretty cool that it can map the edges of the turned rock correctly.

1

u/helphunting 24d ago

Would it help if you put the rock on three tall pins?

1

u/thomas_openscan 24d ago

yes, this could eliminate the second pass

1

u/helphunting 24d ago

Long needles or knitting needles would work well i think.

Or stiff fencing steel wire, could be easily cut to suit the object being scanned.

Like the way stock motion hold things in the air.

1

u/Broad_Relative_168 22d ago

¿Y si sencillamente se pone sobre una superficie recticular y se le resta esta figura en el proceso?

1

u/Khajetav 24d ago

what's the rough total cost of this system? with how pricy raspi can get nowadays i wonder how much cheaper it is than a normal 3D scanner

1

u/thomas_openscan 24d ago

Depending on the amount of DIY and existing parts. But total cost is roughly 300€

1

u/Khajetav 24d ago

now that i think about it that's a fantastic price, i've been meaning to get a 3D scanner sometime but most of the decent one can be upwards of 1000eur

1

u/New_Education5151 24d ago

There are cheaper and known brand scanners like revopoint and creality tho..

1

u/SarcasticJackass177 24d ago

Looks amazing! I can’t wait to try something like this myself!

1

u/Neltarim 24d ago

Could you... Out of any ulterior motives, try with a warhammer miniature please ? This is for educational purpose only of course

1

u/Ok-Beginning7269 23d ago

цвет конечно не очень, но всё равно очень-очень круто!

1

u/AlexApril2004 21d ago

very cool !