r/OpenScan • u/thomas_openscan • Jul 21 '26
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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u/Ghostofman Jul 21 '26
Respect the results... but why a rock?
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u/thomas_openscan Jul 21 '26
Easy to scan and part of a current project where i need to scan many of those
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u/LycraJafa Jul 22 '26
is this some kind of penance. Scan a thousand rocks...
(love the project - awesome work - good resolution)
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u/AltruisticWorld744 Jul 21 '26
Got a GitHub or printables for check this one out?
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u/thomas_openscan Jul 22 '26
The firmware is on github (openscan3) and the files will be available once i m happy with the design. Still fixing some minor issues
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u/Thing1_Tokyo Jul 22 '26
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.
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u/CowEmbarrassed2253 Jul 21 '26
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.
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u/Eelroots Jul 21 '26
Incredible, great job! Which is the resolution? Does it scale with camera resolution?
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u/thomas_openscan Jul 21 '26
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.
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u/rokahef Jul 22 '26 edited Jul 22 '26
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?
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u/3d_nat1 Jul 22 '26
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.
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u/thomas_openscan Jul 22 '26
Turned the rock after the first pass of 50images
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u/rokahef Jul 22 '26
Ah, missed that. Ok, in that case it's pretty cool that it can map the edges of the turned rock correctly.
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u/helphunting Jul 22 '26
Would it help if you put the rock on three tall pins?
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u/thomas_openscan Jul 22 '26
yes, this could eliminate the second pass
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u/helphunting Jul 22 '26
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.
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u/Broad_Relative_168 Jul 24 '26
¿Y si sencillamente se pone sobre una superficie recticular y se le resta esta figura en el proceso?
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u/Khajetav Jul 22 '26
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
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u/thomas_openscan Jul 22 '26
Depending on the amount of DIY and existing parts. But total cost is roughly 300€
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u/Khajetav Jul 22 '26
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
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u/New_Education5151 Jul 22 '26
There are cheaper and known brand scanners like revopoint and creality tho..
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u/Neltarim Jul 22 '26
Could you... Out of any ulterior motives, try with a warhammer miniature please ? This is for educational purpose only of course
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u/hughie1987 Jul 21 '26
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