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OpenScan

3D Scanner - revised version

by OpenScan Aug 15, 2018
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I feel that the thing details description should come with a warning about these types of photogrammetry 3d scanner rig.
There is one huge fundemental design flaw with this type of rig that the other rig in your design (3D Scanner - Poor Man's photogrammetry rig - https://www.thingiverse.com/thing:2944570) does not have.

With these rigs, where the turntable moves on both the x AND y axis, movable parts on the item being scanned will move due to gravity. for example chains, string, fabric and other flexible parts may well move as the turntable moves instead of the camera moving. This could ruin the 3d scan.

The other rig 3D Scanner - Poor Man's photogrammetry rig (https://www.thingiverse.com/thing:2944570) only has the turntable rotate on one axis (y axis) so gravity is not an issue on movable parts. While this rig is potentially more effort to build and make, it is going to offer the ability to scan more objects.

I can see that this model is more popular and would probably suit most peoples needs, however i think it should still highlight the additional limitations as opposed to the other rigs.

I suppose it may be possible to adapt this design (between this and the poor man's photogrammetry rig) so that the camera moves around the turntable with fewer parts to assemble.

3D Scanner - Poor Man's photogrammetry rig

Never mind...I found the file on the forum after registering and making a donation.

I just ordered the complete electronic parts kit from your website and would like to make the structural parts using CNC instead of 3D printing. I tried to find the CNC files on the link provided here, but did not find them (I don't speak German). Can you provide a direct link to the CNC parts/information? Thank you very much!

I cam across these design files from the "OpenScanner" project page. The main page of the "OpenScanner" site says that this project is "Open Hardware" but the license for these files is non commercial.

The Open Source Hardware Association defines "open-source" hardware as:

... hardware whose design is made publicly available so that anyone can study, modify, distribute, make, and sell the design or hardware based on that design.

In addition to the accepted definition of "Open Source":

An open-source license ... that allows the source code, blueprint or design to be used, modified and/or shared ... . This allows end users and commercial companies to review and modify the source code, blueprint or design for their own customization, curiosity or troubleshooting needs.

Was it your intent to have the project be open hardware? If so, could you remove the non-commercial license to these files? If not, could you remove the "Open Hardware" section from the OpenScan landing page and consider renaming the project something else as it's confusing to have a project claim to be open but not have the underlying data artifacts be open source.

How much more "open" do you need? How this thing works is clearly visible. The images show the PCB and all components. If you consider some basic traces between ready made boards enough reason to be not open hardware if there is no digital schematic you shoud think about your attitude. If you are not able to draw such a simple schematic by yourself I consider you as a troll. Do you need someone to clean up your poo after you've finished?

Hi everyone.

I created a faceplate for the controller: https://www.thingiverse.com/thing:3582353

OpenScan Controller Faceplate
by Duggem

I have everything working besides getting it to trigger my bluetooth shutter with the lcd says a picture is being taken. Did I forget something in the arduino sketch?Is there a special library I need to add? Any help would be appreciated.Thank you.

The Rotary Arm Hole for the Turntable Base in the large version doesnt fit to the holes.
The arm hast a with for 1,1mm - the Rotary Arm Holes are only 1,03mm. for the "Turntable_Base_smallNema" its ok but not for the large 35cm version.

Hab ich leider erst nach dem Drucken gemerkt, normal prüfe ich die Abmessungen immer vorher.

Hey, could it please share some high resolution pictures of the electronics and the data sheet? Thanks

Razanur is right, Adapter1.stl has a hole for a stepper motor shaft, not a 6mm one. I had to drill it out.

Thanks for your comment. This was truly my mistake as I uploaded an earlier version's file. I changed the file in the directory to the one with a 6mm hole.

Yes, I found the same thing and thought I was losing my mind.

Hi, great project!
We just bought the components from your website and were putting them together. However, we encountered the problem, that the whole in the piece that is called 'Adapter1.stl' is not round and too small for the axis you deliver. Am I missing something, or is that a mistake?
I edited the piece (see here https://www.thingiverse.com/thing:3501442) and printing it right now.

OpenScan 3D scanner - Tinkercad version
by Razanur

Did you get your working?

The one in your video (https://www.youtube.com/watch?v=I1MALN7fak0) also seems to have a round hole :hmmmm:

what are the capacitors or whatever the cylinders are above both of the A4988 Stepper Drivers? Part Number?

Red cable on stepper driver connected to 2 pins from 5v rail? (none of the other cables are routed in this way is why I ask)

List of items on breadboard, or pulled from website
Nano V 3.0
LCD 20x4 I2C
(2X)Nema 17 Stepper Motors
(2x)A4988 Stepper Driver
Resistor - 220 ohms
optocoupler - PC817 (model)
3 buttons
5v 2amp?(I am guessing on amps)
12v 2amp

Please respond with any corrections please. Thank you!

Has there been an answer for this, please?
I'm making my first foray into building electronics with this and can just about follow along on the breadboard.
The things that have no label look like capacitors and are just above the Arduino stepper drivers and attached to the 12v rail are the things we need part numbers for, Yes?

Did you get this working or at least find out what they are? Any help would be gratefully welcomed!

Okay, so I got an idea and it paid off.. The capacitors for the stepper motor drivers are 100 Microfarads. The bought PCB also has capacitors for the two rails. the 5 volt has a 100 microfarad and the 12v has a 10 microfarad.

I still need inspiration for the wiring question though.
Much thanks
Amalys

Wow, fantastic, watching the workflow video now. I would love to see this moved to a wireless micro controller like the esp8266(or the correct one for this application).

Actually I would use the ESP32, then you can do the Bluetooth triggering without any extension/added device!

very cool, looks like you are putting one together?

This would be a great improvement. Unfortunately this is way beyond my programming skills at the moment, so I hope, that there will be someone trying to implement the ESP32 (and publishing it ;)

Hey!

This looks great. Could I use an old RAMBo to control it instead with an LCD screen? If so how would I? Thanks!

There is a remix available here, which seems to work with the ramps https://www.thingiverse.com/thing:3482715

3D Scanner with RAMPS/3D-PRINTER Board
Comments deleted.

With standard arduino will work? Congratulations looks great

Of course, you could either use the custom PCB provided on the website and connect it with some jumper wires. Or you can build it using the wiring/breadboard layout also provided on my website www.openscan.eu/scanner (sorry at the moment it's mostly in German but I am working on the translation ;)

Hi! :)

A few questions:

  • I am active in the locksport community (which is how I found you via Youtube) - did you use this setup for your key scans? I plan on trying to copy some high security keys (Keso, Evva 3KS and so on)
  • Did you notice a difference in resolution between using a higher end camera + ring light versus a smarthphone camera (this question targets mostly my first one - do you think smartphone images can provide the level of detail necessary for copying keys?
  • For other use cases: What object size can you actually fit into this scanner (and how much postprocessing is necessary to e.g. remove parts of the frames when the object is tilted to to the front or back, if that is a concern?)

Thanks for sharing your design with us! :D I am pretty excited about this! ^^

Hi,
i met the designer of this model at a maker fare and I think he used his dslr/slr camera to do all of that but it should be possible to do with an phone camera, if you fill out most of the space you can take a photograph in. i think it was about tennis ball sized but works better with smaller models.
you can edit the models/pointclouds quite easily but should have a decent bit of processing power takes about a day or so to process a model with ~800-1000 picures and you need 16-33 gigs of ram.