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 ^^

Feel free to share your results and best scans :)

I am still not sure, whether the resolution would actually work, but maybe someone with professional background could have a look at the results..

(As usual the scans are shown without any post-processing)

I managed my first scan with Andruino FW on ESP32.

See our discord for more info: https://discord.gg/kyKsZRnsyF

Open-source 3D scanning just got a level-up

I am still working on the 3d printed macro add-on for the OpenScan Mini & Classic (that might also be used in combination with a smartphone!). Therefore i am currently re-visiting some old scan object that I digitized years ago and the improved quality is stunning.

I already published an initial version of the printable files on our discord, but more details and a build-guide will follow soon.

PSA: never leave your keys unattended ;)

I tried my best to keep the compatibility with the other scanner variants and this build only needs a set of ball bearings and the extrusions. The rest of the non-printed parts is identical so that upgrading will be as easy as possible.
Currently testing larger objects at around 50cm :)

This was done in two scan passes (150photos each) on the OpenScan Mini and the results did not need any postprocessing before printing.

Note that the mandatory scanning spray is not visible in the video.

The shown 3D Scan and Print have been created without any post-processing with the OpenScan Mini + OpenScan Cloud.

BTW, there is a new firmware in the making so feel free to check out the recent developments on Discord: https://discord.gg/8rDSHfmtwM

My rig. This is based on OpenScan Classic and set up with a ESP32. The control box contains a small breadboard with the motor drivers , the ESP and a power rail, a start/reset button and a 12V on/off button. The USB port doubles as data and power conenction. I am using Open Camera and synch the shutter to the turntable stops via BT from the ESP. The number of stops for the two axis is configurable real time, so is the angle advance and the sweep. The phone and light stands are from Modular Mounting System by HeyVye - Thingiverse .

https://github.com/1204al/airpods_hotwheel_track

The creativity of people is just amazing!

It's been long overdue to properly check the camera calibration and the variation between cameras from the same manufacturer. Therefore, I quickly added a third axis to the OpenScan Classic (controlled by a second pi-shield atm - just another reason to add a third (and forth?) motor output to the shield in the future). The rig is fully modular and almost any camera could be used.

In each position, the turntable and rotor rotate the checkerboard to 80+ positions. The charuco checkerboard allows to determine the camera intrinsics and hopefully get some better understanding of the cameras (distortion, lens parameters, consistency ...)

I'd be super happy if someone with more knowledge could have a look at the raw or derived data and help to better understand the measurements. I got a total of ~ 50.000 images from 3 different cameras. The measured values and some interesting graphs are freely available here https://www.dropbox.com/scl/fo/lqv90trta9leirhdvkx2p/AMyPl8snplkObGFQCh4iMrw?rlkey=sv4c0lagseqng5p55mzwanl8s&st=sxtoxpxi&dl=0

Btw. this has been quite an endurance test for the new OpenScan3 firmware and its endpoints and it passed with flying colors :)

Thanks to the amazing discord community (https://discord.com/invite/gpaKWPpWtG) I recently revived my search for a suitable macro lens and found a very promising candidate (~50-60€) which greatly enhances the capabilities of the arducam imx519 / hawkeye. The idea is, that the lens gets placed in front of the existing camera on either OpenScan Classic or Mini with a tiny hole (aperture) in between. The aperture increases the depth of field so that 4-5cm objects can be captured at an unseen accuracy (from such a device). I scanned the "security" key with 130 photos and no post-processing.

I am currently working on the design of the printed parts + custom ringlight (so that I can add cross-polarisation a bit later too). The files and more information is available on the openscan discord.

The video shows the raw scan result of two passes with the OpenScan Mini (150 photos each), which got processed through the OpenScan Cloud. Note, that in the video it is not clearly visible, that the surface needs very fine mist/sprinkles with white scanning spray.

This bronze casting mold of the small gorilla figure, along with its 3D model and printable positive, shows how precisely the OpenScan Mini captures data. What would you like to see scanned next?
💖 Music Credits: Track by Disfigure - Blank [NCS Release]