51–60 of 64 posts
Will this work with small 5cm objects? For ages I am trying to find a good (and cheap) scanner able to scan small objects mostly used in cars. Had mixed results with tools like meshroom. I would immediately bi It a scanner when less than 1000usd.
Awesome work! How long does it take to finish this project?
Hi! Nice job! How much time does it take to perform a full scan?
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Available at https://examples.3dasd.com/
Doesn't work on (my) mobile phone. Some static images would be nice.
Taking a break from my software developer job, I've started to work on my first ever hardware project and with too much free time on my hands it quickly turned into something bigger than I've anticipated. Working with a friend, we wanted to explore the use of 3D scanners on construction sites but quickly got stuck as no cheap hardware was available to fool around with. How hard can it be to build one I thought? I've…
Great project and excellent presentation! I've been trying to build something similar for tracking birds / panoramas / photogrammetry while avoiding using non-printed parts as much as possible but haven't been very successful so far. Because of that I'm particularly interested in the printed gears you are using. Maybe you could help me with some of my questions and concerns. It looks like the whole thing is designed…
Yes, this is completely stiff, no flexible parts. I've experimented with a few gears and different distances between them. I've found that this herringbone gear works very well. I don't experience any visible backlash, but the gearing ratio also helps to suppress that.
I've printed everything from Hobbyking Premium PLA. Just as you've described, the rotation gets smoother after some wear. But even after 30-40 hours of use they still don't seem to become loose at all.
Securing everything on the bearing, there's no visible wobbling. I really recommend using a bearing if possible, it makes things so much easier. (:
Good luck with your project! (;
E.g. https://people.eecs.berkeley.edu/~jrs/papers/eigentalk.pdf
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> if you really care about backlash At 1200 mm equivalent a picture is only about 1.15° high, so accuracy is important :) > just measure it and then add a correction in your motor controller. I think your first idea doesn't really work for tilting because there is little friction and the camera isn't going to be perfectly balanced (the center of gravity also changes with the focal length and even the focus). When gra…
I've built a similar device to this (originally for a solar tracker that keeps the sun at high magnification in the middle of the frame, but it turns out to be ideal for panos as well). It's a DSLR with crop sensor, 300mm lens, stepper+gear for azimuth and stepper+belt for altitude (with gearing to get more torque for both). I used this system with Hugin to assemble 180 degree x 180 degree, 5 degree azimuth and altit…
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Great project and excellent presentation! I've been trying to build something similar for tracking birds / panoramas / photogrammetry while avoiding using non-printed parts as much as possible but haven't been very successful so far. Because of that I'm particularly interested in the printed gears you are using. Maybe you could help me with some of my questions and concerns. It looks like the whole thing is designed…
Hey there, thank you for the feedback! Yes, this is completely stiff, no flexible parts. I've experimented with a few gears and different distances between them. I've found that this herringbone gear works very well. I don't experience any visible backlash, but the gearing ratio also helps to suppress that. I've printed everything from Hobbyking Premium PLA. Just as you've described, the rotation gets smoother after…
How does this improve on taking a video with your phone and feeding it to one of the OpenSource 3D reconstruction packages (such as e.g. MeshRoom [1])? [1] https://alicevision.org/#meshroom
Unfortunately I don't know of any that are open source and not research-project style code (i.e. weeks of work to maybe get working).
Matterport are the market leaders in this sort of thing but it's commercial.