this post was submitted on 02 Jan 2025
45 points (97.9% liked)
Ask Lemmy
27352 readers
1783 users here now
A Fediverse community for open-ended, thought provoking questions
Rules: (interactive)
1) Be nice and; have fun
Doxxing, trolling, sealioning, racism, and toxicity are not welcomed in AskLemmy. Remember what your mother said: if you can't say something nice, don't say anything at all. In addition, the site-wide Lemmy.world terms of service also apply here. Please familiarize yourself with them
2) All posts must end with a '?'
This is sort of like Jeopardy. Please phrase all post titles in the form of a proper question ending with ?
3) No spam
Please do not flood the community with nonsense. Actual suspected spammers will be banned on site. No astroturfing.
4) NSFW is okay, within reason
Just remember to tag posts with either a content warning or a [NSFW] tag. Overtly sexual posts are not allowed, please direct them to either !asklemmyafterdark@lemmy.world or !asklemmynsfw@lemmynsfw.com.
NSFW comments should be restricted to posts tagged [NSFW].
5) This is not a support community.
It is not a place for 'how do I?', type questions.
If you have any questions regarding the site itself or would like to report a community, please direct them to Lemmy.world Support or email info@lemmy.world. For other questions check our partnered communities list, or use the search function.
6) No US Politics.
Please don't post about current US Politics. If you need to do this, try !politicaldiscussion@lemmy.world or !askusa@discuss.online
Reminder: The terms of service apply here too.
Partnered Communities:
Tech Support
No Stupid Questions
You Should Know
Reddit
Jokes
Ask Ouija
Logo design credit goes to:
tubbadu
founded 2 years ago
MODERATORS
I would use a fixed document camera with a height adjustable holder/desk for the actual piece of the board. The former are often fairly high quality in terms of resolution at their fixed focal length as long as you have good lightning and can often be found for cheap used. They definitely will also have lens distortion,but it should be easy to create your own profile to counteract this when doing a few calibration runs. (I think there I came around a tool for that once,but can't find it now)
The height adjustable holder/desk makes it fairly easy to always keep the actual image plane in the same distance so your profile once calibrated would fit, additionally you can use it to bring the pane of the object in the right angle to towards the camera if it isn't "flat" enough. I personally would try to adopt a 3D milling table from AliExpress for it, put it in a box below the actual image pane and use a digital angle meter to make sure it's actually flat
With that you should be able to achieve an accuracy below 0.1mm at least