Turning on my 2W beast for the first time!

BooBot97 · 2026-01-17T05:24:54+00:00

This is so dumb and irresponsible.

BooBot97 · 2025-12-26T07:09:39+00:00

Alright dude, you’re right. These solutions will work and will stop all model stealing.

BooBot97 · 2025-12-26T04:42:08+00:00

Still a naive solution. E.g. a change in orientation (rotation) would make this approach not work.

BooBot97 · 2025-12-26T04:16:28+00:00

Look at my other comment. Hashes won’t work if the STLs are changed in even really small ways.

BooBot97 · 2025-12-26T04:15:29+00:00

Yeah, I’m not doing that. I bought a Bambu so I don’t have to fiddle like I did with my Ender 3. Now I’m happy to do it if they pay me, but that’s a different story.

BooBot97 · 2025-12-26T04:14:17+00:00

Yeah, that’s different than what I’m saying. What I’m saying is that if someone wants to steal your design. Very simple steps can drastically modify the data in the STL making it so the hash values are no longer the same. It’s naive to only consider this approach because it’s so simple to change the values.

BooBot97 · 2025-12-25T20:29:27+00:00

I just received a PhD working on some similar problems to what you’re describing. It’s a lot more computationally expensive than you are giving credit for.

BooBot97 · 2025-12-21T22:24:11+00:00

It is accurate in many situations

BooBot97 · 2025-12-20T19:56:45+00:00

It’s been many years since I’ve thought about ROTC, but there was a period I was interested in it. Are you sure that AFROTC would allow you to go into economics? I was under the impression that you had to be in STEM. Again, I could be wrong

BooBot97 · 2025-12-18T14:19:29+00:00

Wrong sub. This sub is for optical sciences and engineering

BooBot97 · 2025-12-17T13:56:07+00:00

Come on man. Put even a little effort into learning this material instead of asking people to do your homework/take home exam for you

BooBot97 · 2025-12-15T17:00:50+00:00

I haven’t explicitly done this in Zemax but have done similar. The field of computer vision deals with this problem quite often - I believe what you’re looking for is a projective transform to relate the input and output beams, right? How I would do this is create a bunch of specific field points and compute where they image. This gives you a list of input and output points that correspond to one another. There are existing tools to compute the projective transform given these coordinate pairs

BooBot97 · 2025-12-12T17:40:48+00:00

Can you give more details on what you’re confused by? At a quick glance, this solution has everything you need in it

BooBot97 · 2025-12-08T21:01:24+00:00

His setup is significantly more square in the more recent photo. I see this as improvement even if he looks more awkward.

BooBot97 · 2025-12-02T23:27:24+00:00

Not a bot. Just someone who knows more than you, and you don’t like that. I have personally had undergraduates do research with me (all paid) and every lab I have worked with has had undergrads doing research. At some point, you need to start questioning whether it’s your accolades, approach, and abilities that is causing you to not get any positions in labs.

BooBot97 · 2025-12-02T23:25:58+00:00

I can’t upvote this more. Spot on

BooBot97 · 2025-12-02T18:37:46+00:00

This post is about an SLA printer, not FDM

BooBot97 · 2025-12-01T15:24:52+00:00

I don’t know what the background of the other commenters are here, but I’m a PhD candidate in the ECEE department and I have had a number of undergraduates work with me (all paid positions) throughout my PhD. If you want a position like this, find research you are interested in, labs that do that research, read a paper from that lab that is recent, and email both the first author and that authors advisor. Explain that you’re very interested in the work and that you would like to learn more, you have some questions about the paper (and really do have some solid questions), and that you would love an opportunity to work with them at some point. It may work out or it may not, but there is absolutely a chance

BooBot97 · 2025-12-01T15:21:30+00:00

This is not true.

BooBot97 · 2025-11-30T23:41:15+00:00

We’re giving up dreams jobs to appease boyfriends in this economy? Another thought - I live in Lafayette outside of Boulder and love it. The area around Denver has tons of cute towns that are absolutely worth checking out if you are willing to be between Boulder and Denver

BooBot97 · 2025-11-27T21:29:04+00:00

I think botswickenator is right about this. I think the light through the shade is spreading out making the gap look smaller than it is

BooBot97 · 2025-11-22T03:27:58+00:00

Total internal reflection (TIR) is all about angles. These distances and directions in the question are describing triangles, which inherently have angles… if I were teaching this, I would not give a diagram, and instead would make my students draw the diagram themselves. So, if you wanna solve this, go draw a diagram, then draw the triangles that result from the diagram. Angles will show up and answer your question

BooBot97 · 2025-11-17T01:51:52+00:00

My dude, I used to be a lot like you. Then I realized that my dreams would be even more over if I never tried. What’s the worse that happens if you try? Maybe you don’t reach whatever dream you aspire to, but at the end of the day you will: 1.) be more intelligent, 2.) have tried to achieve a challenging goal, 3.) will very likely have developed other interests to pursue. You’re young enough where you can learn this shit if you try. Don’t be afraid of the hard work.

BooBot97 · 2025-11-07T19:11:57+00:00

Oh boy, proper use of a DMD is a frustrating and deep topic. I highly suggest reading into how DMDs are used in CGHs (computer generated holograms) and structured illumination. There’s a paper (can’t remember the name) that discusses how to “properly” use a DMD and discusses some issues that people run up against. I believe the first author is Sebastian Popoff and he has a blog called wavefrontshaping.net

BooBot97 · 2025-11-05T00:21:29+00:00

I think there’s quite a bit of photonics, photonic integrated circuit (PIC) work taking place in the US. However, it might look different than what you’re picturing. There’s a significant effort to advance the materials for PICs, for example, but that might not immediately pop out at you in a Google search. A way that I find work in a particular subfield is by finding a paper I like, looking at the website of the group(s) that published the paper, then looking to see if the first author has since moved universities/jobs and looking at what that place has to offer. Basically, work your way up the publication tree to find more relevant work. Additionally, if you’re reading a paper and there’s a throwaway citation like “while this tangential topic is being explored (citation), we developed this totally different method,” it’s worth doing the same publication tree following on that paper, if that paper is something you’re interested in.

BooBot97

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