tobetz / legomicroscope Goto Github PK

Thanks to the great succes of your project the low-magnification objective lens of Astromedia is sold out (and it will stay so).
Are there alternatives ?
While i am here, Is it right that the i-phone lens is not straight under the occular lens?

Awesome project.

Shipping from AstroMedia in UK is reported by them as 6-10 weeks, so I went searching for some US sources for the lenses. I didn't find exact matches but my understanding is that exact matches are probably not critical---but I am no optics expert so I wanted to run them by you, and recommend you include them as options if they seem like they will work.

What I ended up finding that seemed most similar to the two lens types you used are:

• 37mm Dia. x -106mm FL, Grade 2, Plano-Concave Lens - Stock number 96-190 - https://www.edmundoptics.com/p/37mm-dia-x106mm-fl-grade-2-plano-concave-lens-/32822/
• 15mm Dia x 27mm FL, Grade 1, Plano-Convex Lens - Stock number 43-809 - https://www.edmundoptics.com/p/15mm-dia-x-27mm-fl-grade-1-plano-convex-lens/5297/

1. Can you confirm these will work with minimal modification of the instruction plan?
2. You might want to update your README to reference these items, if so.

Hi! Wonderful project! I'd like to translate it to Italian, what files need to be changed? Thank you.

Hi, I am trying to improve some of the (already amazing!) design.
I noticed in Lego plans that the eyepiece isn't directly above the centre of the objective, and not directly above the LED. Is this for eye safety? Should they all line up exactly?
thanks again.

Hi
i really like this Project. I have a few questions and comments.

1. What is the benefit of this LegoConstruction? I think it is the high resolution? Is this overall "better" than a 20$ (USB) Microscope or something like that? Or is it only for the kids to learn and try things and modify? So does it make sense for me to build this or should i buy one of the cheap Microscopes if i only want to use it as Microscope? Or would i get a better one with this LegoMicroscope?

2. The Bricklink list contain parts that are not longer produced and available. The Most of these parts are replaced by a renamed similar one. I can replace the most of them with them, that should work. But The Lightbrick is not available at all. So i have to find a easy and cheap way to light it up.

3. In the scientific paper there is a scheme. This is (for me) not 100% clear. You named the lenses: First and Second lense? I Think it would be much easier if you named the lenses (in the scheme .jpg too) Ocular and Objective. I guess the "second lense" is the Ocular?

4. Why i change the distance between the lenses? in conventional Microscopes i change the distance between the Object and the Objective.

I'm an adult, and have lots of sharp tools, but I can't see how to remove this lens without risking damaging it. And then, if I remove it, which way up to insert it? I've been through all the materials, as far as I can see, but not much help is there for the non-lego bits. thanks.

Any way i can help designing a 3d printed version of this?. As brick by brick but also just to be able to print a microscope.

First off -- I love this idea. However, I haven't managed to be able to see a clear image through the eyepiece yet, and was hoping for some help.

I have an iPhone 5 camera assembly from eBay that I'm using for the objective:

Question: is there a correct orientation for the objective? I think I have matched what was in the assembly PDF, but I'm not sure. (Some text explaining how to extract the lens from the camera assembly, and how to attach it to the Lego, would have been helpful here. I used hot glue.)

Following the discussion in issue #9, I'm using this lens for the eyepiece (a.k.a. "the large magnifying glass")
https://www.surplusshed.com/pages/item/L1828.html

And I'm using this one for what you call "the small magnifying glass":
https://www.edmundoptics.com/p/18-x-20mm-fl-grade-1-double-convex-lens/24352/

I sanded down the edges of the lens slightly to fit in the center of the Lego ring. Since this lens seems to be much thinner than what you're using, the other Lego ring that would go on top doesn't make contact with the lens, so I've left it off for now; the lens is just sitting there under its own weight.

Here's where I get confused. The full PDF instructions tell you to put the objective on the focusing assembly, but then the small magnifying glass is just sitting there next to it, like what I have here:

But presumably the fully assembled microscope has that small lens attached to the focusing assembly too? Something like this?

As I said, I can't seem to get a clear image with the setup I've just described... am I missing something?

Unfortunately, the LDR file is no longer work. They expect now *.cart files.
Any chances this could be ported?

"Ocular: We used two simple acrylic lens (diameter 34.5 mm, f = 106 mm) as occular, which we combined using simple transparent tape. In the current setup we use the lens number 308.OM7."

I bought two plastic OM-7 lenses, as suggested for the eyepiece. How do I use them both? What does "combined" mean -- is the transparent tape on the optical path? Which way round should the lenses go, out of the 4 possibilities? Thanks!

Hi Prof. Timo, hola from Xi.

Here is my lens options in China,

iPhone 5s replacement camera, f=4.1mm
Acrylic lens (2x) ：(diameter 31.5 mm, f = 100mm)
Glass lens：(diameter 17.5 mm, f = 25 mm)

The distance between the object and the second lens was measured with a ruler and found to be 237 mm, so at last, according to the formula, we got the total high-magnification M = 217X, total low-magnification of M = 26X.
Still hope it's right.

We took some videos to explain the process, here is the link:
Lens Part：https://www.youtube.com/watch?v=eeqykJiaFA4
Reduced distance：https://www.youtube.com/watch?v=ak24DZypnQc
LED Replaced：https://www.youtube.com/watch?v=r31mmgsWXp0
Results：https://www.youtube.com/watch?v=3H98Z7Qradw

Chinese text via https://mp.weixin.qq.com/s/8inIznvt7qHr4usf3euMQw

Hey there,

wonderful project!

As my children have their lego already tracked on rebrickable, I was wondering if you could upload the microscope there too.

That would enable us to buy only the parts that are missing right now to build the microscope.

You could submit the microscope as MOC and also upload the PDF-Instructions there.

Best regards!
Samuel

Both iPhone 5 and iPhone 5s are mentioned in the article but do they share the same back/rear camera module, the picture shows a 821-1592-a module? How about iPhone 5c?