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Yunus Zenichowski
Registrace 29. 05. 2020
Turbulent fluid flow in a box with obstacle.
This is a demo simulation, demonstrating the current capabilities of my CFD desktop application.
I recently rewrote my previous application. It is now tremendously faster and has a cooler visualization style.
I expect to publish an early version of the program, as soon as I have the following implemented:
mesh support, result analysis, GUI simulation setup and more visualization options.
If you are wondering, why the fluid jet wiggles in the beginning. I believe it's due to a shockwave bouncing around the box, from the immediate acceleration of the fluid in the inlet.
I recently rewrote my previous application. It is now tremendously faster and has a cooler visualization style.
I expect to publish an early version of the program, as soon as I have the following implemented:
mesh support, result analysis, GUI simulation setup and more visualization options.
If you are wondering, why the fluid jet wiggles in the beginning. I believe it's due to a shockwave bouncing around the box, from the immediate acceleration of the fluid in the inlet.
zhlédnutí: 542
Video
489 Megapixel DIY Digital Camera for little money.
zhlédnutí 210KPřed rokem
Inspired by @raspy00135 I designed this Scanner Camera. I call it Super Cheap Scanner Camera (SCSC). It is able to take pictures with extreme resolution and good image quality, while being very cheap to make. Correction: In 2:29 I say that the camera has 48 bits per channel, which is incorrect. What I meant was 48 bit color depth, which is 16 bits per channel. Thank you, @soza.pidgeon for point...
Demo of a Lattice Boltzmann Fluid Solver - D3Q27 with CM MRT (GTX 980)
zhlédnutí 505Před rokem
The goal of this project is to develop an easy-to-use tool for the simulation of fluid dynamics, mainly targeting the aerodynamics of model airplanes. In the demo video, two very similar fluid simulations, with slightly different visualization schemes, are shown (a jet of fluid colliding with a sphere). Both using the "central moments multiple relaxation times"-collision operator, as proposed b...
Low Cost Walking Quadruped Robot DIY
zhlédnutí 33KPřed 2 lety
Do it yourself quadruped robot. Designed to be cheap to build. Link to the 3D Files: grabcad.com/library/walking-quadruped-robot-diy-1 The upper legs of the robot in the video are 3 mm thick, whereas the updated upper legs in the 3D model are 4 mm. That reduces some of the wobble seen in the video.
Quadruped leg drop test 1Kg load 30cm Ansys
zhlédnutí 1,9KPřed 2 lety
Quadruped leg drop test 1Kg load 30cm Ansys
May I ask you the width of the sensor pcb? I am designing a similar scanner back, but having difficulty in finding whether it is 12cm or 13cm. Thank you in advance.
I am not sure, but you can measure it in the 3d model.
@@yunuszenichowski I will have a look.. thank you again
@@hoonsikkim1115 your welcome! Good luck with your build!
baba kamera noldu bitti mi?
What's scary is the Boston Dynamics showcased a dog like this in 2016, that's just 7 years ago. Today I find them everywhere?
Haha, don't confuse this with anything remotely comparable to boston dynamics work. They have certainly inspired many tinkerers.
happy to see that you enjoyed central moments :)
Oh I absolutely enjoyed it! Big fan of your work ❤
Trash quality
Nic to see this is still being attempted although it doesn't seem like the problems we had ten years ago have been solved.
I don't know if you still read comments on this video, but you could drastically improve the contrast of the picture, if you would flock out the inside of your projector lense. They are very reflective but if you would use something like black 3.0 or other light absorber inside the lense, you would stop bouncing light in the lense and improve picture quality.
I have printed and assembled your design. However I’m running into a bit of an issue with the gear you used to drive the scanner. It doesn’t grab onto the belt nor does it sit firmly in the mount you made. Did you encounter this issue and how did you resolve it?
I tried to express clearly that it's not a finished model. There need to be 2 small bearings in the slit, and the gear has to be printed with a 0.2 mm nozzle. It's also extremely important to reinforce the gear shaft with a m3 screw. There should already be space for a threaded insert. I never tried to print the gear with a normal-sized nozzle, so it's nice to know that the smaller nozzle was actually necessary. I am sorry for causing trouble like that. If you have more questions/problems, you can contact me via email, y.zenichowski@gmail.com
@@yunuszenichowski yeah I understood that the design wasn’t finished but I’ve managed to figure out of modify almost everything else. I appreciate the help. I will print the gear with a .2mm nozzle. Do happen to know the part code for the bearing you used? I will email you if I have any further questions thanks!!
@@will3346 I sadly can't give you any hint at the "right" bearings, because I would have to disassemble my camera to find out, just pick whatever fits. I used 2 to increase the vertical contact area with the shaft. There also is a major design flaw with the model that I only fixed after the video, the sensor has to be turned by 180º otherwise the image is mirrored and the color channels misaligned. Anyway, I am really happy that the video could inspire others to build one as well! That's awesome!
@@yunuszenichowski by pure coincidence I have already rotated the sensor by 180 degrees. However as I’m using a slightly different sensor from a V200 I’ll have to play around with it after assembly.
Hello, awesome, I am curious about how you are achieving the 50xrealtime in the rendering, thanks
Hi, thank you! What exactly do you mean? The 50x refers to the video speedup compared to the original realtime/simulation and rendering speed. It's rendered using a fast volume rendering technique.
Hello, okey, so you have recorded the simulation with some program and played it back at 50 x. On the other hand, could you share what fast volume rendering technique have you used, indicating paper or some technical document? I am very interested in volume rendering Thanks
@@alejandrol9358 Sure! This resource was really helpful: subscription.packtpub.com/book/game-development/9781788296724/1/ch01lvl1sec08/7-gpu-based-volume-rendering-techniques Later I hacked together a very basic and slower ray based volume renderer, but it handles high transparency at high resolution better. The mushiness In the video is because of that transparency problem.
This sounds like it wold be perfect for taking pictures of negatives
True tbh, you could compact it down as well by removing the lens and just placing the negative directly against the scanner. Wait...
@CulturalCats lol
What if you spun the sensor like in a Virtoal Boy or like the lighthouses for VR? I suppose that would make it so you have to put the projector lens way forward and project the image onto something flat it could scan over... or do some serious correction in software?
At least reduce the F music in the background so we can understand your words abiye this nice project . Dislike because of the music , no way to continue watching
😍😍😘😘🥰🥰
Hey great project - could you share more detail on how you controlled the intensity of the light source as well as how you turned it off during the scan? Attempting a build myself and have useful images but want to push it to have adjustment in the light source intensity and to turn the light source off many thanks!
I had implemented a mechanism that controls the light using a diy limit switch and potentiometer (I believe 0-50k ohm). There should be some information about the details in the comments already.
Update 2024?
I am sorry, but too busy to continue something like this. I hoped that someone would pick up where I left off.
This is amazing for art photography
forsen
whats the point of all the megapixels?
Also die BQ und das Rauschen ist doch viel zu hoch, das Händeln sicher nicht einfach und nur für sich nicht bewegende Motive geeignet , kaum für die Zukunft geeignet . Eine digitale Scankamera gab es schon einmal von Carl Zeiss, 150 mp und mehrere Sekunden dauerte der Scan, natürlich nicht für Natur geeignet, Repro Dokumente und Gemälde sicher seh gut.
Be interesting to see astrophotography with it. Stacked 500mp images would be crazy
You sure it's that high in resolution? Don't most scanners top out at a number and the rest is just fake upscaling?
Yes, linear sensors have an enormous scaling advantage. They only require the square root of pixels of an area sensor for the equivalent resolution. So it's extremely cheap to go high in resolution. Obviously there is a price to be paid though.
@@yunuszenichowski Okay then, I was just asking because back in the day I looked into film scanning and was told that most scanners can't practically do more than about 16mp per 35mm frame and after that it's just fake upscaling.
@@fandyus4125 most scanners are designed for A4 paper, which is about 72 times larger than 35mm film, so the resolution of the scanner would have to be over a gigapixel to achieve 16mp film scans.
@@yunuszenichowski Oh, I see, thanks for the explanation! It for sure is very impressive what you've made here.
@@fandyus4125 your welcome, thank you :)
Can you share a little bit more about sourcing scanner? What should i look for? Will this work only with standalone flatbed scanners? Does backlight type matter? Are You capturing picture with laptop or with android over otg cable? Are all scanners ccd or should I avoid some types?
Very cool. It looks like still life images work really well…..thanks. Laurie. NZ. 😊
Awesome concept!
What is that awful noise in the background! Narration would have sufficed. Otherwise I really like the DIY digital camera.
Мазня, кому такое надо.
You live in Germany... Berlin? This is the first video I watched of yours. Really Good!
i am a simple man. i see forsen, i like the video
is there a followup to this this project? i wanna know more about the build process, can you please make a video detailing the building and hardware + software optimisation of the camera?
The camera may be cheap but a lens that can resolve more than 8 megapixels is quite unusually expensive. When I graduated to 4K cameras I found very few lenses could even resolve the full resolution of 4K.
Every interesting. Pointless though without a capable lens
What is this? Is it accurate?
this should be sold as the album cover camera
if you combo that with rotational miror + concave lense.. you can make a werry fast shot.. without need a mechanical sliding.. in actualy .. 489+ mpx
Actually have a sketch of that :) The main problem is the required size for the mirror. I wasn't aware of concave lenses, but with normal ones you would also get a weird focal effect.
I do wonder how difficult it would be to attatch it to, say, an RB67 🤔 kind of like how they have those custom Instax backs A project idea for me!
Bro… Just use a graph flex
man imagine image stitching with that
Take a picture of anything moving and it's gonna be all blur. The pictures outside had to be taken with a regular camera. Those clllllioooouuuudsddss would've been bluuuuuuyrrerrrrr
what software did you use for the editing?
Это искусство
The castle one goes hard.
Would it be possible to use it for astrophotography? Or attached to a telescope?
This is a letter-size scanner. How'd you get it this small?
Baj detected
I got myself a Pentacon 420mm f3.6. Thought about buying a flatbed scanner to produce Gigapixel images. Would probably use once and then never again xD
I'm looking for something like this but shoots video It's close to looking like HDVS
I think you need a telecentric lens. Telecentric lenses maintain a constant magnification over a certain range of object depths, which means that objects at different distances from the lens appear to be the same size. This property makes them particularly useful in machine vision applications, where consistent measurements are necessary, regardless of the object's exact position within the field of view.
I'd love to see more about this project in the future I'm a sucker for odd photo stuff and this is right up my alley
How did you bypass the need for the lamp to initialize the scanner? I’m tearing apart an epson 1650 right now but can’t get the scanner to function unless the lamp is connected.
in my opinion this just looks like a way to take high res 80s 90s style images. theyre very beautiful