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Diffraction Limited
Приєднався 22 чер 2023
This channel contains projects revolving around optics, lasers and cnc machining. The aim is to provide useful and interesting information as well as tools and techniques for those intrigued by the topics above.
Building a Small and Quiet Air Compressor [4K]
In this video the design and build process of a small air compressor unit is shown. It can reach about 10 bar or 150 psi. 3D-Printed parts are used were possible to make manufactioring easy.
Many air compressors rely on momentum to push through the hardest point of the compression cycle and therefore can not operate at low rpm and lack the torque to start when pressurized. The presented design uses a 4:1 reduction and a BLDC Motor to overcome this limitation.
Chapters:
00:00 Intro
00:52 Design
04:15 Piston Machining
07:50 Assembly
18:34 Demonstration
The CAD files will be available soon on my github page: github.com/0x23/QuietAirCompressor
Many air compressors rely on momentum to push through the hardest point of the compression cycle and therefore can not operate at low rpm and lack the torque to start when pressurized. The presented design uses a 4:1 reduction and a BLDC Motor to overcome this limitation.
Chapters:
00:00 Intro
00:52 Design
04:15 Piston Machining
07:50 Assembly
18:34 Demonstration
The CAD files will be available soon on my github page: github.com/0x23/QuietAirCompressor
Переглядів: 39 099
Відео
Examining the NUBB23 Laser Diode Array [4K]
Переглядів 8 тис.5 місяців тому
In this video, a close-up examination of the NUBB23 laser diode array is conducted. The collimation lens is removed to expose the diode assembly, and the beam profile is demonstrated both with and without the collimation lens.
Wave Simulation of a Photonic-IC for Neural Network Accelleration
Переглядів 1,7 тис.6 місяців тому
In this video a simple model of a photonic IC is simulated. Similar devices are subject of current research and are explored for accelerating neural network computations with low energy. The company 'Lightmatter' already offers products based on the technology. The optics simulation program is open source and can be found on my github page: github.com/0x23/WaveSimulator2D
A Cable Robot 3D-Printer
Переглядів 18 тис.6 місяців тому
The video presents a cable driven 3D-Printer, based on the parallel kinematic delta plattform. The machine uses dyneema fishing line as cables and a custom kinematic model running on the 'smoothieboard' printer board. Carbon fiber preloading rods are used to keep the cables under tension, providing the necessary stiffness and allowing for rapid accelartion. The parallel kinematic design has pot...
Crude concept for DIY resist from PCB-Film.
Переглядів 4748 місяців тому
This video shows a crude demonstration on how one could optain a liquid photoresist from easily available materials. Although liquid PCB resists like "Positive 20" exist. They are not easy to get in certain regions. I would be very interested in making this process work, so if any viewers have ideas on how to improve upon this, please leave a comment. Also check out the great videos of 'Project...
30 Nanoseconds after you switch on the Light [4K]
Переглядів 155 тис.8 місяців тому
Having a little fun with the wave simulation, recreating incoherent light with a wide frequency spectrum. In contrast to the ordered oscillations of laser light, I always found it hard to imagine how 'normal' everyday light would look like on the wave level. The video was made to answer this question. The video was inspired by the 'Light & Coherence' series on the Huygens Optics channel: ua-cam...
Fiber Optics - Simulating Light in Optical Fibers
Переглядів 6 тис.8 місяців тому
This video shows 2D wave simulations of optical fibers and presents differences between single-mode and multi-mode light propagation. The simulation code is available on Github: github.com/0x23/WaveSimulator2D 0:00 Simulation Program 1:37 Fiber Simulation 1 - Varying Diameter 3:04 Fiber Simulation 2 - Varying Wavelength 4:08 Fiber Simulation 3 - Moving Source 4:31 Endscreen
Fiber Optics - Multimode vs Singlemode Fiber
Переглядів 1,1 тис.9 місяців тому
Light is coupled into different optical fibers and the difference between multimode and singlemode fibers is demonstrated. The focus of the video lies on practical demonstrations and not on theory, as there are already many good resources on the subject. 0:00 Introduction 0:15 Fiber modes 0:48 Setup 1:24 Singlemode vs Multimode 3:15 Swapping fiber 4:00 Fiber alignment 5:04 9µm Fiber 5:40 Endscreen
Fiber Optics - Extracting Ceramic Ferrules from Optical Network Cables
Переглядів 3889 місяців тому
This video show how ceramic ferrules can be extracted from fiber optic cables. Ceramic ferrules are made of a hard ceramic material and have a very small precision bore of 125 microns in the center.
Free Optics Simulation in Blender - Tutorial
Переглядів 3,7 тис.9 місяців тому
This video shows how to setup Blender and the LuxCore renderer to perform 3D optical simulations (ray optics). Both programs are free and open source ! With these tools you can simulate any combination of: * Lenses * Mirrors * Prisms * Laser beams * Freeform optics * Screens The physically based LuxCore renderer supports efficient pathtracing (Bidirection Metropolis Light Transport) to handle i...
Laser Diode Back Reflection
Переглядів 3519 місяців тому
Small demonstration of how back relfected light can destroy coherence of a laser diode. A collimated laser beam is used in a simple 'glass plate fizeau type interferometer' to create a stripe pattern. Adjusting the angle of the incident light beam to be exactly perpendicular to the glass plates surface creates a reflection that is focused back into the laser diode chip by the collimating lens. ...
Ruling Machine Part 3 - Air Bearing Simulation
Переглядів 57111 місяців тому
This video demeonstrates how to design and evaluate planar air bearing pads using a python simulation program. The code can be found on github: github.com/0x23/open-air-bearings
Ruling Machine Part 2 - Base and X-Axis (DIY Air Bearings)
Переглядів 543Рік тому
Bulding the machine base from glass plates, adding the magnet preload bar and assembling the X-Axis.
Ruling Machine Part 1 - Testing the air bearing stage
Переглядів 925Рік тому
Testing the prototype of the magnetically preloaded air bearing stage for the grating ruling machine. The next part (Part 2) will show more details of the building process. Information about building and designing custom planar air bearing pads from glass will be released in a seperate future video. Check out the "Open Air Bearings" github repository: github.com/0x23/open-air-bearings
whats with the weird voice sound?
What version of blender is this on? LuxCore version 2.6 should work between Blender 2.82 to 2.93 LTS but on 2.83 LTS it doesn't work.
Any ideas to correct divergecy? We can put cylidrical lens above the protection glass, to correct fast axis. Compare to nubm35, this diode have agressive divergency, according to less focal range of primary lens, that you removed
how do i make my own simulations with this
Blind Willie you was born to die on bgm sounds slightly better I guess!
This is excellent work! What type of applications would this specific type of compressor be good for?
Impressive
Small and powerfull,
This is a very well done project and solid design. Good work mate!
What about duty cycle? What kind of applications are good for this compressor design?
enoyed quite a bit and learned lots
How many LPM is it? Thanks for sharing...
How much CFM or volume can it push at the 90-120psi mark?
This is a brilliant piece of work!
very cool project, looking forward to he air bearing pads video, it seems other youtubers usually use graphite because its much more forgiving but their air pumps also seem much more powerful have you considered the other material and is it less efficient air wise? are glass pads difficult to make?
This is a great video! What did you use to annotate your 3D model for the video?
As a full-time RVer who keeps his toyhauler fifth wheel triple axle tires at 95PSI, and doesn't want to pay for ViaAir, you might have a market. I had a Ryobi (meh, but I don't have Dewalt tools), that could do the tires, but I let it run too long one day and now it can't do that kind of pressure anymore. You could have a market, sir.
Mindblowing. Is it accurate to the lenses shape and resolution, if you place it in front of the camera?
Hello thanks for the sharing the neat code. I came from @HuygensOptics that he mentioned the codes are from here. I just have one question regarding the cupy/CUDA package install. Will you be able to demonstrate the packages dependencies in the future videos? I somehow had error messages about the "cupy\cuda\jitify"...which is very frustrating. (I suspect is either NVIDA driver or CUDA toolkit is not installed properly...trying it now...)
What type of driver did you use?
It was a simple Constant Current / Constant Voltage power supply module with and LCD screen (you can see it in the background). I had no problems with any of my laser diodes. The important thing is that you ramp up the voltage until you reach the desired current and do not rely too much on the current regulation of the supply + dont connect the diodes while the output of the power supply is already on.
Oh so you didnt use a driver between the diode array and power supply? I suppose if you have a quality power supply, you wouldn't have any problems with current fluctuating. Very interesting.
@@npatel111I wouldnt call it a high quality PSU. There is some minor ripple current, but its not an issue. High power laser diodes are also less sensitive in my experience and often dont contain monitor photo diodes anyways - so you just drive them at their rated current. If you stay a bit below the maximum rating of the diodes it should work very well.
Nice Video. :) Which wire is positive, which negative? Green positive, blue negative? My datasheet is incomplete.
Yes, blue is negative.
Apart from the audio interference in the beginning. This video is phenomenal. Great work!
like a sun
You "see" NOTHING until light starts bouncing off stuff and hits your eyes.
Sometimes when i look into the darkness i can see tv static and i dont know why
What's the calculationtime? (or was this realtime?)
That will melt into a pile of useless plastic.
3:56 multimode propagation does completely not delay the wavefront but disperses it over a longer time period. The more direct mode will arrive at the same time as in the single mode case. The delay shown is also inconsistent with the earlier examples of varying fiber diameter, which should show the same effect in multimode propagation.
ray tracing lore
10 bars would burst things into pieces! Truck Tyre Pressure is around 8 bar. (120psi) I cannot trust this design can produce that much amount of pressure. If it produces, it is dangerous and requires regulatory compliance.
Something is off. The entire room is 6 ft across and the table is 1 ft high. Is that right?
just rob mama fridge and ejoy 27dbi with 12ATM.. ez púz..
The design of the compressor is outstanding. At the moment I am printing the parts. Has anyone found a source for the other parts? I am looking especially for the seals and the pistonheads.
Nice, let me know how it worked out or add an issue to the github if you find some problems. I actually migh do a video on the parts you mentioned. As for the Cylinderpipes a good source are gassprings. You hace to open them up (which can be dangourous without the proper technique due to very pressure and oil) and then slice off rings. By design the inside is made to be a very smooth and a durable surface for seals. As for the seals them self search for 'Piston U-Seals' make sure they do not have a steel core. Also be aware that they have to be slightly oversized for the cylinder bore to seal properly. Good luck with your build !
Hello, I googled around the last days, but until now I was not able to find the mentioned seals in the needed dimensions. Do you remember, where you bought your parts? Also the cylinder heads. The 3D-printed parts worked out so far, the tolerances are a bit snug. Maybe a version of the parts with some larger tolerances would be helpful for a lot of people.
@@Ulm26mAs mentioned in the video I got the cylinde heads and seals from a cheap air compressors for car tires and alike. But I also bought some U-Seals from ebay as replacement. The OD can be a bit larger so you have some tolerance and should be able to finde some appropiate seals.
Bit I think the best order would be to look for cylinder - then for the seals - then adapt the CAD accordingly and then print the parts.
my life has ended
While I'm loving the content for this video.. I just can't keep watching it... The AI voice has sharp high frequency screeches going in.. Sounds like wine glasses clinking together or like a sharp knife is trying to "cut" through a wine glass... It seriously hurts the ears and gave me a huge head ache... Other than that, I wish I could continue the video.. I'm so curious and interested, but I just can't live with that screeching sound..
using particle physics simulation instead of rays, you get artefacts of higher intensity light around the edges. (like the shelves or the cat ears) It definitely looks cool though.
Have you experimented with any single collimating lenses after the stock array was removed?
Where is the 10-hour version to sleep/study/relax to? :P Or I guess 36 microsecond in this case..
This is actually so sick. Seriously would consider using something like this in a micro shop for delicate work or testing. It's basically got VFD standard so you can adjust duty cycle dynamically. 3D printers and just the overall democratization of manufacturing has seen some amazing things come from it.
Where is that quiet?! You modifyed everything to the worse leaving the most important part that would make the whole thing actually quieter 😂that some bad ingenuity 🤣😂 the valve are always the loudest parts on the compressor not the electrical Asynchron motor that drives it man YT gets more and more retarded while Time passes 🤦♂️
My good sir this is awesome. My onky thoughts are that youd benefit greatly from getting yourself an ES15, and heat set inerts. Also, what sort of airflow can this thing get at pressure?
In a doctor's waiting room a few weeks ago, I was quite literally told by a receptionist, "I'll be back in less than a nanosecond." When she came back about 20 seconds later, I politely explained exactly how difficult it would have been to have kept her promise. [True.]
Looks like a bomb
Now operate it until failure
I have to wonder if this basic concept can be modified to be a vacuum pump... Need one for a vacuum table for my CNC mill. It does not have to be a very high volume but needs to supply a decent level of vacuum for long periods so maybe using printed parts is a step too far? Also, lubricating the piston will need to be looked at... This unit will need manual lubrication at quite short intervals otherwise the rings are going to overheat and melt at some point.
Really cool looking. Slightly less cool looking than it would be if UA-cam's compression algorithm weren't so vigorously soiling its pants.
A white incoherent light is not to be confused with an incoherent white lightweight, Which is me leaving the pub at 2am.
Amazingly done
Hi, as the other person said I love the idea of using screws to hold the bearings in place. I know in your video you said that the check valve was not shown properly but I downloaded the fusion 360 file and was wondering how the check valves work, and if it would be possible to get the files for them?
Thanks. I plan to add the inner workings of the check valves to the CAD in near future and maybo make a supplemental video to this one too, where I show how htey work. Its essentially just a springloaded rubber pad on a hole.
@@DiffractionLimited Thats awesome thank you for the reply! I will subscribe and wait to see it!
Despite additive tech being available for decades now, one could rarely see something so useful being made on non-enterprise level. Brilliant work, every stage of it, really!