![Christophe Yamahata](/img/default-banner.jpg)
- Видео 52
- Просмотров 394 885
Christophe Yamahata
Швейцария
Добавлен 27 апр 2008
Microengineering, microrobotics & microsystems (MEMS), as well as (more or less) related technologies.
Annual Calendar: The MIH Watch
An annual calendar watch is a mechanical timepiece designed to display the date, day of the week, and month. It only requires manual correction of the date once a year, on March 1st.
The MIH annual calendar complication was invented by watchmaker Ludwig Oechslin while he was the curator at the Musée International d'Horlogerie (MIH) in La Chaux-de-Fonds, Switzerland. This annual calendar is an additional module integrated into the ETA Valjoux 7750 calibre. It consists of only 9 parts
➜ Explore the interactive animation on Observable
observablehq.com/@christophe-yamahata/mih-watch-annual-calendar?collection=@christophe-yamahata/horology#animation
The MIH annual calendar complication was invented by watchmaker Ludwig Oechslin while he was the curator at the Musée International d'Horlogerie (MIH) in La Chaux-de-Fonds, Switzerland. This annual calendar is an additional module integrated into the ETA Valjoux 7750 calibre. It consists of only 9 parts
➜ Explore the interactive animation on Observable
observablehq.com/@christophe-yamahata/mih-watch-annual-calendar?collection=@christophe-yamahata/horology#animation
Просмотров: 28
Видео
Unitree Go2 Robot Dog | Leg Animation and Physically Based Rendering Using KeyShot 9
Просмотров 123Месяц назад
Simple animation and physically based rendering (PBR) of the Unitree Go2 robot dog's leg using Keyshot 9. The CAD model from Unitree is available for download on Sketchab: sketchfab.com/3d-models/robot-dog-unitree-go2-7af84eb9ba834f27bbac818a8b96e2da
IRB 120 industrial robot: Animation using Three.js and Observable Framework
Просмотров 782 месяца назад
This video demonstrates the deployment of a 3D computer graphics animation using the Observable Framework. The underlying code is based on the JavaScript library Three.js. You can access the webpage "IRB 120 Animated with Three.js" at this URL: christophe-yamahata.observablehq.cloud/irb120-animated-with-three-js/ keywords: forward kinematics (FK), inverse kinematics (IK), robotics, javascript, ...
OSS 117 vs Macron (vs lions) - Thin-plate spline model animation
Просмотров 3253 месяца назад
Amazing what can be achieved with Thin-Plate Spline Motion Model for image animation (TPSMM)! Video prepared using the following tools: 1. Background removal: remove.bg 2. TPSMM running with Visual Studio Code GitHub repository: github.com/yoyo-nb/Thin-Plate-Spline-Motion-Model 3. Video edition: DaVinci Resolve 18.6 For the video edition, given the camera's movement, I used the Planar Tracker (...
Calque - Tracing paper
Просмотров 3174 месяца назад
For those seeking to extract data from printed graphs, "Calque" offers a convenient solution. I have crafted this online tool to simplify the manual extraction of data points from raster graphical representations. You can access this web tool (and fork the script) via the following URL @Observablehq: observablehq.com/@christophe-yamahata/on-line-tool-calque
Quality control of a laser-lensed optical fiber
Просмотров 2285 месяцев назад
Close-up view of an optoelectronic setup engineered within Miraex SA for measuring the optical coupling of single-mode laser-lensed fibers used for the manufacturing of fiber-optic sensors.
Commander 6 (C6) micromanipulator
Просмотров 4185 месяцев назад
The C6 is a great micromanipulator developed by the Fraunhofer IPT. Watch this video for a brief demonstration showcasing the capabilities of this 6-degree-of-freedom robot.
Commander 6 (C6) micromanipulator: Basic demonstration with a serpentine path
Просмотров 1215 месяцев назад
The C6 micromanipulator developed by the Fraunhofer IPT proves to be a great tool for manipulating optical fibers during the assembly processes of optomechanical microsystems. This video showcases its capabilities through a demonstration of a serpentine path. Utilizing a basic Python script, the C6 executes this 1 mm × 1 mm meander path.
Tutorial: Using SolidWorks Simulation and Blender's Shape Keys to animate a 3D model
Просмотров 46511 месяцев назад
This tutorial shows how to easily animate a flexible mechanical part in 3D. This is done using SolidWorks Simulation (finite element calculations) and Blender. Blender's Shape Keys are at the heart of this process. The file formats used to move from one application to another are the following: *.stl or *.stp (STEP), *.wrl (VRML), *.glb or *.gltf (glTF) ▬▬ Content of the video 0:00 - Introducti...
Tuned Mass Damper: Characterisation using discrete Fourier image analysis
Просмотров 106Год назад
Tuned Mass Damper: Characterisation using discrete Fourier image analysis
MEMS push-pull electrostatic actuator
Просмотров 2,7 тыс.Год назад
MEMS push-pull electrostatic actuator
Detent escapement | Régulateur à détente Raúl Pagès RP1
Просмотров 9 тыс.Год назад
Detent escapement | Régulateur à détente Raúl Pagès RP1
Electrostatic Rotary Stepper Micromotor: Recording with a high speed camera
Просмотров 221Год назад
Electrostatic Rotary Stepper Micromotor: Recording with a high speed camera
Bust of Nefertiti: 3D model vs. original version exhibited at the Neues Museum in Berlin
Просмотров 401Год назад
Bust of Nefertiti: 3D model vs. original version exhibited at the Neues Museum in Berlin
Ferdinand Berthoud FB1L: ANSYS SpaceClaim model of the moonphase complication
Просмотров 498Год назад
Ferdinand Berthoud FB1L: ANSYS SpaceClaim model of the moonphase complication
Ferdinand Berthoud FB 1L: Blender model of the moonphase complication
Просмотров 451Год назад
Ferdinand Berthoud FB 1L: Blender model of the moonphase complication
Tycho Brahe's observations of the planet Mars (1582 - 1600)
Просмотров 656Год назад
Tycho Brahe's observations of the planet Mars (1582 - 1600)
A 3D model of the double-headed serpent
Просмотров 3972 года назад
A 3D model of the double-headed serpent
Automated photolithography with the idonus UV-EXP150R mounted on an XY stage
Просмотров 1243 года назад
Automated photolithography with the idonus UV-EXP150R mounted on an XY stage
Retrofitting of an MA6 (Karl Suss) with the idonus UV-LED Light Engine
Просмотров 855 лет назад
Retrofitting of an MA6 (Karl Suss) with the idonus UV-LED Light Engine
Water-cooled rotary union designed for high vacuum
Просмотров 1,1 тыс.7 лет назад
Water-cooled rotary union designed for high vacuum
Retractable pen (click pen): How it works
Просмотров 68 тыс.7 лет назад
Retractable pen (click pen): How it works
Midnight Nuit Lumineuse: Piezoelectric effect used to backlight the dial of a mechanical watch
Просмотров 2,7 тыс.8 лет назад
Midnight Nuit Lumineuse: Piezoelectric effect used to backlight the dial of a mechanical watch
Modern Times: A sequence with many many gears (frame by frame analysis of the factory scene)
Просмотров 4098 лет назад
Modern Times: A sequence with many many gears (frame by frame analysis of the factory scene)
Cool les explications. Surtout l'absorption des IR.
Very nice
besides of when it clicks, it doesn't explain anything.
🎉🎉🎉🎉🎉🎉😊😊
can you share it!!😅😅
The model (Blender + STEP) is available here: sketchfab.com/3d-models/ferdinand-berthoud-fb-1l1-af79fc585d264665b4713fb7912cdbea
@@cyamahat It is not free :(
@@lamngoc9896 You can still download other models from me on the same platform or on GraCAD (grabcad.com/c.yamahata-1).
And now within 1 century,its evolve a lot!… from just that kind of watch to today smart watch!…😮
All is revealed
Without them we wouldn't be watching this
"Them"?
Is it similar with Christof Claret Mostoso
Yes, the keyword is "detent escapement". It can be seen in this 3D modele of the Maestoso: ruclips.net/video/boZjuk8Dq20/видео.htmlsi=NmXv0sd8q16Cf4Aw
N'oublie pas Emmanuel, que les français ont voté NON à la constitution européenne. CQFD
Super!
How does it work and usage?
The mechanism relies on the elastic properties of material. Each beam is a flexure. Examples of applications: micromotor / watch mechanism > ruclips.net/video/n3YMjgbhvTA/видео.html / skfb.ly/onpX6
Accutron 2020 👀
Баланс немного бьёт. Интересный спуск
Вначале показалось, что спуск постоянной силы, а потом нет, просто избыточное усложнение.
Very nice.
Could you, please, make a video on how the twist mechanism of mechanical pencils works? I have seen some videos that explain the clutch mechanism, but I haven't seen any video that explains the screw based mechanical pencils. Thanks
9:16 What’s the name of the electronic sounds right here? I wanna use this for a project.
Raymond Scott, "Domino" ( ruclips.net/video/-bVRWTDFB-A/видео.html )
At the very beginning it says this is a shortened version. Anyone knows, where the full version is?
Full version was found on archive.org > archive.org/details/HowaWatc1949 (downloadable). It can also be found on RUclips: ruclips.net/video/rL0_vOw6eCc/видео.html (Hamilton's channel).
Maybe you could you use it for aligning chiplets or other really dense connectors. Just making things up, don't know anything about that.
Neat. Do you need to use very high voltages like you do for macroscopic electrostatic devices? It seems like the voltage can't be that high at that small scale without arcing over.
Hi John, For these experiments, we used 80 V signals and microstepping (see the sequence at the beginning of the video). To answer your question, I have reproduced below some lines from a technical report we prepared at the time. You can of course find much more information in the scientific paper indicated in the description of the video ( dx.doi.org/10.1109/JMEMS.2010.2040139 ). -- The rotational speed is determined by the stepping frequency and by the motor torque. The torque decreases as the speed increases. The motor could be properly operated (without skipping steps) up to a stepping frequency of 5000 steps/s, which corresponds to an angular speed of 0.83 °/ms (see the last sequence of the video). Note that this speed could not be achieved using a half stepping sequence because the torque varies too abruptly in such case. To achieve higher speeds, we used microstepping with ramping signals. The 3-phase voltages were ramped up and down in 16 microsteps.
"Who keeps clicking their pe-"
shit is that daft punk
Super grade instruction. Can I use it in a course on Enthusiast Level Watchmaking I am developing please? I want to equip watch lovers with the tools, instruction and practice they need to enjoy and service their mechanical watches themselves.
No problem. Remember that this is a shortened version of the original movie ( archive.org -> archive.org/details/HowaWatc1949 ).
It took a 1940's film to perfectly explain to me how a balance wheel and an escape mechanism work together. However, the many 21st Century videos just could not explain it well enough for me to get it.
STL file please
You can check my profile on GrabCAD to get that model.
@@cyamahat Thanks.
I have been looking for someone who can fix my cheaper pens. Can you fix them? For how much? These days, people usually fix only the expensive things. But I’m interested in sustainability for all things.
Thanks for posting this.
Amazing mechanism.
Hi, do you have the CAD model for this joint and is this able to be 3D printed using the normal PLA filament?
Try with this 3D model (virtual pivot): sketchfab.com/3d-models/virtual-pivot-def951bf1f7a4088bb72c57a07900aa3 This can be 3D printed but the beam should be made thicker.
@@cyamahat how many degree can it rotate?
@@cyamahat I actually wanted to find a way to 3D print a revolute/hinge joint (1 dof for rotation) that link a tool to an robotic arm which can return to original position without external force and can comply. Do you have any idea how it can be done?
@@lhlee1580 +/-15° (30°) with this design -> dx.doi.org/10.1109/JMEMS.2012.2189367
@@lhlee1580 Maybe you can find something inspiring from Jelle Rommers's work ruclips.net/video/DAngcygU7tc/видео.html
Awesome 👍
woooowwww amazing how can i get the project for my video i'll give you the credit
Thank you for the message. The HQ video is available here: christophe.yamahata.fr/videos/Egyptian_Fruit_Bat_in_Slow_Motion_(HQ).mp4 - You should also visit this website: tabletopwhale.com/page13/ (Eleanore Lutz) - Finally, the original video is available on RUclips: ruclips.net/video/YTKNZDjSaXQ/видео.html
Thank you so much for this.
Sir may I know the software name used to create this impressive video
Thanks for the comment. The CAD file was prepared with Spaceclaim (any other CAD sofware would work), then converted in STEP format to animate it in Blender. Final step for rendering was completed on sketchfab.com . Unfortunatelly, the lawyers from IWC didn't like my work at all (a kind of consecration, although frustrating): they forced sketchfab to delete my file and I just had a few hours to take this screen capture. You can download the CAD file on Grabcad if you wish. I let you find it by yourself (for the reason mentioned above...).
I watched 3 times to understand the concepts. Thanks.
What a great and clear explanation. I had been misunderstanding the power transfer between pallet fork and bslance wheel it makes so much more sense now
pallet "jewel" huh?
incredible video Christophe, thanks for sharing
Come motore a scoppio di 4 tempi 😁
8 seconds is about right . Still this is a great video. Thanks . I love my mechanical and automatic watches . ( I have a few quartz watches also )
nice
A 6-mm-diameter pump. This is amazing.
hi.it might seems silly but may i ask, how did you find that video?
?? Well, I made this animation. If you follow the link, you can get the 3D model.
@@cyamahat Thanks a lot Christophe. My actual question was about the knowledge behind the video. Did you disassemble the watch and to figure out its mechanism?
@@arawolf1990 If you check the video at 0:52, you will see a photograph of the calibre. The model is based on pictures found on the Internet, as well as on Pallweber's patents and simplified schematics found on the website of the brand.
@@cyamahat Thank you so much for the info. you did a nice job my friend.
Great song choice!
Hey Christophe, For a project I've to construct the mask allignment for a wafer. For X and Y displacement it is almost finished, but I also need to do the Z rotation. It has to be done with hinges like your nice concept. Do you have any drawings of this device that I can use. Thanks in advance
You may find all useful information for the caluclations in this article: www.researchgate.net/publication/254060012_High-Angular-Range_Electrostatic_Rotary_Stepper_Micromotors_Fabricated_With_SOI_Technology
But where the balance gets the energy from ? Hairspring only "balance" the swings, not store the energy.
Energy comes from the mainspring (right hand side in the giant in-line movement). You can check the originial video (archive.org/details/HowaWatc1949) to get a clear explanation of the working principle.
Christophe Yamahata but I mean only the part of fork, balance wheel and escape movement. Now I've noticed that the escape wheel push the fork only because of perfect shape of pallet jewel. This is the most important part of the video. The escape wheel has the teeth which slides thru the pallet jewel only because of the perfectly shaped jewel. Tooth pushes the upper pallet jewel which makes the fork swings than the balance wheel moves. Hairspring makes the move stop and than move the balance wheel back. The balance jewel pin pushes the fork which release the escape wheel by the lower pallet jewel. That's it.
Here is a 3D model of a Swiss lever escapement: skfb.ly/LIwX. It shows step by step what happens.
Thanks that`s what I thought. Now it`s clear.
Christophe Yamahata - that archive link has since vanished. Any idea where that video can be found?
What a complicated life we do lead.
im going insane
Nice song choice. Cute kids. Thanks for sharing.
fantastic video
Nice