Maskless Wafer Stepper Part 3: Electronics and Software. @HuygensOptics

Huygens Optics | Maskless Wafer Stepper Part 3: Electronics and Software. @HuygensOptics | Uploaded February 2020 | Updated October 2024, 1 hour ago.
This is the third (and final) video on the DIY maskless wafer stepper project. It discusses the electronics and software.

0:00 General intro
0:49 Wafer stepper system overview
1:48 Dynomotion KFlop controller card
2:42 Wafer stepper control electronics
6:32 Digital wafer stepper software

I tried to build it from very cheap components, most of which I bought second hand on Ebay. I also used an Arduino Due and a KFLOP CNC card from Dynomotion to control the movements and used Microsoft Visual Studio for programming the code.

If you are new to the project you might want to check out the previous two video's first:

First video (optics)
youtube.com/watch?v=_w0Z2Y5vaAQ

Second video (mechanics)
youtube.com/watch?v=MdRwiI6VLmk

I also published the first results of making small Fresnell lenses with this machine:

youtube.com/watch?v=SpKx8jPb3H8

This video shortly features one of the art pieces of the dutch graphic artist Maurits Cornelis Escher. I'm only using this picture to demonstrate the principle o image stitching as it is used in my software and not for any commercial applications. If you are interested, please visit the Escher foundation and take a look at his fascinating work:
mcescher.com/nl/stichting

Photomasks Explained (Contact and Projection): how to etch Thin Chromium Layers

$Wave frequencies passing a grating This video shows a simulation of a transmissive grating on a glass plate that sends different wave frequencies in different angular directions. In the second part it show how it also does this if the incoming wave is a linear sum of 3 different frequencies. Thereby it performs a Fourier transform on the incoming wave signal (time domain) to intensity in an angular direction (a spectrum in the frequency domain) It was reuploaded because the original version contained an annoying error in the frequency indices. The Python code used for the wave simulation can be found on the @DiffractionLimited channel$ $Telescope Resolution vs. Aperture and Wavelength Discussion about of the fundamental limitations imposed by aperture and wavelength on the maximum sharpness of a telescope. By discussing the energy mechanisms behind diffraction, I try to explain why this relationship exists. In the last part I discuss the implications for the recently launched James Webb telescope. Contents: 0:00 Intro 2:43 Short experiment with aperture 4:47 About angular resolution 7:44 Resolution comparison of 3 different telescopes 10:13 Diffraction phenomena explained using energy as a basis 14:08 Experiment showing edge diffraction in real aperture 17:14 The James Web resolution explained using aperture and wavelength More about the background of the microscope experiment shown here is explained in this video: https://www.youtube.com/watch?v=TshYfYIxR9E Electromagnetic theory taken from Fundamental University Physics, Part 2: Electromagnetism by Marcelo Alonso and Edward J. Finn More information on the application of small telescopes can be found on the oresat.org website: http://oresat.org Aberrator 3.0 is a software program written by Cor Berrevoets to simulate star-images in different telescopes. It can be downloaded from aberrator.astronomy.net Where indicated, images from the NASA.gov website and Wikipedia.org were used. Link to the EON space labs pagina on LinkedIn: https://www.linkedin.com/in/eonspacelabs/ Image of Cubesat: https://www.satcatalog.com/component/6u-cubesat-platform-1117/ Huygens-Fresnel principle: https://en.wikipedia.org/wiki/Huygens%E2%80%93Fresnel_principle Do you like what I do and want to support it? Iv recently started a patreon page: https://www.patreon.com/huygens_optics REMARK: Huygens Optics has NO commercial ties with any of the products or companies featuring in this video. Everything shown is meant exclusively for educational purposes. Short third party clips are sometimes used, assuming fair use policy and always with a reference to the original source in the description. Did I forget you? Please let me know and I will set it straight$

Bathroom Quantum Fields and Vacuum Energy

Foucault test of 400 mm diameter spherical mirror (short video)

Optical Interferometry Part 1: Introduction & ZYGO GPI layout

$Optical Interferometry Part 2: Measuring Optics with a Zygo GPI LC This is the second video on optical interferometry, which is dedicated to measuring the wavefront shapes of a mirror, 2 lens assemblies and 3 microscope objectives. Contents: 00:00 Intro 02:04 Video camera upgrade 04:23 DFT-fringe software 06:57 Transmission Sphere reference calibration 12:29 Shape of a Zerodur Perkin Elmer wafer stepper mirror 14:55 Wavefront deformation of a Canon FD f/1.2 camera lens (1980) 18:10 Wavefront test of a modern Canon EF 24-105mm f/4 zoom lens 19:19 Microscope objective testing 22:44 Nikon Plan Fluor 10x / 0.30 23:17 Leica Fluotar 20x / 0.50 25:23 Nikon Plan APO 20x / 0.75 Link to Optical Interferometry Part 1: https://www.youtube.com/watch?v=l32_QbcdUiw&t=614s Link to the video on measuring MTF: https://www.youtube.com/watch?v=1AzQ4y_qwrM DFTfringe forum page: https://groups.io/g/Interferometry/topics DFT fringe download: https://github.com/githubdoe/DFTFringe/releases Dale Eason on YouTube: https://www.youtube.com/@UCPj57WFSSLpVqPir7Im-kiw lens config Canon F1.2 By Jake Low - Own work, CC BY-SA 4.0 (modified) https://commons.wikimedia.org/w/index.php?curid=75904563 Laser diffraction pattern By Wisky - Own work, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=15113998 Do you need to be referenced but I forgot to do that? Let me know and I will set it straight.$

Light & Coherence part 2: Spatial Coherence (and the Double Slit Experiment)