Stuff I do and did:

Newest:

Face shield. 3D-printed and comfortable Even though it is made from hard PETG plastic, one size fits all comfortably. My inventions here are springs that make its head band very stretchy, and softly places pads on the forehead. (Put on the net 2020, beginning of "pandemic".)

Sonar for the blind It helps blind people to hear the shapes around them. Some can use echolocation to "see" with sound. My invention makes it possible for those with less of a talent for that. (Put on the net 2018-11-6. Made a year before?)

Simplest multiplication circuit This is electronics that can be used in computers, phones, etc. There is no simpler design than mine here, for 3*3 bit in and 6 bit out. (Put on the net 2018-9-19. Made early 2016)

Circuit programming competitions where I compete and win. 2018
World class difficulty for these at Stack Exchange:

Super Strong Design It bears a heavy man of 125 Kg and is made from just 58 grams of ordinary weak PLA plastic. My design is the secret. It spreads the forces very well. It is 3D printed with my experimental slicer which is extra smooth. (Put on the net 2018-8-8)

Silent Motor Drive These are the electronics and the motor, working together silently. (Put here 2017.12.4)

Silent Robot No.2 Bigger and lighter than my first design. (Put here 2017.5.1)

Silent Robot I built this robot and made it silent and smooth by using cybernetics and digital signal processing. (Put here 2014.10.27)

Fiddle, self built. I made this green fiddle mostly from 3D printed bioplastic. The design is from Hovalin. Koka Nikoladze plays it well. Made 2016.

3D printer, self built. And it works quite well now. I can make plastic parts of quite hight quality on this machine, provided I wait. Or I can make them fast and sloppy. It is a Delta printer, which means that the pen writing with melted plastic is moved by diagonal rods of carbon fiber, which are light, strong, and fast, but tricky mathematically. Made 2015.

Fastest Phone Cryptography. Specifically for the ARM processor, which is used in phones. 50% faster than best competitor. I also tell a little how I did this. Made 2001. Put on the net 2016-2-24

The Sound Camera Entries

Sound Camera v.6. This is a prototype for imaging turbulence noise. It does its job, and what you see are the tornado shaped sounds from a very small tornado from a fan. Made spring 2018. Put on the net 2014-11-30

Sound Camera v.2. I used sound instead of light to take this picture of a clothes hanger. This is the second acoustic camera I designed and built, and it has a much better objective than my first one. It seems to be the highest resolution sound camera on the net. Made spring 2014. Put on the net 2014-7-7

Sound Camera. I used sound instead of light to take this picture of my electric guitar, with my self designed acoustic camera. Made spring 2012, but put on the net 2013-11-11

Sound Wave Video. Animation of a sound field, taken with my self designed sound camera. Made spring 2012, but put on the net 2013-11-11

The Memory Entries

My Best Patent. My very self made patent. It got accepted by the European Patent Office. Making it correctly and arguing logically with patent officers was a lot of hard work. It was for making cheap big memories, for Opticom. Made in 2006, but put on the net 2014-2-14

Thin film memories. My patented method for producing very large memories cheaply and efficiently, using thin film.

Bigger flash memories I can put one bit extra per cell in flash memories, thus increasing their capacity by about 30% (Put here 2009.2.16)

BadRAM for FreeBSD

BadRAM for FreeBSD A program to make computers avoid the bad parts of bad RAM. It is quite new, so it has not been tested much yet. It might actually work. (Put here 2012-12-16)

Block size of flash

Block size of flash How I measured the block size of some flash memory. It was 8 kB. (Put here 2006-6-19)

The Market Research Entries

Market segmentation test I found four distinct segments when searching through data not meant for finding segments. (Put here 2012-9-20)

Accelerated research I found this method of accelerating research. It's used for marketing. (Put here 2011-07-04)

The Java Physics Entries

A radar simulation, in Java It calculates the reflections and transmissions of radar waves. YouTube if you lack Java. (Put here 2012-6-11)

Waves in a disc, in Java Posted here because it is beautiful. You Tube if you lack Java. (Put here 2012-06-05)

Complex flow, in Java Fluid mechanical simulation of chaotic vortices. YouTube if you lack Java. (Put here 2010.02.01)

Vortex flow, in Java Fluid mechanical simulation of a vortex standing in the wind. YouTube if you lack Java. (Put here 2010.01.20)

Waves, in Java A physically correct wave simulation, in Java. It has low numerical and real dispersion. YouTube if you lack Java.

The Quantum Physics Entries

Quantum pairing, in Java The spontaneous crystallization into bound 2-particle states. Same simulator as below, except the fermions are now attractive, and the distribution starts as totally random. YouTube if you lack Java. (Put here 2010.01.17)

Quantum mechanical simulation of 2 particles, in Java The Schrödinger wave equation, in Java. It is fast, stable, unitary, and pretty. The pictures are used in the article below. YouTube if you lack Java. (Put here 2010.01.13)

Explaining the Many-Worlds interpretation of Quantum Physics With pretty pictures. A tale of how, through mental visualization of multi dimensional wave functions, I understood this as a student. (Put here 2010.01.05)

double complex U[16][16][16][16][16] [16][16][16][16][16] [16][16][16][16][16] [16][16][16][16][16] [16][16][16][16][16]

Quantum Physics For Programmers Instead of using formulas, I use short programs to illustrate Quantum Mechanics for programmers. (Put here 2009.12.31)

Other Stuff

3D printing. 3D printing of my model of the icosian group. On an Ultimaker, 2013-6-24 On a Stratasys, 2007-12-6

Dodecahedral packing. What happens if one packs dodecahedrons tightly? The space must be curved. Either parabolic or hyperbolic. Parabolic packing gives the icosian group, in the picture.

Muscle Monitor An iPhone app that monitors vibrations from muscles. Works quite well. (Put here 2012-09-16)

More Possible

My blog: http://morepossible.com This blog has existed for a while, and has a few interesting posts. I guess more will come. (Put here 2012-01-15)

Cochlear simulator The human inner ear separates sounds into tones, sort of. I simulate that. I also simulate some further processing in the brain. (Put here 2011-03-03)

find similar My very powerful search engine. When given faulty misspelled terms, it will find the entries that match probabilistically. This instance searches among names of music albums, tracks, and authors. (Put here 2010-11-10)

Correlation is Evidence of Causation. A simple proof that correlation is evidence of causation. (Put here 2010-9-19)

Fingerprint crypto key I found several ways of using fingerprints as cryptographic keys. (Put here 2010.09.17)

The Best Dithering Øyhus Dithering No.9 with just the 8 binary colours, and is apparently the worlds best dithering. The picture is of me. (Put here 2010.06.05)

SubLCD A method for doubling the resolution horizontally on LCD screens and similar. Nice for headsets. It is simple, good, elegant, and not patented.

I used to fly: This is also me, flying a hangglider, which is dangerous, difficult, but most of all, a lot of bother, since 70% of trips are flightless, and 80% of flights are just glides to the ground, and there are a lot of elitist pressure from the organization. But the few hours high in the air are fantastic, but not enough to make up for all the bother, if it wasn't for the fact that I like going on tours with my car and view beautiful landscapes. So I sold my wing after flying for 7 years.

Spectrogram: This is a spectrogram of me first whispering "aaaiii" and then saying it normally, and then with higher pitches. It is a sharper variant of my thesis of 1993. The time axis is horizontal to the right, about 10 seconds, and the vertical axis is the pitch, which is 9KHz at the top. (Put here 2006-11-4)

My Sun Valve I invented this Sun Valve, which are panels that can switch between being transparent and retroreflective, and are easy to make and cheap to produce. They can also be used for solar heating and cooling, as well as heat isolation. It was my entry for Googles Project 10¹°° competition, sent as a 30 second YouTube video. This longer YouTube video explains it better.

Light solar sail. Unpatented and about 100 times lighter. Put here 2008.4.18.

Statistical Othello (web GUI) It works by statistical and probabilistic methods. It uses statistics from billions of games to estimate a model, and the model to estimate the best move. The program calculates all 64 squares in parallell, using bit boards. Put here 2006-03-29. It has become much stronger since then. 2010-07-12: Under reconstruction, as it is now using the new minimax method I invented in my sabbatical. Extremely promising. When the math one needs no longer can be found in books or on the net, yet is relatively straight forward, it is a sign that one is in unplowed land, mathematically.

Absence of evidence is evidence of absence. A proof that the lack of evidence for a claim is evidence that the claim is false. Version of 2007-04-14 There is also an older version from an old Usenet article, also in Norwegian, from 2004-8-17.

Code fixing. Correcting human errors and similar in codes.

Pentaput This is a single stroke writing method for phones, PDAs, notepads, etc. Every characher is just one straight line to draw, and it is very tolerant of drawing errors. The image should be extra sharp when viewed on a typical LCD. (Available on the iphone as of 2010-04. Put here 2006-03-29) Blog is here. User guide is here.

Why sequential is good. When complex systems are simplified, they get sequential. So one might as well admit that sequential programs, datastructures, and similar are best. A good argument for avoiding overdone object orienting, call-backs, etc. Put here 2007-06-03

Optimal 256 colour palette. A description of my optimal general 8 bit palette. Put here 2002.1.18.

Xinerama: This is me, and my 6 monitor screen, which worked in Linux, FreeBSD and WindowsMe. I finally threw them away, since they used so much current that they often blew the house fuses and aborted the server. I considered replacing them with 6 LCD screens. ( Thrown away 2007-8-29 )

Hewlett Packard A1097C monitor. How to make this nice 19'' monosync monitor work. And yes, I had 3 of them in the picture above. Put here 2001.10.26.

Selection. A very simple demonstration of how the impossible can be achieved through Evolution. (Put here 2004.7.14.)

Thesis. This is my graduate master thesis. It's about analyzing sound spectrally and cheaply.

Logging of difficult USB How I managed to sniff a difficult old USB device which only worked in old Windows-98, with the help of virtualization under Linux. (Put here 2009.2.16)

(Put here 2009.11.17)
Update 2009.12.17:
Fedora 12 seems to work fine.

"The end of time" by Julian Barbour. Criticized by me. Put here 2002.3.26.

Linux microscope. How I managed to get the "Intel Play QX3 USB" microscope to work under Linux. Put here 2002.6.11.

Spheres on spheres. Old project, but put here 2001.3.14. Enjoy!

Old projects. Things that I did, and were willing to exhibit on the net.

I used to read Scientific American, but now prefer a real scientific magazine, Science. I can recommend Discover for the more popularized stuff.

Email address:
kim.oyhus@gmail.com

Phone: +47 9001 4425

Snailmail address:

Kim Øyhus
Odvar Solbergs vei 90, L.8013
N-0970 Oslo
Norway

"Perhaps seven small black spaceships can become one big white one? -
Perhaps I would like something to drink? -
Yes, that seems more likely."

It's not the strongest nor most intelligent of the species that survive; it is the one most adaptable to change.

The price of reliability is the pursuit of the utmost simplicity. It is a price which the very rich find most hard to pay."

Very simple ideas lie within the reach only of complex minds.
Thinking is hard work. One can't bear burdens and ideas at the same time.

True dissent doesn't feel like going to school wearing black;
it feels like going to school wearing a clown suit.

Supposedly smart people are weirdly ignorant of Bayes Rule.

"Source code has only 2 purposes: Being understandable by humans, and by machines."

"Guardian syndrome morality does not allow innovation except by elite leaders."

"I have a personal relationship with Reality."

"Every single day I see code where people obsess over the wrong thing. They'll spend all their energy on making some crazy over-designed type hierarchy work or on fitting into some methodology or they throw themselves at the mercy of some framework they think will magically fix the fact that they have no idea what the code really does."

"But I've never seen the Icarus story as a lesson about the limitations of humans. I see it as a lesson about the limitations of wax as an adhesive."