Remote: Remote, hybrid, on-site, depending on distance

Willing to relocate: No

Skills: Bare metal, Bootloaders, Cryptography, Embedded, Debugging, Distributed, Event driven, Firmware, Fullstack (frontend leaning towards backend), Hacking, High performance, Image processing, Optimizing, Pattern recognizing, Porting, Protocol analysers, Real-time, Research, Reverse engineering, Schematics, Troubleshooting, Thinking outside the box

Technologies: AJAX, API, Arm, Assembler, AWS, C/C++, CSS, Eagle, HAL, HTML5, HTTP, Javascript, Joomla(+internals), JSON, JTAG, Linux(+internals), MicroChip, MPI, MySQL, Node.js, PHP, REST, RTOS, Spidermonkey(+internals), SSL, StarCluster, SGE (Sun Grid Engine), TCP/IP(+internals). WebWorkers, X11, XML, Zend(+Internals)

Résumé/CV: Available upon request

Email: xyzzy at rockingship dot org

30 years in the tech industry with 9 years of education specializing in software and hardware as embedded and full-stack engineer.

https://xyzzy.github.io/jsFlightSim

I tried to reverse-engineer the code to understand how the model in the simulator worked, only it raised more questions than answered. I did uncover that the author had flight simulator writing experience, so the mechanics were truly obfuscated. Carl, amazing piece of craftsmanship, tipping the hat!

  Location: Leiden, Netherlands
  Remote: Yes
  Willing to relocate: Possibly
  Technologies: Full-stack, embedded, javascript/c/c++, linux
  Résumé/CV: On request
  Email: xyzzy@rockingship.org

I upgraded the site generator to create even better visual QR codes, it now even can produce a QR in a QR. Enter the gift code "WELCOME" and use it for FREE.

Seeing many application areas for (near) photo realistic QR codes I thought I could invest full-time into it and make it sustainable. I was hoping it would have an organic attraction and build a user-base. After 28 days being online Google Search congratulated me that it was clicked 15 times at average position 60. How does that compare? My visitor count is on average less than 1 per day.

How do I get more people or businesses interested. Does this technology have opportunity to continue investing in? Where should I focus on? Or, is the industry shifting away from QRs, making it wiser for me to focus on other ventures?

Comments URL: https://news.ycombinator.com/item?id=40762407

Points: 3

# Comments: 1

  Location: Netherlands, Leiden
  Remote: Yes, 
  Willing to relocate: Temporary yes, Permanent no
  Technologies: Linux, Javascript, C/C++, HTML/Canvas, PHP, MySQL, Embedded
  Résumé/CV: Upon request
  Email: xyzzy AT rockingship.org

Started with creating multi-tasking basic for Apple2 in 70ies, developed Multi-player games on TOPS20 in 80ies, Inspired by Inmos transputer, worked on operating systems, designed kernel debugger and implemented TCP/IP in 90ies. Designed Raspberry-Pi/Arduino like system in Taiwan in 00ies, life work: fractal logic, capturing essence of information in fractals, calculating with fractal structures in 10ies, 2D-scanline/paintbrush video encoder in 20ies. Recent projects: UWB indoor positioning system using DWM1000, Upgraded qrpicture.com for HD visual QR codes, Apache fail2ban module.

Showcases: https://xyzzy.github.io/ (personal), https://rockingship.github.io/ (fractal related)

   Because it's simply available as an option. National Geographic is licensed and marketed differently in Korea, so it's just sold as a regular brand in normal retail outlets. It's not really necessary to reach for sociological explanations when it's just random gear you pick up at eMart that happens to have the NG brand. See also brands like Jeep, Ttoma, Discovery Expedition, etc.

Comments URL: https://news.ycombinator.com/item?id=37203848

Points: 41

# Comments: 27

   char*p,*q,*r,s[50000];int i,j,k,l;main(){for(r=s,i=10000;i--;r++)for(j=i+3211,k=4;k--;*r++=48+j%10,j/=10);for(;puts((k=r-s)?q=r-5:"?"),k&&k-5;)for (scanf("%d",&k),p=s;p-r;){for(i=j=0;j-16;p[j%4]|=l=!(p[j%4]-q[j/4])?i++,64:0,j|=l/17,j++);for(j=0;j-5;i+=!((*p++&=63)-q[j++])*9);for(;k-i+9&&j--;*--p=*--r);}}

These are two different projects with different design goals and challenges. Tom's built a compiler around it, I created a bootloader that consists of only MUL and XOR.

I don't understand why I feel that I have to defend myself, I thought hackers love these kind of projects, yet it seems I got cancelled.

A true innovation would be to combine both projects. One that inputs source code plus an image and outputs ASCII art that runs like a program.

Editted: What you reference to is a compiler and something completely different.

This has been a niche programming challenge which was popular before I knew it existed, so I upped the ante by using alpha-numeric only.

The usable opcodes where practically IMUL and XOR with severe limitation on registers and offset. But with them I managed to create a random number generator that magically outputs fragments of codes at the location where the next instruction would be located. This would snowball adding more opcodes/functionality as it unrolls into a complete application.

It felt like the instruction set was so restricting and that the designers of the instruction set deliberately mapped the most critical instruction to make this possible to the opcode values. This has made me wonder what the considerations were to select which binary byte value to match with the instructions. if MUL/XOR were mapped differently, this project most likely would not have existed.

Synchronicity in overdrive:

  https://xyzzy.github.io/smile/README.html

  for (int i=max-1; i >= 0; --i) 

  for (unsigned i=max; i--; )

Inspiration: The fractal zoomer rendering engine of my other project [https://rockingship.github.io/jsFractalZoom] wondering how it would be with real-world imagery instead of procedural generated content, and how I believe my brain perceives movement: you pay attention first to areas with heavy contrast changes because they are most likely caused by moving things.

Explanation by example:

STARSHIPS:

14 second clip with high contrasts and lots of movement in different directions. Top video show frames from the a 1212x510 input source and rendered top-left zig-zag to bottom-right. Each frame contains 618120 pixels, Splash takes 618120 self-chosen pixels spread over 6 frames and paints them in the bottom video. Top and bottom both have identical pixel data rates.

[https://rockingship.github.io/splash-media/starships/starshi...]

GTA:

Lets explore the extremes by assuming there is data corruption and only the first 1% of the frame was recoverable. Left is Splash and what it’s continuous paintbrush rendered. Right would be the traditional first 9 scanlines of the input making if effectively unrecoverable. To give traditional at least a fighting chance, the frame is downscaled 100 times to 90x50 and upscaled again to original 900x506.

[https://rockingship.github.io/splash-media/gta/gta-sbs-1800x...]

FFMPEG:

The project includes a patch for ffmpeg [https://rockingship.github.io/splash/20230313-splash_codec.p...].

Comments URL: https://news.ycombinator.com/item?id=35212227

Points: 2

# Comments: 1

Loading any framework script not hosted on the site the app originates is the same kind of leak as the facebook pixel. jquery gets my IP, access time and referrer. They can cross-site track me over all pages that load their scripts.

I also use frameworks scripts, only I host them locally to counter this kind of leakage.

I have an aquarium and I use a water quality tester when I suspect something is wrong. Before it was a colour stripe you have to compare with a reference printed on a package. Now it uses a camera and matches the color better for a better analysis. However, that app calls home directly to JBL, so they are building a profile on how I abuse my fish because every time it logs, it logs a bad situation. It also leaks the usage to jquery, google and crashlytics without notifying me or asking my consent.

Ended with Mate/Xfe, both with amazing and consistent font support. Redshift for time dependent colour temperature is also worth mentioning.