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  1. PCXT

    Open... and close... and open...

    Wow, that's a very good news. There will be plenty of RAM in Pyra. If it fails prematurely, it may be caused not by defective cable, but strains induced by closing and non-uniform twisting the cable back. I've seen it in some laptops. The test for this phenomenon is usually open, then close...
  2. PCXT

    Malware insertion into DNA

    In 2007 I made an YVON spectrometer (machine used to analyze composition of fuel) result file to make the machine indicate "MV_MOTHERINLAW" component in all next tests. It was possible by making two passes of analysis totally different to the way that integration array started to write back into...
  3. PCXT

    A journey of self discovery (Latest Artwork and progress)

    Personally I think that it's better to learn drawing with computer and tablet and try with pencil after it than in reverse direction. You'll get anything possible to see in Krita faster than in pencil drawing. Another story: Some time ago I bought an Intuos tablet... to try with CAD. And I...
  4. PCXT

    Share your projects

    Testing a prototype of IC test tool: This is an Arduino-based IC tester. Initially, I made it only for testing DRAM (I have a separate module with converter giving voltages for 4116), but I found that testing 4116, 4164, 41256, their 4-bit versions and 21010 takes only about 17-20% of code...
  5. PCXT

    Anybody have experience repairing a laptop's charging port?

    For desoldering, use copper mesh band for SMD (McGyver's method: copper wire shield of coax cable dipped in rosin) or cheapest heated spring pump if you do Through-hole. About these nasty power sockets - if there is only power and ground, you are limited to whatever fits in there. I don't know...
  6. PCXT

    A journey of self discovery (Latest Artwork and progress)

    For some unknown reason the finishing of these pictures (hidden versions) is more interesting for me.
  7. PCXT

    Pyra without decent web browser?

    Digging the topic again. Recently YT hidden their Flash version in another place again and I found that for smooth playing of HTML5 video in 720px resolution, two 64-bit cores of my AMD CPU (old Turion at 2.2GHz) are burning in 100% usage. 360px videos eat about 75%. Would Pyra's SoC be able to...
  8. PCXT

    Sensors in the Pyra

    The thing is very, very simple, as I remember: 1. There is a 6F22 battery with ground on LX's serial port GND. 2. There is a transistor-based switch to switch battery on, switching the sensor on. It is driven by LX. 3. Converter based on MC34063, STP6NK60Z MOSFET, UF4007, gives 400V. Warning...
  9. PCXT

    Sensors in the Pyra

    Sensors can be used, but IMHO additional ones as external adapters. This is dictated purely as fault prevention, they like to fail and it'll be easier to replace external adapter than internal parts. I designed Geiger counter plug-in for HP LX, unfortunately never built as after radiation...
  10. PCXT

    News from the Front

    The idea of copyright is faulty and became faulty quickly after it became introduced. Damaging its foundation ideas was totally controlled process, with main objective to make monetary gains for one group by the cost of other (in USA) or control monopoly of sharing knowledge/books (in Europe)...
  11. PCXT

    A journey of self discovery (Latest Artwork and progress)

    Good luck with programming! Sometimes I make programs just for joy of observing their effects. So if you don't have much to program and you like creativity, you can make programs which try to make art! Recently, I made an automata which generates 2D maps of landscapes. About 1,5 hour of C++...
  12. PCXT

    News from the Front

    The truth is that in most countries the law is totally unprepared for the Internet and mass processing of sensitive data. We have it for 30 years and we're using similar rules that about telephones and cardfiles. The problem is that companies in fact want to make the Internet a second...
  13. PCXT

    A journey of self discovery (Latest Artwork and progress)

    Wow, these look really good. I also think that animations are good approach, maybe focusing on incorporating some vectors which may make doing animation a bit less laborious. About the last... I hope they're not from these memories of XIX century :). (I can't draw anything except schematics...
  14. PCXT

    Keep cool!

    During my adventures with Linux, I found PulseAudio problematic in one case: Configurability. Command-line tools don't list all options when they should, and sound output is usually set to wrong (at least in Dells). Nice configuration offered by pavucontrol is incomprehensible (I have to check...
  15. PCXT

    Video Games in the Future!

    Today the general rule is that sales increase with popularity no matter how stupid the product is, it only needs to be pushed into sufficient amount of media. Consumer behavior determination works more to minimize effort to create another "product". The thing worth thinking is why the hell...
  16. PCXT

    Test the keymat!

    Because the techniques are different. In my case, years of using laptop in dark environments, I found that I never look for the jack using plug - I find connectors by touch first, then plug the cable to the one closest to the front (Asus, dell) or edge (old Toshiba). So, if there will be one...
  17. PCXT

    Oooh, this is interesting (low-power radio tech)

    ...and we need to get through all interferences in this spectrum. But we don't need big power all time, maybe super/capacitors are extensively used in such moments? //EDIT Looking into paper, they don't use DAC at all, base station sends analog audio and this receives. Something like an old...
  18. PCXT

    Oooh, this is interesting (low-power radio tech)

    This is rather like ambient power converters, not only with GSM, but it converts, with different efficiencies, lower frequency radio or even power interference. I've built a few ambient power units myself for experimenting. The best ones (which are made around Ge diodes, not Si), allowed me to...
  19. PCXT

    Tips for saving up money?

    What connection is it? A two-way satellite? I have 4MBit/1MBit for smaller than quarter of that price, but per year and it's perfect for everyday tasks, videos if planned and even remote admin of my workplace machine. You can cut expenses there. Or consider shared line, I don't know about your...
  20. PCXT

    Tips for saving up money?

    About furniture, you can get it really cheap, usually cheaper than groceries if you look on classified ads sites. In typical cities there are some ads about getting rid of old furniture. In academic centers, there are tons of ads from students who have rented rooms and now the owner wants it to...
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