Few words about me:

From very childhood I loved computers, electronics, lasers, sulfuric acid and liquid nitrogen. I always wanted to be making microchips, UAVs and see nuclear explosion.

Now I am doing software engineering and in the spare time - some microelectronics and physics/chemistry experiments.

I live and work in Russia, Moscow.

MSDN Premium

Finally was able to activate my MSDN Premium subscription which I won in photo competition 3.5 years ago:

September 17, 2012

My new microscope & MIFARE die shots

Finally, arrived my microscope from China - BM-158J:

Bright/dark field, reflective/transmissive imaging, DIC, 5mpix camera.

August 19, 2012

100'000 lm "nuclear explosion" light fixture

It is a general belief that IT geek should live in darkness with the only light source being computer monitor. Personally, I always liked bright light, but It was never bright enough. Initially my room was lit by 300W of incandescent lamps (4500 lm), then 250W of CFL (~15000 lm), then 500W halogen (~12500 lm)... But it all was way too weak. I always wanted light to be so bright, that you don't want to make it brighter. Now I achieved this goal and happy to share the results.
May 25, 2012

Upgrade time! LGA2011 FTW

Finally, decided not to wait Ivy Bridge-E: i7-3820, Gigabyte X79-UD5, 8x4Gb Samsung DDR3

February 17, 2012

Upgrading videocard. Using a diamond cutting wheel.

Many of you might have heard anecdotes about people using saws and other tools to plug incompatible cards & modules into PC...

This actually happened to me: recently I needed an PCI-E x1 videocard, as all x16 slots were already occupied. PCI-E x1 cards are being sold but they are rare and quite expensive. I decided to try to upgrade (or better say modify) my spare PCI-E x16 videocard nVidia 8400GS to fit into x1 slot.

There are 2 possible approaches to this problem: remove a "wall" on PCI-E x1 slot on the motherboard so that x16 card fits in, or cut the videocard. As motherboard was still on warranty, I decided to cut the videocard.
June 10, 2011

Building nuclear reactor at home - from scratch

Some time ago I've published article about homemade cpu's, and today we'll be talking about more complex and dangerous things (especially in spite of recent Fukushima accident) – building nuclear reactor at home, which would be able to generate electricity. And before you will start worrying or being skeptical in advance (see Radioactive boyscout) I will say that everything mentioned in this article is more or less safe (at least, as safe as working with Hydrofluoric acid at home), so I strongly recommend anyone to not try this at home. Also, before thinking of doing something – talk to your lawyer – laws are different country-to-country, and many are already in prison
April 1, 2011

Homemade CPU – from scratch

Since 1975 when one need a processor – the only option is to buy one. In the most complex case one might consider going for configurable FPGA processor (like Nios II) with few extra commands, and that's it. Nowadays it is hard to believe that these fancy processors might be obtained some other way than just buying one. It's just like thinking that beef and bread is only made in the local shop.

Why one would need to return to "root" technology? Well, to be sure that we can resurrect the technology if something happens with current Chinese factories and Engeneering centers in few countries and to know in very detail how exactly things works.

It appeared that there are guys who did developed homemade processors as a hobby. They are usually made out of low-scale microchips (registers, counters, e.t.c) or low level discrete elements (transistors, relays). The only big chips used are memory and flash memory.
In this article I want to do a brief on architecture of homemade processors and show some greatest processors made at home.
February 15, 2010

Earth destruction: Meteorite threat assessment

Lately some of internet community was shocked by a missed 7 meter meteorite, which was detected just 15 hours before minimal distance to Earth, and that showed that we are still under risk of going Dinosaur way – have a breakfast, and then suddenly die due to meteorite impact
Some might say "Hey, this 7 meter meteorite is so tiny to cause any damage". I am not going just believe that, let's find out by ourselves!

I'll show you that meteorite damage assessment is not something available for eggheads only: you might find all required information and tools for that in the internet, and I'll show you how :-)

The only thing you should remember from School physics course is that every moving body have kinetic energy, and whatever you do with that body – amount of energy is preserved. I.e. when meteorite hit the Earth – this energy gets converted to heat of explosion and shock-wave.
November 18, 2009

Using Atom 330 with server applications

Recently I've tried to bring some attention to Atom-based servers for private web-hosting. There were many skeptical about this idea: "How can cheap netbook processor work in a server?". Now some companies provide collocation for atom-based nettops for a reduced price (~30$, usual price for 1U server is around 100$), and I wanted to share my experiences after using such server for a month.

Server configuration: Acer Aspire Revo 3600 on nVidia Ion platform, Intel Atom 330 (2 physical cores, 64-bit), 4Gb DDR2-800 RAM (Ubuntu 64 managed to see just 3.2Gb, looks like BIOS issue), SSD OCZ Vertex 30Gb. I had several SSD optimizations applied: noatime mount, disabled access-logs, disabled swap – all this to extend drive life, but this is a topic for a separate article. BTW, during first month of usage I’ve spent around 0.5% of the drive resource.
October 2, 2009