Rotate your wheels

Skating gives a lot of fun. When mastered enough, it is like flying few centimeters over the pavements. To make this feeling persistent, I am going to tell you my secrets of perfect wheels’ rolling. I was inspired by the rain that catched me recently while I was riding through the city, covering my boots with wet sand and mud. I am also inspired by situations I recall, when you could hear a skater, who was making whooshing and squealing sounds, before spotting him/her. Finally, because couple days ago friend of mine was puzzled when asked about wheels rotation. Continue reading

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Hello AVR world!

Years ago I have been in electronics world, while never seriously touched digital techniques. I dropped electronics in favour of computer science and become sofware specialist. Now getting back to electronics I see the power in programming integrated circuit to control fixed electronics assembly around. I am really attracted by microcontrollers. Continue reading

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Rigol DS1052E silenced

If you are into electronics you probably know this very popular digital oscilloscope for amateurs. You might hear about its very annoying affliction: noisy stock fan. You need 5 euro and 20 minutes to make this device virtually soundless. Continue reading

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Grounded by Eyjafjallajökull

At night before my travel back home, I have watched the report on Iceland volcano eruption. It was mid of April 2010 and I was nearly 1000km from home, in Romania. I deluded myself the ash cloud will neither get to Romania nor to Germany, my connection point. I hope I would be able to fly back next day early afternoon. Vain hope. Continue reading

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In Moscow like in hell

July 2010 was nervous in Moscow. Hundreds of square kilometers of Russian greenfields and forests were burning around the capitol in uncontrolled way. And I had to be there in business trip. Continue reading

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WordPress glitches with lighttpd on OpenWRT

When I started playing with wordpress as another service on my tiny server box I integrated it with basic OpenWRT webserver, the uhttpd. To leverage from pretty permalinks, secure administration, or to prevent from images hotlinking I decided to migrate to more advanced HTTP sever. My choice was either Apache webserver or lighttpd. With limited memory on router box obvious choice was the latter.

With many guidelines online migration was quite easy. Homepage was running properly, except for administrative dashboard, which was complety blocking wordpress for couple minutes. I opened resource monitor and found that memory consumption crossed easily 64MB of RAM and was asking for swap more and more. When 130MB of swap was allocated I decided to kill puffed up PHP processes.
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Casablanca in January

My job requires travelling from time to time, usually in Europe. Sometimes however I am assigned to tasks in more exotic places. In January I spent a week in Casablanca, Morocco. It was not vacation and every day was fully booked, but managing my time smart, I coult try to see more than hotel and office – here you find my short report. Continue reading

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USB mod for TL-WR1043ND

This gallery contains 17 photos.

Encouraged by successful RAM modification I started consider extension of USB ports number in TP-Link device. Originally it contains only one USB2.0 port and if you are using extroot (file system on external storage), you effectively have no free USB … Continue reading

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64MB RAM mod for TL-WR1043ND

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When I read about hardware modifications of unextendable home-targetted routers, I thought, nerds! On the other hand, doubling RAM memory size for pennies, is attractive perspective for anyone, who plans switch firmware to embedded linux and host services far beyond … Continue reading

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Rules engine in energy sector

At the end of last year I wrote an article about Business Rules Management System for Energy and Utilities magazine, publishing by one of ISVs in energy sector in Poland. Honestly speaking, I almost forgot about that until today, when googling for “rules engine” in Poland I found PDF version of article. Continue reading

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