Author Archives: Administrator

About Administrator

I am owner of this site.

Surface tension effects in SMD soldering

Posted on June 13, 2015 by Administrator

I had very short time to remove some Atmel (AT90SL2343T) chips from discarder NOKIA communication equipment boards using standard hot air gun. It was very high quality PCB boards so I made some experiments about self positioning of some SMD … Continue reading →

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Games of Short Waves

Posted on April 25, 2015 by Administrator

From young years I was interested in showwave (HAM) radio, but due to economical and political situation I never started (you know, the axis of evil- soviet union and etc.) Later I managed to listen some of the HAM radio … Continue reading →

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Answer to the riddle

Posted on April 12, 2015 by Administrator

It is RGB LED matrix board! It is some PCB from Adaptive Micro Systems LLC, USA. This comapny specializes in LED advert production. From simple single color static board to full RGB color outdoor monitor. Mine LED board is 72 … Continue reading →

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Riddle

Posted on April 6, 2015 by Administrator

This is starting post about very interesting project. Try to guess what it is? This PCB is populated with serious stuff. Big square chip is Altera Cyclone EP1C6T144C8, 30 pcs of MBI5026CD, 8 pcs of HT04 (standard chips), 24 Fairchild … Continue reading →

Posted in Anything, FPGA, LED | 1 Comment

Mother China or USD rate fluctuation

Posted on April 6, 2015 by Administrator

When this post was posted, it was 2008 May. The exchange rate for USD was quite low compared to our local currency. Today (2015) we do not have local currency- we joined eurozone. And exchange rate for USD is quite … Continue reading →

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Collimator

Posted on April 4, 2015 by Administrator

For my laser experiment I am using collimators from old laser printers and copie machines. Especially from copiers. A collimator is a device that narrows a beam of particles or waves. To “narrow” can mean either to cause the directions … Continue reading →

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2D scanner, version 2

Posted on March 31, 2015 by Administrator

The first version of harware had serious problem- big geometrical distortion. So I added additional mirrors to lift laser beam. Also, I moved voice coils as near each other as I can. The finished scanner is much more smaller: I … Continue reading →

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2D laser scanner, part 2

Posted on March 29, 2015 by Administrator

To test laser scanner from older post I am using very old Amiga software Lasermax. The Amiga computer itself is emulated with windows machine. And just for fun, here is some laser beam experiments in lobby. Laser beam from red … Continue reading →

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2D laser scanner- mechanics

Posted on March 27, 2015 by Administrator

This real 2D scanner mechanics for laser beam. Not face ones with small DC motors, but real mirror system to form real image on some screen or fog. All you need some real good laser source (I’ve used burnig red … Continue reading →

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First nixie clock

Posted on March 27, 2015 by Administrator

In 2008 my programming skill was too weak, so I ordered nixie (neon glow tubes) clock kit. I had lots of ИН-12Б tubes in my stock, so I used them as my starting design. Tubes were connected to clock PCB … Continue reading →

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