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.

DIN modules and busbar soldering

Before: DIN circuit breakers were connected in soviet-electrician-style "it did the best with the stuff I had", consecutive using usual wire. Effectively all current goes through point contacts on first module. These places are the main reliability and safety concern - it could easily overheat and cause a fire. For example on the right see similar setup under 4.25kW power consumption (20А) via thermal imaging camera.
April 25, 2015

Amateur astronomy starts now!

For quite some time I wanted to buy a telescope - but it was nowhere to store it in rented apartment. Here is my previous attempt. Finally this time has come - I ordered Sky-Watcher 10" DOB SynScan from famous German shop http://telescope-express.com. Even with delivery and customs taxes it was cheaper than in local stores. 10" was selected as largest diameter which could still be used at balcony.

April 22, 2015

Switzerland 2014

In the summer of 2014 i've been on business trip to Switzerland. Finally got some time to share few photos.

The most iconic one is probably the cows eating grass in Alps, 2000 meters above the sea level:
April 17, 2015

Solar eclipse 2015

Today there was 65% solar eclipse in Moscow. Probably the last time I am taking astronomy photos with Sony 500mm/F8 - my new telescope is already at the post office
March 20, 2015

AMOLED shenanigans and new microscope lens Olympus LUCPlanFl 20x/0.45

Finally managed to break smart phone glass for the first time. FIrst 4 times it was hitting concrete just fine, and now it landed straight face-down: screen was shattered. Bought glass replacement kit on ebay including UV-curing glue. Old glue+glass is removed by heating to ~120-150 °C.

Unfortunately I managed to overheat 1 spot to 220 °C which lead to unexpected effect: black (organic?) contrast-boosting pigment has burned and revealed display internals in more details. Also, the most sensitive, blue subpixels stopped working in this spot. With my "new" (ebay again) microscope lens LUCPlanFl 20x/0.45 with cover glass thickness correction I managed to make photo of AMOLED internals with more details (for comparison see earlier photos):
March 20, 2015

My precious... ADC

Received few interesting chips from ebay for experiments and decapsulation...
Finally can play with fast ADC (16-bit 10MSPS, 14-bit 190 and 400MSPS), DAC.
It's hard to run ADS5474 at 400MSPS for fun, so it goes straight to acid

But with EPM7128 I made a mistake : I recalled that MAX7000 is the last Altera CPLD with 5V IO. But these specific chips appeared to be 3.3V ones (postfix A-3.3V, B-2.5B. 5V ones has postfix S or none)
 
February 18, 2015

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