BarsMonster

Moscow, Russia

3.14.by

Age: 33

Software developer (in love with C++). Hardware geek (FPGA's, STM32, AVR, crazy stuff from discrete components), love LED indicators (7-segment, alphanumeric). Trying to understand ASIC design & manufacturing better at the moment. Also, trying to wrap my head around lens design, but that is not going to be that easy.

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1d
awarded Popular Question
Jan
21
awarded Notable Question
Jan
15
comment PCB and trace design for high-speed TTL
@secretformula Oh, I was so young and optimistic :-) Not even close, stuck in simulation. Hopefully will get it done eventually (in like 5 more years).
Jan
14
awarded Yearling
Jan
8
comment Precise measuring of frequency with high-speed ADC
@pjc50 That implies rubidium frequency standard, which could optionally be fine-tuned to GPS clock. Reference and target clocks are around 10Mhz, which could be further multiplied/divided by PLL's as needed. ADC might be something like 100 MSPS / 14-bit.
Jan
8
comment How do filament LED bulbs work, looking very similar to incandescent bulbs?
Implementing multilayer radial LED structure with today's materials is nearly impossible. GaN-based materials are just waaaay to tricky even for planar substrates.
Jan
8
asked Precise measuring of frequency with high-speed ADC
Jan
5
awarded Popular Question
Jan
5
awarded Notable Question
Jan
4
awarded Popular Question
Dec
11
awarded Notable Question
Dec
11
awarded Popular Question
Dec
7
answered diffraction grating
Dec
4
awarded Popular Question
Nov
25
comment Spectrum of generic $\mathrm{CO_2}$ laser
I only have few ZnSe lenses. So for a rough spectrometer I still need suitable diffraction grating and detector. Regarding the specs - there are nothing else, Chinese manufacturers only care about raw output power, that's it. If it is only one line - that would already answer my question, but I am not sure it supposed to be 1 line without line selection.
Nov
23
comment Spectrum of generic $\mathrm{CO_2}$ laser
This is Chinese glass sealed 40W CO2 laser. Building spectrometer for 10um range might be quite challenging task )
Nov
23
revised Spectrum of generic $\mathrm{CO_2}$ laser
added 64 characters in body
Nov
22
comment Spectrum of generic $\mathrm{CO_2}$ laser
It's a sealed tube - if I put anything at the output I'll loose power. The question is "how broad" could it be? Is it 0.1um wide? 1um wide?
Nov
21
comment Altium: reuse schematic AND pcb layout
But this involve "copying" layout, this means that it will be extremely painful to make any changes afterwards. I am looking for a way to be able to modify all these copies later without huge pain of modifying 100's of copies.
Nov
18
awarded Benefactor
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