Monthly Archives: November 2007

ATMEGA USB 11

There are lots of “rainbow LED” projects in the internet. So, I decided to place something similar in my weblog. There are 4 hardware PWM outputs in ATMEGA16. So do not need to build fancy software routines to make pulse … Continue reading

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ATMEGA USB 009

Blog entry 008 is not working… so here is 009 I installed electronic lock with Dallas (Maxim) i-Button chips. It was very simple, low security version of electronic lock as it uses DS1990A chips as the keys. Original lock was … Continue reading

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Dolby digital in cinema

Some time ago, I tore a piece of cinema film from local cinema theatre. The movie was some dark work, about vampires or something. Recently, in wikipedia I found article about Dolby digital encoding on the film tape. I found … Continue reading

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HDTV

HDTV, hdtv… whattheheck is that HDTV? Here is some screenshots to describe the size of unscaled HTDV image. You don’t need to know about pixels and lines, do not need to describe difference between 720p and 1080i… Just look to … Continue reading

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Attenuator

Oh, it is great treasure. I’ve made sweep generator, but I didn’t build any attenuation device for it. I’ve tested regular carbon variable resistor, but the output was too noisy. I’ve also tested high resistance wire wound variable resistor, but … Continue reading

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ATMEGA USB 007

I’ve already mentioned that I have small problems compiling Windows executable from source code. It is maybe my compiler’s problems. Maybe it is some strange version build or bad crack . I was using Borlan Delphi Professional, Second Edition v7.2, … Continue reading

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23 inch screen

I’ve tested 23″ Apple Full HD wide cinema monitor. The difference in size compared to standard 17″ LCD monitor is not very big because width and height (aspect) ratio is different. For standard, old, LCD it is 4:3, while Apple … Continue reading

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Cool resistors

I found very cool resistors in old equipment. They are very nice design. The values are almost unusable in our days, especially in hobbyist works, but resistors are very nice. Resistors are inside glass tubes. The resistance is very big- … Continue reading

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