Category Archives: Audio and Video

DIY filter adapter for a camera lens without filter thread

Posted on 19 August 2018 by Admin

Some camera lenses like Zenitar 16mm (F2.8) do not have a commonly used filter thread at the front of the lens. However, it is possible to make your own adapter. An easy non-destructive way is to used filter adapter rings … Continue reading →

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Virtual magnifiying glass

Posted on 11 February 2018 by Admin

One of the handy tools to have is virtual magnifying glass. It can be a solution when one need to enlarge only a portion of the display. For example, if you want to show some video or demo on a … Continue reading →

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Test, DIY tuning a piano key

Posted on 27 September 2017 by Admin

I promised to “have a look” on a piano that did not sound “right” any longer; not for some time. A piano tuning professional had said that he does not know any piano with this name. After opening the piano, … Continue reading →

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Reusing motorcycle intercom headset with android phone

Posted on 15 September 2016 by Admin

This is about reusing an old wire based motorcycle intercom headset with android mobile. With intercom app in android, and with bluetooth, it is possible to use it for intercom between android phones, or even use it for phone calls. … Continue reading →

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Test: ONVIF IP Camera

Posted on 15 August 2016 by Admin

ONVIF is recent standard for security IP cameras. Due to the standard, it should be easier to integrate these cameras into a surveillance solution. From ONVIF site: The ONVIF specification defines a common protocol for the exchange of information between … Continue reading →

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Free vector graphics and icons by freepik

Posted on 28 July 2015 by Admin

Freepik has made several vector graphics and icons available. Worth to take a look. Their icons are available also at flaticon. In this blog, I try to make a short story by using freepik icons. Please note that, icons are … Continue reading →

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Raspberry Pi camera and telescope, first tests

Posted on 30 December 2014 by Admin

I got B+ model of the Raspberry Pi as christmas gift. Then I saw the size of the camera module, and I just had to go and buy one. I have been testing different webcam and digital camera setups with … Continue reading →

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