Category Archives: Audio and Video

DIY filter adapter for a camera lens without filter thread

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

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

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

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

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

Posted in Audio and Video, DIY, For Fun or Interest, Hobbies and Other Interests, Security Standardization and Practises, Security Training, Awareness and Reports, Tests, Tools | Comments Off

Free vector graphics and icons by freepik

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

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

Posted in Anvanced Tools, Audio and Video, For Fun or Interest, Gadgets, Hobbies and Other Interests, Innovation and new tech, Raspberry Pi, Robotics, Tests | Comments Off