Category Archives: Tests

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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OpenStack concepts via Ubuntu Cloud Live in VirtualBox

Posted on 2 March 2014 by Admin

Ubuntu Cloud Live image is mentioned at Ubuntu’s site and instructions are given on how to boot the system from USB. This image is nowadays a little outdated (based on Essex release). For more serious experiments, please use more up-to-date … Continue reading →

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SCENECT with Kinect, Tools for capturing house layouts in 3D

Posted on 31 July 2013 by Admin

SCENECT is a free tool from FARO to capture 3D point cloud of objects and environments. There are several other tools for the similar 3D capture, and the choice depends on the goals. In this case the main goal is … Continue reading →

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Using ImageMagick to reveal existence of hidden steganographic messages with DIY IM-simpleGUI tool

Posted on 24 February 2013 by Admin

Tools used ImageMagick is a powerfull CLI tool for image processing. For different commands, see their www pages. The following commands are used in this blog: compare convert montage In addition ImageMagick contains image filters like Laplacian (IM, wikipedia), Sobel … Continue reading →

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DIY Spectrometer, and notes on online Spectral Workbench

Posted on 6 February 2013 by Admin

There exist several variations of DIY spectrometer by using CD or DVD as the main component (ie. generating the rainbow of colors by diffraction from the optical disk grooves). The output is a spectra, light intensity versus wavelength. In Wikipedia: … Continue reading →

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Test: portable VirtualBox with xubuntu linux

Posted on 1 October 2012 by Admin

VirtualBox is well known tool for running guest OS inside host OS. A portable version is called Portable-VirtualBox, and it can be runned without installation (but requires admin rights). From virtualbox site: VirtualBox is a powerful x86 and AMD64/Intel64 virtualization … Continue reading →

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Test: android device connection to ad-hoc wifi

Posted on 1 January 2012 by Admin

Introduction Android tablets, like Creative Ziio, support wireless connection to WIFI access points, but not to ad-hoc networks. However, with other portable devices like laptops and mobile phones, it might not be possible setup an access point, but an ad-hoc … Continue reading →

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