Application for easy reading of past and forecasted geomagnetic Kp index.



Race track lap time of electric vehicles. Timing one lap of driving on the Nürburgring Nordschleife provides a good measure of car performance, including acceleration, top speed, cornering and general handling. The article lists lap times for electric vehicles.


Article about how to name files when handling large collection of photo and video files. It is important to use a naming that makes to organise and re-find a media file among 1000s of files. Also useful for naming project documents that can undergo multiple revisions.


The article “Create PDF Forms with OpenOffice” has moved to and example files and text have been updated to use OpenOffice 4.1.2.


Due to an error at our DNS registrar, the access to this site through address is currently not possible. Until the problem is resolved please access the full site through address <>.

2015-03-25 Update; the problem has been resolved and <> address is accessible again.

The C-DVR is small video recorder that takes composite video as input, digitze the video and store on a MicroSDHC card.


Product review

At FASE Micro-Copter, a Dictionary with explanation of words and technical terms used for UAS flight.


World coordinates

To navigate the globe and pin-point your position in the world one uses a coordinate system. There exists several coordinate systems for mapping the globe, but the most common is WGS84 latitude and longitude coordinates.

How to use latitude and longitude coordinates.


There are many types of rechargeable batteries: NiCd, NiMH, Pb, Li-Ion, LiPo etc.. Each type have their own characteristics and are suited for different purposes.

This article explains about power, energy, wear and care of NiMH and LiPo batteries.

Rechargeable Batteries


Speed testing flash memory and hard disks

Storage size is not the only important factor for flash memory and disk drives. Data transfer speed is very important for efficient use of the drive.

When testing data transfer speed it is important to use a method that is actual testing the storage device and not just Operating system cache or RAM buffers on the device. Only this way can the true sustained transfer speed be measured.

Sustained transfer speed can most easily be tested with H2testw application.

In the article a selection of SD cards (Secure Digital), CF cards (Compact Flash), USB sticks, SSD (Solid State Disk) and magnetic hard disks are tested. It is not an exhaustive test of all available flash memory or hard disks, merely a tiny subset.

Drive Speed