I’m happy to report that I managed to make my Gumstix Overo Fire boot from the microSD card! After a few failed attempts as I mentioned here, I noticed an error message in the boot sequence:
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Gumstix Overo Fire on a rocket
Few weeks ago I was told about an opportunity to fly something small on an amateur rocket in October, when the guys from Danish Space Challenge will launch a bunch of rockets. I figured it was a good excuse to resume my work with the Gumstix Overo embedded conputer that I have lying around.
Satellite Tooltips
You may have already seen tooltips in the Gpredict user interface. I have made extensive use of them for providing short description of the functionality of the GUI controls all over the application. Lately, I have felt a desire to extend the usage of tooltips to also include graphical objects like satellites shown on the map or the passes shown in the “Sky at a glance” module.
Gpredict uses GooCanvas for graphics, which adds a the “missing” 2D canvas library to Gtk+. Since version 0.15 GooCanvas includes support for Gtk+-like tooltips for any objects on the canvas. This is really great since it simplifies the effort from messing with own popup windows to using single line API calls.
Ubuntu Linux on the Acer Aspire 5745G Laptop
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This article is about running Ubuntu Linux 10.04 on the Acer Aspire 5745G. If you are interested in running Ubuntu 10.10 check this article instead. |
It was time for me to get a new computer and this time I was going for laptop with a fast CPU and sufficient Nvidia graphics that is suitable for video processing and high bandwidth software defined radios. Didn’t want ATI graphics because I have bad experience with ATI and Linux. Nvidia on the other hand has been working very well for me on Linux.
I thought of getting a new Macbook Pro 15″ with and Intel i7 dual core processor, but I ended with the Acer Aspire 5745G-724G50Mn with an i7 quad-core, 4GB RAM and a Geforce GT330M with 1 GB VRAM. The rest of this article describes my first experiences with installing and running Ubuntu Linux 10.04 Lucid Lynx 64 bit on this computer side by side with the pre-installed Windows 7.
A Weekend with GStreamer
This weekend was dedicated to learning and experimenting with Gstreamer – an open source library and framework for constructing audio and video processing pipelines. Despite the weekend being spoiled by lots of bad luck (power outages, Internet down, etc.) I managed to beat the hell out of Murphy and get some work done!
My hidden agenda is of course finding a good audio/video library to accompany a software defined radio created using GNU Radio and the Universal Software Radio Peripheral (USRP), and to eventually be able to transmit real time high definition video over the air. While GNU Radio and the USRP can take care of everything related to software radio and RF, I am still looking for a good framework for flexible audio/video processing.
A Weekend with GStreamer
This weekend was dedicated to learning and experimenting with Gstreamer – an open source library and framework for constructing audio and video processing pipelines. Despite the weekend being spoiled by lots of bad luck (power outages, Internet down, etc.) I managed to beat the hell out of Murphy and get some work done!
My hidden agenda is of course finding a good audio/video library to accompany a software defined radio created using GNU Radio and the Universal Software Radio Peripheral (USRP), and to eventually be able to transmit real time high definition video over the air. While GNU Radio and the USRP can take care of everything related to software radio and RF, I am still looking for a good framework for flexible audio/video processing.
Gpredict on the Eee PC 701
Now that I have Ubuntu 9.04 runnign on my Asus Eee PC 701 it was very easy to get Gpredict up and running. After a few configuration tweaks related to the views it runs and looks very well even on this small 800×480 pixel display! Watch in high resolution. Thus, I have now following hamradio … Read more
Ubuntu 9.04 on the Eee PC 701
It’s been more than a year now that I last posted an update about using my Asus Eee PC 701 for hamradio. To be honest, my Eee PC has been more or less idle ever since. Back in August 2008 I have decided that I need a newer and better OS on it than the Asus/Xandros that it came installed with. I tried a few one every now and then but without any satisfactory results. Until now…
Gpredict in the Linux Journal
. I noticed today January 2010 issue of Linux Journal has amateur radio as it’s main topic. In fact, the whole front page is a big Amateur Radio and Linux headline. There are three articles about amateur and several great ham radio apps for Linux are described in these articles: Fldigi, Xlog, Xastir, Gpredict and … Read more