Difference between revisions of "Talk:Beaglebone Spectrum Analyzer"

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(Created page with "== Logbook == === 2013.01.23 === Decided to take a stab at making a quick-hack mockup of a spectrum analyzer using a Beaglebone and and rtlsdr DVB-T dongle. Must be ready by Sa...")
 
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Used the spectrum analyzer mock-up for demo during my SDR talk at the 2013 Danish winter VHF meeting. It was very well received and people were very interested. There has also been a lot of positive reaction on Twitter.
 
Used the spectrum analyzer mock-up for demo during my SDR talk at the 2013 Danish winter VHF meeting. It was very well received and people were very interested. There has also been a lot of positive reaction on Twitter.
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Trying to build a custom image based on cloud9-gfx-image.bb and cloud9-image.bb.

Revision as of 23:02, 26 January 2013

Logbook

2013.01.23

Decided to take a stab at making a quick-hack mockup of a spectrum analyzer using a Beaglebone and and rtlsdr DVB-T dongle. Must be ready by Saturday morning for a presentation I am giving at the 2013 Danish Winter VHF meeting.

To begin with I will be using the default Beaglebone demo image available from the download site, namely Angstrom-Cloud9-IDE-GNOME-eglibc-ipk-v2012.05-beaglebone-2012.11.22.img.xz. The application software will be built using:

  • librtlsdr
  • kiss_fft
  • Gtk+ for a simple GUI

2013.01.25

The spectrum analyzer is working, see photo.

Som info and benchmarks for this completely unoptimized image:

  • Automatically starts the application on boot.
  • Startup time is somewhere around 2 minutes (from power on till application is running).
  • CPU load is around 30% when doing 20 frames per second.

2013.01.26

Used the spectrum analyzer mock-up for demo during my SDR talk at the 2013 Danish winter VHF meeting. It was very well received and people were very interested. There has also been a lot of positive reaction on Twitter.

Trying to build a custom image based on cloud9-gfx-image.bb and cloud9-image.bb.