jeroen.se
by jnieuwen
a bug in my samsung s1060 camera
13 August 2008 12:51 - Yesterday I ran into a bug in my Samsung S1060 digital camera. If you press the view photos button while the red-eye flash pictogram is flashing white and red it hangs and becomes unresponsive.
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upgrade my n810 to the diablo release
26 June 2008 07:14 - Yesterday evening I upgraded my n810 to the new diablo release. I quickly ran into the problem that connection to my wifi accesspoint at home did not work anymore. After some searching I found out that I should not restore the settings from backup of an earlier OS2008, but configure it from scratch.
The second problem I ran into was the availability of repositories for the new release. Most chinook applications should work, but they are not in the diablo repositories. But editing the repository catalogue settings and putting chinook in the distribution field solved this problem.
I still have to find out if the email client has improved enough to make it usable.
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using the gps of the n810 to get cycling statistics
31 March 2008 08:55 - Since a few weeks I have a nokia n810. Mainly because of the ability to login via ssh on servers I manage. This allows me leave my laptop at home when using my recumbent bike, which saves around 1.5 KG of luggage. But it also allows me to save my track and speed info by using the built-in GPS module.
Saving the track in gpx format is quite easy using maemo-mapper. But maemo-mapper does not save the speed information, hence I needed something else. Fortunately the n810 has gpsd running when the gps is in use and also has perl installed. So my problem was reduced to making a perl script that talks to gpsd.
The first script I needed was a script to save all the information from the gpsd daemon. The usage is quite simple. Start maemo-mapper and after that run the perl script. This creates a simple log file.
After returning from your trip you just kill the perl script and copy the logfile to your desktop machine. Then you run the plot script:
speedplot.pl speed.log output.png
And you have a graph of your speed during the ride in png format. The speed is averaged over all the measurements of the last minute, because the speed of a bike is to low to get an accurate speed measurement from just one sample. An example png can be found here.
Taking the n810 with me is quite easy, I put it in my topbag on the back of the bike. In the bag it still can get a gps fix and it is protected against rain. I am still thinking how to mount it on the bike to be able to use it for following a predefined route.
What is a problem though is that I do not get any good altitude samples. I have to look into that to see if I can fix that and be able to make a altitude graph.
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