The XO Computer for Navigation

[tyrntlzrdking]

cd ~/ && clear
[olpc@xo-0C-D6-40 Terminal.activity]$ cd ~/ && clear
[olpc@xo-0C-D6-40 ~]$ cd ~/.wine/dosdevices
[olpc@xo-0C-D6-40 dosdevices]$ unlink com1
[olpc@xo-0C-D6-40 dosdevices]$ ln -s /dev/ttyUSB0 com1
[olpc@xo-0C-D6-40 dosdevices]$ ls -l &> ls.txt
[olpc@xo-0C-D6-40 dosdevices]$

Was I supposed to receive info?

[phiggins]

yes copy the ls.txt to your /media/OPTIMA by entering:
cp ls.txt /media/OPTIMA

Then post the ls.txt. But try what I said about the UCCP and LOCK too in previous post.

[tyrntlzrdking]

Try this:
cd ~/.wine/dosdevices
unlink com1 (don't worry if it says No such file or directory)
ln -s /dev/ttyUSB0 com1
ls -l &> ls.txt

post ls.txt

I did this twice. Nothing showed up on my USB drive or terminal,

I will now try your other advice.

[tyrntlzrdking]

I am having a hard time navigating in terminal to make the changes you suggested using insert. I screwed up then hit escape. When I opened it up again, the following messag was there.



E325: ATTENTION
Found a swap file by the name "/etc/.group.swp"
owned by: root dated: Tue Apr 22 22:33:44 2008
file name: /etc/group
modified: YES
user name: root host name: xo-0C-D6-40.localdomain
process ID: 2029
While opening file "/etc/group"
dated: Fri Nov 2 08:00:00 2007

(1) Another program may be editing the same file.
If this is the case, be careful not to end up with two
different instances of the same file when making changes.
Quit, or continue with caution.

(2) An edit session for this file crashed.
If this is the case, use ":recover" or "vim -r /etc/group"
to recover the changes (see ":help recovery").
If you did this already, delete the swap file "/etc/.group.swp"
to avoid this message.
"/etc/group" 35L, 468C
Press ENTER or type command to continue

[tyrntlzrdking]

Originally Posted by phiggins

Give your userid access to uucp (group 14) and the lock (group 54) enter:
su -
vi /etc/group
i (insert mode)
change line "uccp::14:uucp" to "uccp::14:uucp,olpc" where olpc is your userid.
change line "lock::54:" to "lock::54lpc" where olpc is your userid.
press esc key (upper left key on keyboard, a circle with an X).
enter: ZZ
reboot

Then try starting SeaClear

Thanks Paul!
Thats what I needed to do. You are a genius.
My GPS working nice with SeaClear on my little XO.

[phiggins]

Great Jeff!

I knew we could do it. I think I might get one of those GPS's, they look rather neat. The old Magellan I bought maybe 10 years ago is getting finicky. I have to beat it to get it to work.

Paul

[Kerry]

Paul or others,
My fear uncertainty and doubt related to starting this install have been compounded by the talk of XP on the XO, the release of Hardy Heron, and, of course, the arrival of actual boat-working and sailing weather. I haven't seen anything definitive on XP but has anyone updated Ubuntu to 8.04 and installed wine/SeaClear as described in this thread? thanks,
Kerry

[scotte]

Hardy Heron shouldn't be any different than Gutsy Gibbon at least as it relates to wine apps and the steps required to install them... And the upgrade from an existing installation is really quite trivial for Ubuntu, though I generally give things a month or two to settle down before I do it on my systems.

[phiggins]

I got the XO working on the boat running Ubuntu and SeaClear under wine. See the attached pictures. Everything seems to work including the AIS (might be hard to see the one target near the bottom of the screen above the word Simulator about 8.5 miles away from my boat.

I was frontending SeaClear with my simulator program which was receiving the GPS from my Furuno Radar/Chartplotter and the AIS from a SR-161 and sending to SeaClear. See the NMEA Connections picture for the complete setup.

The Simulator was also taking the closest AIS targets and converting them to TTM sentences and sending them to the Furuno radar where it displays them as ARPA targets. This gives me pseudo AIS on my old 1722C radar which doesn't have AIS support.

Paul

[Viking Sailor]

Paul,

Congratulations! Very nice configuration. I especially like what you did for redundancy.

I am curious about the performance of the XO. Is it still fairly responsive? Also, can you elaborate a bit on using the "simulator" to send messages to the radar.

Thanks,

Paul

[phiggins]

Viking,

Running Ubuntu on the XO makes it quite responsive. Not as good as running the same configuration on my PC but very adequate. Lets say its not frustrating to use. But the XO's other qualities like low power consumption make it ideal for his application.

To elborate a bit on the simultor sending messages to the radar: I really like the idea of having AIS for collision avoidance. As I said in previous postings, it would have really come in handy when we were crossing the gulfstream to Cuba in the middle of the night when we had a lot of traffic around us. Having radar was nice but trying to determine if they were a threat to us took a lot work. AIS would have really helped in this situation.

I have a Furuno 1722C radar/chartplotter but it doesn't support AIS. To get a new radar with AIS support would cost around $6000. But while reading the Furuno radar documentation I noticed it supports ARPA (see: Automatic Radar Plotting Aid - Wikipedia, the free encyclopedia ) which gives you a lot of information like AIS such as CPA/TCPA. To get ARPA you need to feed target tracking messages (TTM) to the radar set . These messages contain the range and bearing (also speed and course of each target). All this information is in AIS messages.

So I when wrote my simultor program to test the navigation programs, I realized if I allowed it run in a non-simulation mode to actually receive AIS and GPS messages, I could extract the necessary information from the AIS messages and create TTM messages that I could send to the Furuno radar at the helm. This gives me much of the same information as AIS. For instance as you can see from radar display the small circle is the target and the vector line shows it direction and speed. If I put the radar cursor on it it will tell me the course and speed and also the CPA/TCPA. It doesn't give me the MMSI or name of the ship but a short hop down to the Nav station to look at SeaClear would tell me that information.

I'm still having some issues with this feature. If I feed many TTM messages to the radar it doesn't display all of them. I have not been able to figure out why yet. Work in progress...

Paul

[agkirk]

Paul, Great example of the use of existing hardware and the use of innovative SW to create an even better system solution.

I purchased one of the BU-353 GPS units from Bluetooth GPS, GPS Data Logger, GPS for Palm, Laptop, Blackberry, PDA, Mounting kit for Garmin, Mio, TomTom - buy GPS Now for about $35US shipped, using promo code AXgps. Plugged it in with SeaClear on my XO's USB port it came up with no additional SW changes. I believe I had made the SW mods you mentioned recently in my earlier attempt to interface a Garmin 76C unit.

Thanks again for your help.

[Maren]

Originally Posted by phiggins

The Simulator was also taking the closest AIS targets and converting them to TTM sentences and sending them to the Furuno radar where it displays them as ARPA targets. This gives me pseudo AIS on my old 1722C radar which doesn't have AIS support.

Very clever! I however am still fooling around with sugar ... at least until the 8 gb card shows up.

[phiggins]

I also got one of those BU-352 GPS and it works great.

I have tested this setup under sugar and it works too. Not as as responsive as Ubuntu but still usable.

Paul

[cooper]

Hi all ,
has anybody tested what the current draw of the XO is when running an application ? (or an eeepc) . I have a micro pc running a lap top cd drive and 12 v dc in power supply (no inverter) .It pulls between 2.4 and 2.8 amps. I am sure the mini laptops will draw way less but I am curious as to how much less....cheers