Replies to This Discussion

DeveloperPermalink Reply by Doug Weibel on October 26, 2009 at 7:19pm

Shawn,

Several people have had trouble getting a lock and there are a couple known issues.

What firmware are you using? V1.1 has a known issue with the ublox. V1.2 is OK

The connector between the ublox module and the adapter board is really bad. If you have it "packaged" in any way that produces torque between the two the connector may not make good contact.

Worst case - hook up your ublox using the ftdi cable (there are directions here in the ArduPilot main thread somewhere) and use ucentral to see what is going on with the gps.

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Permalink Reply by shawn vatcher on October 26, 2009 at 7:21pm

yea the connector seems to be ok.. im running 1.2. i will try out ucentral. not sure what that is right now but i will go find it.

thanks

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Permalink Reply by Benjamin Lanehart on October 26, 2009 at 9:11pm

You sure you are using 1.2? Not to argue with you but IIRC the cube was deactivated in 1.2, but I see it in your picture. It doesn't come up with mine. Anyway, did you setup the ArduIMU_DCM_V12 sketch properly? I highlighted a screen shot of mine. You need to print the DCM to get the visuals to work...

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Permalink Reply by Benjamin Lanehart on October 26, 2009 at 9:13pm

wow, small pic...

let me know if you can see that...

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Permalink Reply by shawn vatcher on October 27, 2009 at 9:41am

yea for sure im useing 1.2. you can turn the cube on and off with the button on the bottom right of the labview screen. im pretty sure im not getting a signal lock for some reason. i will try a couple things when i get home and let you know.

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Permalink Reply by shawn vatcher on October 27, 2009 at 5:58pm

definetly has something to do with the gps. its runs the same with the gps disconnected and when it is connected. no signal comeing through. why this is happening im not sure for now. guess i will keep playing with it until i figure it out.

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Permalink Reply by shawn vatcher on October 27, 2009 at 6:20pm

still no luck i have no idea. if anyone knows of a board out there that will let me interface the modual to the computer for use with u-center that would be the next step. cant seem to find one. sparkfun has a development boar dwill that do for this purpose?

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Permalink Reply by shawn vatcher on October 30, 2009 at 1:26pm

well this post is not just a arduimu problem i cant get a lock on my adrupilot either. i used the sparkfun connection board to sync up with ucenter but even thats not working. im thinking my module is bad guess i will just buy another one and see if that works. only way to tell.

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Permalink Reply by shawn vatcher on October 30, 2009 at 2:57pm

i decided to try uncentre one last time and pop it took the frimware update. it was dead before but i just retried and retried and finnally it took. so it appears fine in ucentre but i dont know what to configure on it to make it compatible with arduimu or adrupilot. slowly but surely getting there lol.

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DeveloperPermalink Reply by Doug Weibel on October 30, 2009 at 8:59pm

I think there is some unused initialization code in ArduPilot. Take a look there for a starting point. Only thing I know is it is set up for a binary mode (not NMEA) and the baud rate should be 38400 (or whatever the standard value close to that is). I am not near my setup at present, but If you don't get it sorted in the next day PM me and I'll hook one of mine up to ucenter and see what the settings are.

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Permalink Reply by Benjamin Lanehart on October 30, 2009 at 7:06pm

weird, I hit thsat button a few times, and the cube never shows, oh well...

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Permalink Reply by Mario on November 19, 2009 at 12:10pm

Hello to all !!

I have both arduimu ver 1 and 2(flat one) + ublox GPS and adapter.

In virtual lab 8.5 ground test or processing ground test station I can see the imu working but I get only zero's on every GPS fields ( no lat and no long readings). The arduimu board is showing a blue led (gps lock) and a yellow intermittent led wich I understand is normal since I do not move and there is no yaw drift correction. I tried going outside under clear sky but no luck...still no GPS position reading. If I remember well I ordered the ublox ready for ardupilot.Could it be the reason for my problem?Any help will be greatly appreciated.

Thanks to all for your good work

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