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New MTK firmware fix update.

Posted by Jordi Muñoz on September 2, 2010 at 5:30pm

Help wanted! Here is the latest firmware revision that fixes the longitude issue. If you are one of those that are having problems please try this new version:

AXN1.30_2278_3329_384.1151100.1_binary.bin

Let me know your results.

Instructions for reloading your firmware are here.

issue, mediatek, mtk, position, problem

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Comments

Serge September 4, 2010 at 1:25am

Hi,

ok, I think the issue had to do with a bad lock anyway. I'm inside my house, so it's not strange that every now and then there is no good lock. It turns out that the reception drops out if I hold my hand above the receiver, or if I sit between the receiver and my window. Eventhough the blue led on the mediatek remains solid, the APM stops outputting GPS data.

Long story short, I think it all works as a charm if I take it outside, hopefully for a maiden next week =]

thanks again!!

ps: here is the log where you can see two gaps in GPS data when I hold my hand above the receiver: http://dl.dropbox.com/u/3094748/log_new_mediatek_library.txt
Serge September 4, 2010 at 12:37am

Oh Yes!!! Thanks so much!
It did indeed fix it, It now puts me right where I need to be at lat:51 lon:005

One issue that i'm having is that it sometimes will keep led C blinking indicating that messages are being received, but that they are not correct. The MTK then indicates a fix (blue led), but the APM does not get any coordinates. Strange thing is that this occurs lets say 2 out of 3 times after startup. I can't figure out yet what determines success or failure. I'll keep you posted if I figure it out.

thanks again!
Earl September 3, 2010 at 5:31pm

Looks like it fixed my bad MTK.
Thanks
Earl
Developer

Jordi Muñoz September 3, 2010 at 5:24pm

Hello Alex,

After now yes. But anyway I still don't know if the firmware works fine...
Ken September 3, 2010 at 4:56pm

Oooh goody!
I think I will have time to do an upload tomorrow. (Saturday)
Fabien Bruning September 3, 2010 at 2:22pm

Thanks, I got the right coordinates this afternoon.

Sorry can't test anything else, my UAV flew away :(
Alex McEwan September 3, 2010 at 1:18pm

Will all the units from the store from now on have the updated firmware?
Steve Oliver September 2, 2010 at 9:32pm

Thanks Chris!
3D Robotics

Chris Anderson September 2, 2010 at 9:31pm

Steve: Yes, I think that would work. Try the sketch in the manual here.
Steve Oliver September 2, 2010 at 9:28pm

Is it possible to use a sketch on the APM to pass through whatever serial commands are needed to update the firmware?

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