Replies to This Discussion

DeveloperPermalink Reply by Pete Hollands on February 21, 2011 at 5:44am

Super.  Take your time.

Get your plane flying in manual and trimmed in manual first.

Then reboot. This will re-inialise the trims into the UDB. It is important to reboot on the ground, after getting the trims correct in manual mode.

Then  hopefully you can get your PID's set up correctly for stabilized flight.

Get stabilized working well, with "easy overide" from the transmitter. Easy overide is important.

When you finally engage the "automomous waypoint mode", it too will have to overide the stabilisation, just like the you will do with transmitter. So you don't want he plane to be over-stabilized and "heavy to overide from the transmitter".

Anyway, hope it all goes well.

• ▶ Reply

Permalink Reply by Tinus Willemse on March 4, 2011 at 1:52am

Hello Pete,

 

So I had a test flight a couple of days ago, wasn't very successful.  Each time the plane is put in stab mode it would pitch up very strongly, causing it to make a 180 degree turn on the pitch axis.  

I had the dev board installed backwards to make it fit in the plane.  I thought that this would be fine if I only reverse the outputs.  I'll fix this next time.  Could this have been the problem?

It looks like the stablilization filter is diverging somehow, could this be due to the PID paramters not being correct?  (I used the standard values).  The plane doesn't look like it is even trying to keep level.  Any recommendations would be appreciated.

 

Thank you

Tinus

 

 

 

• ▶ Reply

Permalink Reply by Riccardo Kuebler on March 4, 2011 at 3:59am

Hi Tinus,

 

if you are using MatrixPilot 2.5 you can't reverse the board, it has to be mounted with GPS connector facing forward.

If you use a firmware from trunk you can mount the board in various positions, but you have to define it in the options.h file.

First ofall you have to set this right. Then you can have a right feedback about tuning being right or not.

Btw which plane are you using ?

 

Best regards,

 

Ric

• ▶ Reply

Permalink Reply by Tinus Willemse on March 13, 2011 at 10:34pm

Hi all,

 

I had a successful flight on Friday! :)

 

I reversed the board (as I had it mounted backward with my 1st attempt) and everything worked perfectly.  Stab mode works beautifully and navigation was perfect between two waypoints.  I was using a size 40 trainer (glow type).

 

Thank you for the replies and help!

Tinus

• ▶ Reply

DeveloperPermalink Reply by Pete Hollands on March 14, 2011 at 12:03am

Super. Congratulations! Any Pictures ?

• ▶ Reply

Permalink Reply by John Galczynski on May 15, 2011 at 1:47pm

 Hi,

     Will there be an option on the next version of this board (Version 4) to include a magnatometer, such as MAG3011 or a board, such as, http://www.futureelectronics.com/en/technologies/development-tools/...  either as primary, secondary or option?   If this was discussed earlier, I missed it. 

 

     The MAG3011 chip is about $2 plus shipping in quantity one from freescale.com OEM.  The "fact sheet" is: http://www.freescale.com/files/sensors/doc/fact_sheet/MAG3110FS.pdf  and the "data sheet" is: http://cache.freescale.com/files/sensors/doc/data_sheet/MAG3110.pdf...  

 

    As a SMT chip, a daughter board may be necessary.

 

 

 

 

 

Cheers,

John Galczynski

• ▶ Reply

Permalink Reply by William Premerlani on May 16, 2011 at 6:39am

Hi John,
The UDB3 supports the magnetometer that you can buy from the diydrones store.
Best regards,
Bill

• ▶ Reply

Permalink Reply by John Galczynski on May 31, 2011 at 10:18pm

Thanks Bill,

                 Ordered and delivered. HMC5843 3-axis magnetometer arrived.  I'll be working on it shortly.

Will there be a USB connector on the upcoming Version 4 board?  And do you have a link to the discussion area? I'll also be getting airspeed and pressure/temperature boards for this soon.  Current platform 98" wing span MQ-9 Predator. Flight results will be logged and I hope to make that available here. 

 

Greatly appreciate all the work you and your team does - A Mighty Thanks,

John Galczynski

 

• ▶ Reply

Permalink Reply by William Premerlani on June 1, 2011 at 6:35pm

Hi John,
The UDB4 will have lots of spare pins, but no USB connector.
Here is the URL of the UDB discussion group:

http://groups.google.com/group/uavdevboard

Here is the URL of the UDB web page:

http://code.google.com/p/gentlenav/

Best regards,
Bill

• ▶ Reply

Permalink Reply by Gil on July 3, 2011 at 3:56pm

Hi Bill, just want to ask you, if the UAVdev board can send/receive data from Ground station Planner - Michael Oborne or even from happyKilmore´s ground station ?

 

 thanks in advance.

• ▶ Reply

Permalink Reply by William Premerlani on July 3, 2011 at 6:14pm

Hi Gil,

Both the ArduStation and HappyKilmore's ground station will display data sent from the UDB to the ground station.

We plan to eventually support Mavlink in both directions when the UDB4 goes into production in a couple of months.

Best regards,

Bill

• ▶ Reply

Permalink Reply by Claudio on May 31, 2011 at 9:09am

I just bought the new UDB3 version.

Can anybody elaborate a bit on what are the steps necessary to have it communicate over RS232 and which softwares does it support?

Is some specific flag necessary during compiling?

The hardware connection doesn't bother me, it's the software that is unclear.

• ▶ Reply

• ‹ Previous
• 1
• …
• 51
• 52
• 53
• 54
• 55
• …
• 58
• Next ›
• Page