Hi all,
MatrixPilot quad_testing code begins to be funny to fly :)
In the video you can see a flight with the code at r1158. It is very stable and reliable. Controls are very smooth.
The quadrocopter is an Arducopter frame equipped with UavDevBoard4. No GPS, no other sensors are used at the moment. The only available mode is Fly By Wire for now.
Many thanks to Bill Premerlani and his fast implementing of his great research and development work on this subject.
Performances are growing up very quickly.
Best regards,
Ric
Hi Ric,
Thank you so much for continuing to be the top MatrixPilot test pilot, and for taking the video. Also thanks to the other MatrixPilot users who noticed the quad code, and are trying it out, especially Mark Whitehorn.
I notice that you flew your quad nearly out of sight, Ric. I recommend anyone watching your video to use full screen mode to make it easier to follow your flight.
Also, I suggest anyone reading this should take a look at some of Ric's other videos after the one in his posting finishes, he has several interesting videos.
So, now the "cat is out of the bag"....
Anyone who has a quad frame and any version of a UAVDevBoard who wants to try out "MatrixPilotQuad" is welcome to do so. Just keep in mind it is alpha software, and not supported. There is a discussion thread on the MatrixPilot forum that should answer most of your questions. I will start editing the wiki pages for it soon.
As Ric mentioned, r1158 provides fly-by-wire control only. It is rather smooth, responsive, and stable. All it uses for sensors is the gyros and accelerometers on a UDB. Between now and spring, I hope to develop a full quadcopter autopilot. I have some ideas....
Best regards,
Bill
Comment by DaveyWaveyBunsenBurner on January 8, 2012 at 2:42am 
That is great, the UDBv4 just keeps getting better!
Keep up all the good work and all the best with the UDB quad autopilot!
Comment by 13brv3 on January 8, 2012 at 8:06am Hey look, it's a UDB quad copter! Good to see some of the old familiar names again. What's really funny is that I was digging through my bag of UDB3 stuff the other day, which made me think to check SF to see if there was a new version. Sure enough, there was a UDB4. Even though I'm not flying any fixed wing, I couldn't resist ordering one, and now I see there's some work on the multi-rotor platform. Very cool! I had really great success with the UDB on fixed wing, and can't wait to see what it can do on multi-rotor.
Cheers,
Rusty
Hi Rusty,
Its good to hear from you again.
By the way, MatrixPilotQuad supports all versions of the UDB, including "Rusty's board":
#define RED_BOARD 1
#define GREEN_BOARD 2
#define UDB3_BOARD 3
#define RUSTYS_BOARD 4 // Red board with Rusty's IXZ-500_RAD2a patch board
#define UDB4_BOARD 5
Do you still have your "Rusty's board"?
Best regards,
Bill
Comment by 13brv3 on January 8, 2012 at 8:54am Hi Bill,
Yes, I still have the modified board, which I believe started as a UDB2 now that I think about it. It's still mounted on that blue foam wing plane that wasn't meant to last more than a couple weeks, under a significant coating of dust... I've got a couple other UDB boards, but I don't recall whether I converted them to the new gyros or not. I should certainly have the hardware covered, and of course frames are no issue :-)
Cheers,
Rusty
Excellent, the UDB boards really are turning out to be the boards that can.
Comment by Alex Arevalo on January 8, 2012 at 12:36pm Nice video!. It looks like a beautiful place to be flying. That quad looks to be a very stable and robust design. Congratulations and keep up the good work!

Hello Riccardo,
Great video and outstanding work on the UBD4! I was talking with Pete over a coffee the night before he was due to leave to come out to do some testing, I think I will be looking to invite him over for another now...... :)
Regards
Martin
Hi, thanks all !
Martint, I would like be there :)
Best regards,
Ric
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