Dear Friends,
today i doing my first flight with new revision of VR Dragon.
Dragon components are :
VR Brain (Multipilot32 ).
VR Imu Full
6 x 50 Amp Motorius ESC
6 x 13 APC propeller.
6 x Turnigy Motors
Carbon Fiber Frame.
The first gimbal tested is PhotoHigher AV 200.
This kind of configuration can
I put on Dragon for the test 2 kind of camera Panasonic SD90 and Canon EOS 600D.
During my test i found some problem on rolling shutter on SD90 . The Canon EOS 600D don't have any kind of problem it is perfect camera.
The RTF Kit will be available at the end of october if you need more information contact me at : lasernav@gmail.com
Original post : http://www.virtualrobotix.com/profiles/blogs/vr-dragon-2-0-first-flight-with-gimbal-firmware-arducopter-32-rev
More picture for building log : http://www.virtualrobotix.com/photo
Comments
Thanks for the info Roberto.
Same layout as currently used by arducopter code.
You have done a great research in the last years... I hope to migrate soon to a 32bits platform :)
I will post stability feelings on our big Y6 for comparisons.
P.S:
We are proving that we are not PIGS :)
Hi Jose,
this is my prefered schema.
http://gallery.mikrokopter.de/main.php/v/MKBilder/schema_y6.jpg.html
On my mixertable implementation on Arducopter 1.0 NG and 32 in the last 4 years of experience i test all this configuration frame. I don't only test the 8 V and 8 U.
The mixertable functionality available on arducopter32 is simple to reimplement all this configuration and other developer also in other community.
Roberto, thanks for sharing your experience, it is really useful for the community :)
What motor layout were you using in your Y6?
the older 3 upper CCW
or the newer 2 upper-front CW and the upper-back CCW?
A friend of mine has a tiny Y6 (40cm motor2motor) based on the old layout with default PIDs, and it is really agile and funny to fly. I didn't notice the strange behaviour you said, but maybe it is too small.
Another friend has recently build a heavy lift Y6 (rccarbon 65cm motor2motor) with MK3538 (same as pulso 2814/22) and the new layout. He has done only two easy hover flights to check systems, so I will ask him about his feelings on stability.
Thanks!
Yes Ture , with Mixertable on Arducopter32 is possible to set for every motor the quantity of gas i develop it expecially for Coax Configuration .
I don't know if you remember this video ... but it don't fly so bad. Fly well but i need 3 day for setup and is not so stable as hexa radial. I think that is more simple to use radial configuration for automatic feature as rtl or loiter.
http://www.virtualrobotix.com/profiles/blogs/vr-dragon-hexa-coax-he...
@Jeff @Jose,
so in my experience the Y6 configuration is good and stable if the frame is small not so big. The main problem that i found are :
The motor in coaxial configuration produce a lot of vibration respect of radial. because you have on same tail 2 motors.
The other problem is that you need to found two propeller with different dimension for obtain same quantity of propulsion. If you don't have same quantity of propulsion , Yaw correction introduce component on pitch and roll , too . So if you want to rotate with your hexa youh have also strange effect on controll.
Normally a Y6 configuration is less efficient of radial you can have 15 - 20 % less propusion respect of standard hexa radial.
So all of this limit on this kind of configuration is not so simple to setup , is possible to obtain a good configuration , but is not simple . The main problem is to found correct propeller .
In my revision of code i introduce the mixertable so is more simple to setup an coaxial configuration , but if you use a standard arducopter configuration is not so simple to implement a good heavy lift coaxial configuration.
The video is the my first flight ... i change only the yaw pid from 7 to 3 ... and put the pitch and roll on 2.8 2.8 , stop no other change. In the coaxial conf for have a good flyable version of hexa i doing 3 days of pid :(
This is the reason because i prefer radial.
The advantages of Hexa Y6 is that you can fly also without 2 propellers and is better for acro fly. But for automatically and for fly cam application i think that is better radial.
Roberto, could you please elaborate more about the different flight behaviour between Y6 and radial hexa?
I supposed that radial hexa was more stable but, how much? is the difference really noticeable?
What about the wind?
Is the Y6 less affected by the wind in your experience?
Thanks!
Hi Edoardo ,
this summer i doing some test on heavy lift platform. I developed a coaxial hexa VR Dragon 1.0 where i doing the test with 3.5 kg of payload. And then this VR Dragon 2.0 that is a Hexa Radial configuation. This one is more stable of last one. So after the first test of flight i decide to put on it AV 200 PhotoHigher Gimbal and then my Canon 600 D with 10-55 lens.
That is the first result without any kind of software post processing . So i tested also the Panasonic SD90 but i saw that it have a bad Sensor because continue to have rolling shutter problem . I would add more payload on gimbal to understand if the RS problem could be solved also on that camera ... But Canon is very good solution.
It's a last step berfore Canon 5D or 7D. But the cmos of 600D is the same of 7D no difference for video . The advantages is only that there is less grams .
Best
Roberto
how may time you can fly with this solution ?