View Full Version : Qopter on crack - a round tour in my neighborhood

06-14-2010, 06:09 PM
Ok, now I have some video but even though raw AVI from the Canon compact cam is great quality, Youtube decides to make it bad. And In the on-board video I experienced a lot of vibration. Have made a new cam holder now.

First some pics:
http://www.mediafire.com/imgbnc.php/17383d6921a3803b89c0b6c08804cbd02g.jpg (http://www.mediafire.com/imageview.php?quickkey=hjjmnjuzomy&thumb=5)
http://www.mediafire.com/imgbnc.php/4015f81717deb1e87d468bf5184a06b52g.jpg (http://www.mediafire.com/imageview.php?quickkey=ygmdkye0gmm&thumb=5)
http://www.mediafire.com/imgbnc.php/0a500b65b41d0f5378bf44424861aa4a2g.jpg (http://www.mediafire.com/imageview.php?quickkey=4nl4jmdymzj&thumb=5)

Then one on-board video:
Then trying-to-hover video:

Will go out and try to make a better on-board video now.

06-14-2010, 06:17 PM
Lol I got vertigo watching the onboard video, but it looks pretty stable to me, nice job! Are you flying in x mode?

06-14-2010, 07:47 PM
Heh, yeah I know, was not expecting that. I fixed it. Thanks, but wait till the new video is up, it's much nicer. I sweat balls when doing the highest altitudes. Yes, I'm flying in X-mode for looks and camera placement.

http://www4.mediafire.com/imgbnc.php/e882453ce8bce7696f02d1eca88bd14e5g.jpg (http://www.mediafire.com/imageview.php?quickkey=zmyotzgmmny&thumb=4)
New stabilized video on upload, 173 minutes to wait Youtube says. I also should have ground video when doing the on-board.

06-14-2010, 07:57 PM
Haha I know what you mean about flying higher than roof top, I think we'll feel more comfortable as we get more practice though ;)

06-14-2010, 11:28 PM

The latest and best onboard video. Got some altitude. But there is more to come, I'll try to upload the video taken from ground too. Unfortunately youtube is always making videos seem worse... RAW file is 950MB if anyone wants it :)

The screenshot above is from this video but from the RAW file.

06-14-2010, 11:44 PM
Have you tried clicking the 480p version of the video? Those are normally a bit better, but they show up after you upload the video because it has to be encoded.. Seems like you have pretty decent altitude holding. Did you alter your throttle curve at all?

06-15-2010, 12:06 AM
Hmm, that just popped up. Seems a little better now, but I still don't like Youtube. Maybe I should try Vimeo or something. The RAW file failed after uploading in like 3 hours so I had to use a quick last resort called Movie Maker to just compress it a little.

As a matter of fact I read about throttle curves here in the thread about too little altitude control, and thank technology for not being stuck with our old 35MHz totally analog transmitters! As soon as I had read up a little on my Futaba 6EX I adjusted my throttle curve like this:
http://www1.mediafire.com/imgbnc.php/479a01f626216633c09ea8159792f3a85g.jpg (http://www.mediafire.com/imageview.php?quickkey=odammenmgml&thumb=4)
And I have to say it made me into a better pilot than... before :) It made wonders.

But I am still writing my auto takeoff/landing/range-to-ground limiter code with which I hope to eliminate the bouncing you can see in the beginning.
It is also the start for me to do any serious coding work since last year. Next up is battery monitoring over 433MhZ TX/RX and maybe find my old small camera with TX in it to do some real-time-looking-at-my-computer-screen-flying. I have so many plans!

06-15-2010, 12:07 AM
...New stabilized video on upload, 173 minutes to wait Youtube says. I also should have ground video when doing the on-board.Nice job. Now that is an on board video. I thought the first video was of the quad going into a cosmic worm hole :)

06-15-2010, 12:11 AM
Ya, I've been messing around with my throttle settings trying to get the area right where the quad will hover to be more sensitive to the throttle by stretching it out.

06-15-2010, 12:21 AM
Thanks! More to come... Hopefully youtube will not destroy the HD film taken by the "Camera man".

Oh, the first one. I mixed it up with my StarTrek Craft. I was playing with the Improbability Drive function... :)

Yes thats exactly what I have done too and I figured that my hover is somewhere in 2-3 (on my TX 5 point curve) so that's why I have such a steep curve from 1 to 2. Also I found out that I never go as far as over 90% throttle, so I thinned it down to 85 as maximum, further stretching everything out. Not it is very much more responsive!

06-15-2010, 12:56 AM
practice pactice like they say, after 1000 hours of flying you won't anymore thing that you are flying you just do it :)

You should give more throttle when you do takeoffs then you don't jump in grass. Any problems on orientation when you fly on top of those roofs? But yes overall it looks quite stable and your hands will get more better on flying over time. I remember when I started to fly my normal rc helis.. They wobled ja jumpes all the time and now people asks that do I use somekinda stabilizer on those.. No I just fly them without thinking, it is so called nerve driven muscular control.

Your brains are too slow to reach fast enough and when you start fly "automaticly" your hand makes correction even before your eyes "sees" it :)

Ok hopefully that part will be handled by software soon but still..


06-15-2010, 01:57 AM
Yes, hopefully soon :D?

06-16-2010, 12:21 AM
JP, I was out flying and actually just practicing today and I gotta defend myself by saying it was the first time I flew with any weight added (the compact camera) when I took the video so thats what caused me to bump into the ground too much, but generally I am a little afraid of the throttle. Today I gave totally too much throttle instead (with the extra weight off) and the quad was going so fast I almost thought it had gone into hyperspeed and flown into space.

Anyhow, I guess this kind of practice is a little like playing guitar as I know 90% of all my "musical" skills is in my finger muscles.

But this is not what I have in mind with my quad, it is supposed to be fully compatible with drunken bad and unexperienced pilots, or more to my liking 100% autonomous if it ever gets to that but it is something to aim at. My progress is quite slow on that front since I got introduced to this project in particular just a few months ago. Before that I thought I had to do it all myself and then I would certainly not have been near the air at this time. I am in a state where I look for as much "finished" code I can get my hands on to make this project a more time realistic one, so I can get into the actual interaction part.

As a small step towards world domination I am still in coding on my auto takeoff/land thing. And hopefully 1.8 SW is going to be super awesome and have a "I can fly myself"-button incorporated :)