T-Rex 450 flying automatic Missions
APM 2.0 firmware 2.7.3 MediaTek and barometer
The non flying weather took a little break; this was a good time to test Mission flying with my T-Rex 450.
The sea breeze and the SW wind were fighting each other, so the flight was at times quite bumpy. As you can see on the video, the Heli was battling it very well, and the APM 2.0 with firmware 2.7.3 did a great job.....
lots of thanks to the DIY Heli team!!
The Mission was straight out, and then coming back in a zigzag route with sharp turns.
I reviewed the logs at home, and the Mission was very much on track.
I’m really happy with this achievement!!!
A small glitch I like to mention. When the Heli likes to land at the end of a Mission ( I know this is a bug) and I interrupt that and switch to Stabilize and then back to Loiter, the heli will drop to the ground. I experienced it two times. After going to AltHold and then to Loiter, everything works. Looks like the landing information have not been reset, I don’t really know.
Comments
Rana, Manfred is possibly the only one posting blogs but, certainly not the only one pushing the boundaries with helis.
Manfred, I will have to try your settings, but so far, I have not had much luck running auto missions. I tried to do some tonight, but it didn't go well. I'm using a much higher WP Speed, and I find the heli tries to dive for the ground when it gets going. Check this out:
I was very lucky to save it. This was the 2nd or 3td attempt. On the first, I was using the camera and had to grab control back after I realized what was happening!
I believe the issue is that the heli starts flying more like a plane and less like a Quad at high speeds. Be careful. We might need to do something special for helis here.
Thank you very much for your encouraging comments
At the next fine weather with hopefully less wind, I’ll fly a more demanding mission and will post it then with everything attached, the mission file and flight logs.
Manfred, Thanks my friend! Really appreciate it, it will help a lot of us who are attempting similar with our TREX 450s!!
Way to go - and thanks again for posting it!
Manfred, you are the only known person in the world who has done such great efforts on APM with Heli flight testing. Thanks for sharing your parameters and subsequent suggestions / tips.
You won't be able to attach anything here in this blog. Though "discussions" have no such limitation, you may open a discussion with similar subject and attach tlog there.
@ Hein
No I haven’t got a T-Rex 600 yet, my eyes are on a T-Rex 800 for the future.
But I think your PID would look a bit different, more weight more P and D I think, depending also Flybarless or not. Be careful with the I term and the I max.
Hi Manfred,
That is awesome. You have not done test on a trex600 as yet? I suspect the PID values should be very much the same.....
Anybody that has tried it on a trex600? Please share also PID values...
Greetings,
Hein
I dont know how to share a file in here......
I was impressed too how well the little T-Rex 450 preformed in the gusty wind....
The PDI I used:
Be carefull with the I term and the I max. As you can see I reduced that very much.
The I force ramps up very fast to I max if the heli can’t reach the target in a certain time, because of a wind pushing it out and then you get that overshoot or oscillation.
The D force gives an initial push and then ramps down fast, like you kick a ball into the target; this is much more calming. The P force is just proportional to the distance to the target.
With lower values it might get pushed a bit further of target but it comes much softer back and the system calms down quickly.
Hats off for all your great efforts !, Pls share the tlog file and parameters file as well.
Also the param file would be great to review !
-
1
-
2
-
3
of 3 Next