HELP! Drone going right in AUTO mode Almost lost quad

Wow what a test. 76 Seconds in the first parkour it is barely acceptable but we did not use any spline waypoints. Because we really lost altitude so much. Do you know any reason for that? I will post a bin file after the spline test @dkemxr

https://ardupilot.org/copter/docs/parameters.html#atc-thr-mix-man take a look at that one.

I set that parameter to 5. Will prioritizing Altitude Control over Throttle slow me down ? @amilcarlucas

5? .5 more likely. That’s fine, my craft fly 40 m/s with that setting.

Yes sorry for that false info :sweat_smile: We still could not test. We are going to test and I’ll send a log.

I forgot to say it is not possible for me to go down below 5m. When I increase Jerk Acceleration and Angle_Max it will eventually lose altitude. But is it safe for my drone to go higher than 10metres @dkemxr

Then you don’t have the thrust to accomplish that.

Hmm. How can I measure that instead of testing

Put one of the ESC + Motor + Prop on a trust measuring stand and multiply by the number of motors

cos(pi * ANGLE_MAX / 180) * trust > 2 * copter weight.
If not, it will loose altitude.

Thrust is king, you need trust if you want speed.

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It sure is. It’s not an Apples/Apples comparison but my 4" that will do >40m/s in a mission has a MOT_THST_HOVER value of .125 Looking at the last log he posted it’s .212

I had my first high speed spline test and it was surely majestic but we feared and stopped the mission because of the vibrations while bending the spline corners. What to do? Re-Tune? Increase angle_max for smoother turns? Or is it all about the mission itself? Please take a look at it. We are currently testing on the field and we need solid answers right now. @dkemxr @amilcarlucas. Drive: https://drive.google.com/drive/folders/1wy02OtWnXQOji6Hfafm5sGoxc1Iteole?usp=sharing

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