To a user somewhere around Neuss, Germany

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To a user somewhere around Neuss, Germany

mlyle

On Seppuku, who shared a tune with the comment ':-) All fine' --- http://dronin.org/tunes#?key=ahFzfmRyb25pbi1hdXRvdG93bnIYCxILVHVuZVJlc3VsdHMYgICAsNW2kgoM

Are you around on the forum? Can you share build details and/or pictures?

This is the "best quad" so far to share a tune with the new autotune! Here's the taus vs. betas of all the shared aircraft:

And here's how the roll response looks vs. the model. (Very pretty)

Congrats on an awesome aircraft!

tracernz

image.png

mlyle

Yup-- I wonder about what 'Rafe' is (and ESC settings) and frame etc. This is a singularly good result-- there aren't any points near it.

tracernz

Wraith?

pug398

tracernz
My bets on the flyduino race esc. Could be the same as the Wraith lol.

jhitesma

I notice he says 6" tri blade props. I wonder if the slightly larger motors and 6" props are what's giving him the edge. I still prefer 6" two blades over most 5" on many of my builds but haven't had anything I'd be willing to put 6" tri's on yet.

LitterBug

jhitesma Hmmm. may have to check the results from my Krieger225. It's a 6" tri blade.... Oh wait, I'm not in Germany.... 6" blades on a 210 inch frame would be VERY tight. They are tight on my 225.

https://dronin-autotown.appspot.com/at/tune/ahFzfmRyb25pbi1hdXRvdG93bnIYCxILVHVuZVJlc3VsdHMYgICA0OrnyAsM

mlyle

LitterBug @ufodziner on IRC says the HQ triblades are particularly good.

That's an old-autotune tune, right? Would be interesting to see what you'd put up with new-autotune. (The current numbers are a bit worse than what was measured by the guy in Germany-- but the old numbers aren't very reliable).

LitterBug

mlyle I need to fix my fpv antenna... Maybe it will make it to the field tonight.....

LitterBug

Yah.... and I have a set of the HQ 6x4.5x3.

LitterBug

Yeah, I can't claim it. Not even close: my weight without battery is 340. http://dronin.org/tunes#?key=ahFzfmRyb25pbi1hdXRvdG93bnIYCxILVHVuZVJlc3VsdHMYgICA8LGzwAoM

Harvey is throwing winds our way making clean air tunes a challenge.

mlyle

@LitterBug --- hope all is well re: winds. New autotune isn't really picky about perfect conditions anymore.

Still very respectable numbers you're putting up.

LitterBug

mlyle We in Ohio are pretty far north of the gulf and winds aren't catastrophic by any means. NOTHING like what Texas got.

Krieger225 felt absolutely awesome after the update and retune last night. It has been a problem child build with major issues on each maiden. (most pilot induced) I think all the gremlins have been exorcised at this point. Got a few packs through it last night and tried a few different props. First set was HQ 6x5.4x3. Second set GemFan 6x5.4x2 CarbonFiber. Not sure why the second tune doesn't show in the results. Maybe my hotspot dropped when it was uploading. Prefer the Tri-blades over the duals. Have some oscillations with the duals. Need to get a logger on it.

I'm going to have to go through my whole fleet. I thought for sure they had all been updated with Neat and re-tuned. Looks like I have only done a small handful.

raemin

Dumb question what is "beta" referring to? Could only find beta software with my favourite search engine, but nothing describing beta.

jhitesma

raemin @mlyle could give a more technical description. But basically as far as I understand it Beta is a measurement of how strong the motors are at reacting.

So Tau is how quick they can react and Beta is how much effort they can create. High beta will usually create lower tau's but it's a bit more complex than that.

mlyle

That's exactly right. Beta is a measurement of how fast we accelerate compared to motor effort-- how many degs/sec/sec 100% effort on an axis creates. It's usually stored as a logarithm by our code, so a value of 9 means e⁹ =~ 8100-- so in 25ms of effort, we can speed up 220 deg/sec. Tau is a measurement of how quickly between trying to do something that we end up hearing about it on the sensors, so it measures electromechanical, mechanical, aerodynamic, and sensor delays.

Beta is a measurement of how much control authority we have. Tau is a measurement of how much "small signal" control bandwidth we have-- that is, how much bandwidth we have if we're not limited by maximum motor effort/beta. And there's various noise/cross-correlation metrics (we don't have a good one, really, yet) that measure how much unexpected stuff happens that in turn we need to use that bandwidth to fix.

ari

Hello,
and thank you.

Here it is :-)

dRonin Neat
Lumenier QAV-X Charpu
Seppuku
Raceflight Bolt 4in1
EMAX RS2306
Lumenier ButterCutter or Schubkraft 5x4x4, can't remember but perform nearly same
TBS Unify Pro HV
Foxeer HS1177
FrSky XSR
Tattu R-Line 1550

schreihals.jpeg

I want a fast thing.
It fly nice and you can push it hard :->
the rear motors annealed (? getting to hot, windings are black) after ~25 flights

"rafe": Autotune on the field with a 7" Windows 10 Tab., Keyboard is not existent and the sun is bright,-)

HangTime is great and when your updated Version ("relaxed power Limitation") is there,
my last complain is gone :-)

Thank you all for this great Project!
I'm following since TL and it's getting better and better.

mlyle

@ari Holy crap! Thank you.

I may need to build one.

And I'm glad we're doing well for you -- I am hoping we can get some really good core control improvements into the next release!

yds

I wonder how this ToothFairy compares?

best looking graphs I've seen on any of my builds:

Roll
Pitch

raemin_bis

The Tau is quite similar, but it seems to me that ari's aircraft manages to cope with a gain that is 4 time higher. Not sure how to interpret this: either his aircraft is much heavier than yours and requires that much amount of torque in order to produce a similar motion, or his aircraft just handles gracefully a massive amount of torque without shaking like hell?

Anyhow it's interesting to see that the most efficient aircrafts do not have the lowest tau (<10ms) but a balance between an approx 20ms tau and massive torque (big beta). These machines are unfortunately not for me as 1) I am a bad pilot 2) I'd rather save on batteries (these setups are battery killers). This is tempting though...