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S6R receivers

New Frsky receiver with in-built stabilisation

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Mike Briant20/11/2016 16:46:28
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I set the orientation of the receiver in the config tool Mike, i.e.: flat and pointing forward. Is there another setting I need to look at?

Attilio Rausse20/11/2016 17:15:30
101 forum posts

Mike Briant

Having looked at the instructions I think you aren't supposed to do the mixing in the transmitter instead the S6R will do this for you (you must use S6R config to tell it you have a flying wing) also you are not supposed to use channel 11. You will still need to program CH9 & CH12.

set up a mix for which ever switch you wish to use for changing flight stabilisation modes say SE. SE(up) is autolevel : SE--- is off : SE(down) is stabilisation.

Hope this works for you

Geoff Sleath20/11/2016 17:47:42
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Posted by Mike Blandford on 20/11/2016 16:44:45:

Geoff: OK, I've posted a first version here: **LINK**, with instructions.

Mike.

Thanks, Mike. I've downloaded and unzipped it but I can't easily try it because the S6R is installed in a model that's up in the 'hangar' above my workshop and I busy with my little Se5a which definitely won't be using an S6R as it would almost double the weight of the model

Geoff

Mike Briant20/11/2016 19:01:03
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Hi Attilio, yes I don't have any mixes set up on my transmitter but I do have aileron and elevator inputs set up on channels 1 and 2 as without those the controls don't work.

I've set it up as a flying wing in the config tool and specified how the Rx is mounted. Also whether I have channel 11 set up or not doesn't seem to make a difference. All very curious lol

Mike Blandford20/11/2016 20:27:39
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Maybe you need to change the direction of compensation for the ELE channel.

Mike.

Mike Briant20/11/2016 20:29:41
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The direction of compensation is correct. What's wrong is that it's correcting roll with pitch and pitch with roll lol. I think for now I'm going to test fly it with the Rx mounted sideways as it all works like that. My test model is expendable so fingers crossed and new pants on standby

Mike Blandford20/11/2016 22:17:19
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But that is my point. If one of the elevons compensation is reversed, you swap roll and pitch, don't you?

Mike.

Mike Briant20/11/2016 22:20:32
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Ah yes of course. Sorry, I misunderstood. That makes sense. I'll look at that tomorrow. Thank you Mike.

Mike Briant20/11/2016 23:25:41
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You were absolutely right Mike. So well done and thank you for that.

Mike Blandford22/11/2016 15:53:08
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An idea that might be useful. I'll try it myself sometime when I get my S6R into a model and fly with it!
The stabilising gain, if set OK for low speed operation may be too high for high speed. Since the master gain is controlled by CH9, try reducing the gain as the throttle is advanced:
CH9: +50% P2 Offset(50%)
*-20% Thr Offset(80%) [a MULTIPLY multiplex mix]

With the throttle fully down, the gain is as set by the pot (P2 in my case on ersky9x).
With the throttle fully up, the set gain is reduced to 60% of the value set by the pot.

You could use a curve rather than a fixed, linear reduction.

Mike.

Frank Skilbeck22/11/2016 17:49:17
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Posted by Mike Blandford on 22/11/2016 15:53:08:

An idea that might be useful. I'll try it myself sometime when I get my S6R into a model and fly with it!
The stabilising gain, if set OK for low speed operation may be too high for high speed. Since the master gain is controlled by CH9, try reducing the gain as the throttle is advanced:
CH9: +50% P2 Offset(50%)
*-20% Thr Offset(80%) [a MULTIPLY multiplex mix]

With the throttle fully down, the gain is as set by the pot (P2 in my case on ersky9x).
With the throttle fully up, the set gain is reduced to 60% of the value set by the pot.

You could use a curve rather than a fixed, linear reduction.

Mike.

Or you could add an airspeed sensor and feed the actual airspeed back in, apparently some of the Powerbox gyros have this option built in.

One potential problem with reducing gain as the throttle is opened is that if you were say landing at low speed and needed to go round again and opened the throttle quickly you'd have reduced the stabilising effect when the model is still at low speed and also experiencing some torque roll as the propeller is accelerating to speed.

Mike Blandford22/11/2016 18:25:25
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Of course an airspeed sensor would be useful for that, I was trying to keep it simple.

You could always add some slow or delay (or both) to the second mix on channel 9. Then the change of the stabiliser gain won't happen immediately, giving the aircraft time to change speed.

Mike.

Mike Briant22/11/2016 20:05:21
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A related and possibly stupid question. I've put the gain adjustment on the right slider. How can I tell whether high gains are with the slider at the top or bottom? When I move the model about it's not immediately obvious whether the surfaces are moving more or less depending on where I put the slider.

Chris Bott - Moderator22/11/2016 20:41:38
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Mike if you're not able to notice the difference then I'd suggest it's not changing the gain. On the monitor screen the bar needs to move from centre to one end, as you move the control.
Mike Briant22/11/2016 20:46:29
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On the Taranis screen it's showing that the slider is moving it's full range of travel but I can't see any obvious change in the amount of correction of the control surfaces. So yes it's probable that the gain is not changing. I'll have to have a closer look at that channel.

Mike Briant22/11/2016 21:18:00
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Just found the answer on another forum. "I put the gain on a dial also and found out that center is 0 gain and either end is max." So when I was moving the slider from end to end the gain wasn't changing because both ends are max gain. Doh!

Chris Bott - Moderator22/11/2016 22:00:34
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That's what I was getting at Mike, the gain channel needs to move from centre to one end.
This can be achieved with 50% travel and 50% offset.
Mike Briant22/11/2016 22:11:17
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ah yes sorry, I misread your post the first time. Now I see what you meant. All becomes clear...lol

Many thanks

Mike Blandford24/11/2016 17:21:23
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I've posted another update to SportSet:
Graphics for the mounting options added, I also reduced the size of the graphics data so the .exe gets smaller.
Offset angle and enable values added.
Single COM port selector with 'scan' button to re-discover available COM ports. This is useful if you start the program before you plug the STK in.

Mike.

 

Edited By Mike Blandford on 24/11/2016 17:21:32

Mike Blandford25/11/2016 21:09:20
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For anyone running linux, I've managed to build a copy of SportSet for Linux. I've posted it along with the windows version.

Mike.

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