Understanding the mixer in iNav
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- Опубліковано 7 сер 2024
- 🔗 www.MrD-RC.com 🔗 / mrd_rc
In this video we take a look at the mixer in iNav. We look at:
🛩 how to know which outputs your motors and servos will be using
🛩 how to add things to the mixer
🛩 where to reverse servos
🛩 using different weights to offset throws for multiple axis on a single control surface
🛩 mixing multiple inputs together
🛩 how to slow down servos
🛩 how to only use certain mixer lines based on iNav programming (logic conditions)
NOTE: In this video, I mention the "automatic climb mode" and give a very basic example. If this is set up for real. Make sure to add logic conditions so that the climb input is only active when you are in cruise mode.
✈️ Contents ✈️
00:00 Introduction
01:28 Taking a look at the mixer page
02:42 Looking at the default mix (Airplane used in this example)
03:34 Working out which servos are assigned to which outputs
07:15 Reversing outputs
07:57 Adding mixes together
09:35 Other inputs available
10:30 Weights
11:49 Speed, to slow servos down
12:21 Active column, for logic conditions
13:51 How to move a servo if you have already wired up the servos
15:10 Conclusion
Thank you for watching this video. Time is precious, so I hope that you got some benefit from this video. If you have any questions, please leave a comment and I'll do my best to answer. Please try to keep questions relevant to the video in, as they may also help others who have the same question.
✈️ In this video ✈️
🔗 Setting up flaps, flaperons, or spoilerons in iNav: • Adding Flaps in iNav. ...
🔗 Setting up throws in iNav: • Setting up control sur...
🔗 Setting up elevon mixing in iNav: • A Guide For Newbies - ...
⚙️ Matek F405-WSE flight controller: bit.ly/MrD_32IFZET
⚙️ FrSky Tandem X20S transmitter: bit.ly/MrD_3x6n6JL
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Thank you for your time, and don't forget to fly it like you stole it! - Навчання та стиль
Darron:
It is obvious that you have an outstanding mastery of the compex logic of this setup and its flexibility.
Not having used INAV yet myself, it was well over my head, but it was very useful to watch & listen for when I'm ready for this.
You speak clearly, though perhaps a bit too quickly. It might be helpful to pause periodically to let our brains catch up with the logic.
I'm elated that we have devs like you to work out this logic, enabling us to use it when we need it.
Thanks. - Jim
Thanks James. If you're just starting out, the most important part to understand on the mixer page is the output functions table. That's the key to getting the mixer and servo outputs set up successfully.
Thanks for the feedback on the speed. I have kind of noticed it and will try to slow down with my speech. However, I won't add gaps for pauses. As these can interrupt the flow of the video for those who aren't so new. I have to cater to everybody. But, the pause button on the UA-cam player is always an option. And I hope the chapters are helpful if parts need revisiting.
Your videos are so great and you have a gift for teaching and makings easier to understand. Thank you! You are seriously underrated. Keep up the great work!
Thank you for the kind words. I’m glad the videos help.
This was the insightful video I was searching for. Thank you. I'm putting a Matek F411-WTE into my FT Spear build! Wish me luck with the first auto-launch!
I’m glad it was helpful. Good luck with thr maiden 👍🏻
Wow so much more function in that tab then I thought. Had no idea
Yep, you can do a fair amount on that page. Combined with the programming, there are lots of possibilities.
Great video D. Very helpfull. Thanks
Thanks Bruno 👍🏻
Very nice info video
Thanks 👍🏻
Good.
Nice, thanks, would be great more mixing videos with in detail what everything means and more complex mixing, also the tailsitter vtol configuration
Thanks. What do you mean by more complex mixing? Adding flaps I've already covered. If you have anything in particular, let me know.
As far as I know, a tail sitter VTOL has nothing special going on at all. You just sit a wing on it's winglets and give it full throttle.
@@MrD
no, tailsitter even hovers, ua-cam.com/video/qjZw4kXLobQ/v-deo.html
about mixing, I’m still trying to understand it, the Programing tab on Logic switches and it’s options and what they do + mixer tab, all options in inputs windows like GVAR and MAX and how they interact to each other, setting an idle up, flaps with up elevator, differential aileron,… just understood what was the “xxx stabilized+ and -“ I was looking for it all over, thanks to show us
Sorry English is not my first language!
No problem. To be honest, I don’t really know much about VTOL. I’m not overly interested in them if I’m honest. Most of them seem to be inefficient quads that turn in to planes with lots of extra drag. Though that tail sitter is really just a twin motor flying wing, which is a much better idea in my mind.
That hovering could be done with skill. In the same way that 3D pilots hover planes. But that video definitely looks like stabilisation is involved. I’m guess in they using angle and have set it up in that orientation. Otherwise angle mode would try to level the plane. How you would transition from that in to regular flight though, I’ve not thought about.
Its a cool concept, but for me personally, VTOLs just waste too much energy getting in to the air.
@@MrD I know, I was not interested as well, but it could be handy to FPV as we could takeoff from a tree crawled space and than just fly over it all,…
May be a mixer that allows a Bicol ter setting transitioning to airplane?
Hi Darren. Very good videos. Question: I have a glider without ailerons (ie only engine, elevator and rudder, three channels). Is it possible to use INAV to control this? What should I do in that case, change the aileron channel to the Rudder channel in INAV, or do I just leave Rudder and Elevator?
##I watched the video through again and answered my own question! Cheers again Darren for another great video! ##
Hi Darren. I'm using a SpeedyBee F405 FC and having trouble with S3 - left aileron. Is it possible to change this to say S5?
What's the mixer setup if I only use one servo in the middle to regulate 2 aileron left and right? One servo linkage to each left and right aileron.
I'm sure there is a mixer for a single aileron servo in the list. If not, you can just delete one of the stabilised roll lines
hi. Can S2 motor output be changed to servo output instead? i have run out of the servo out put for my pan and tilt headtracker
Hello Darren, and thank you for a very informative video. I have two questions:
1) I use Y-harness on ailerons to save an output servo. Do I get the same amount of stabilization with a Y-harness on one output servo as you get with a separate output servo on each aileron?
2) You made some examples of how to use the INAV Mixer as the mixer on your TX. How will the mixer setup be mixing the elevator and flaps to avoid "ballooning"?
Thanks 👍🏻
Using a Y harness will give the ailerons the same stabilisation. The problem using a Y harness for ailerons on a glider is that you can’t use crow breaking.
To combat ballooning, you could add a mix line to the elevator using the flaps control as the source. Check the direction is correct, then lower the weight down to something like 5%. You’ll need to adjust the weight depending on your airframe. So test with plenty of height.
Hey Darren, at 8:13, you mentioned putting climbing mode on a switch which would also require offsets. Do you have a video that describes how to set that up? I imagine that would be done on the radio mixer (not on Inav). Thanks.
The offset is so that there is more up than down. You'd just set that on the transmitter using weight or curves. There is a video on climbing mode ua-cam.com/video/6PZ83l5BcS8/v-deo.htmlsi=diU3o67cpz33chmu
Darren, thanks for the video. In a flight accident (bad crash) the ESC "+" S1 pad of a matek F405 - WSE was stripped and I am unable to weld back the ESC. Can I use the ESC "+" pad of Motor 2 instead? this way I would recover the FC that seems to be working for all the rest... thanks for your advise with this issue :)
Both the main power pads for the ESC are the same. So it’s fine. You can use S2 too if you need to. But you would need to add a 2nd motor on the mixer.
Thanks Darren ! That saves my FC to go into the bin 😊. I thought that the FC would not manage having one motor only on S2. Thanks again
Is it possible to swap S3 and S4? (same timer)
Hi, Darren let me ask you a question, pleaase. I hear from every side that it is not a good idea to do any settings on a transmitter side and it is recommended to do all in iNav. Well, think if do some settings working only in manual mode then in could be OK. All, settings done in my transmitter can be limited to a manual mode. What do you think? I would like to do some mixes/settings in my Tx. Thanks
It depends on what you are thinking about. But if it has anything to do with the control surfaces. It is best to do it in INAV.
@@MrD thank you for the response 🙂 I would like to control flaps on my wing plane in my Tx, it is easier. I do not want to do anything for other control surfaces. I used to have FPV camera connected to a servo and it was controlled via gyro. I used it for turns, so when plane turns to a side (ROLL) the camera moves to that side. I do not know if this can be done in iNav
I would do all the flap mixing in INAV.
There is a feature for basic stabilisation like that for a camera. I think it’s called CAMSTAB. I’ll have to check in INAV. But there is something that should do what you want.
@@MrD Thank you 🙂
quick question can you have motor brake for glider in inav?
No, you set that up on the ESC.
Do you have any videos showing how to use the mission planner in iNav configurator??
Hi Miguel. No, I don't have any videos on mission control. I don't use it as I don't really have an interest in flying waypoint missions. I do plan on trying it out this year though, so maybe that will change in the future.
@@MrD Thank you so very much for taking the time to reply...I'm very much out of new places to fly at... making it a bit doll... so I'm considering to start and have a few mission flights to visit a few places that are totally out of my video range.... but I still have radio.... hope you have a really great day!!!
No problem Miguel. Have you thought about changing antennas to get a bit more video range? What's your current setup?
@@MrD Wow... I'm a shame to recognize I didn't saw this video until a year later... "I DO" have probably a few of the best antennas money can get a hold of... but Floor noise where I live is a serious issue.. I even have a repeater to isolate noise from my own radio... but one does, what one can, with what one have....!
No mention of the Ridge Wallet....
🤣 I think they pulled out on the deal 🤣
Is there a way to map servos 1,2,3,4 to outputs 1,2,3,4 instead of having the first two outputs reserved for motors?
The reason I'm asking is that I'm repurposing an old drone FC (DYS F4 Pro, sometimes referred to as Omnibus), and it has exactly 4 PWM outputs for the ESCs but nothing else. Inav seems to reserve the first two outputs for motors (regardless if I delete them in the mixer) which leaves me with only 2 available outputs for servos instead of the 4 I need.
Anyone know of a solution to this?
No, you can’t remap in iNav. The pins are assigned in the target based on timers. Sounds like that fc would only work on a model with elevons.
@@MrD Hmm is there alternative software to inav that can do that? Perhaps betaflight?
Thank you either way!
Not really. I don’t believe BetaFlight can be used with fixed wing, and it doesn’t have any of the navigation. To be honest, the Omnibus and clones aren’t great flight controllers.
@@MrD Gotcha. Bummer!
Yeah I'm just using what I have laying around here. Wanted to get some practice in on cheap hardware before I go all out on a more expensive rig.
@@Chretze It would be fine with a cheap flying wing. That only needs 2 servos.
Should i be reporting the inav bug? So strange I have 3 f411wse the plane I fly the most using waypoints and such I have never had the bug happen. But the 2 brand new f411 wse with the newest baro spl06 baro both had the bug happen within the first 10 packs or so I use loiter and auto launch but fly them mostly in acro All are on 4.0. Reading the inav group I understand it's a well known issue just wondering if I should report it.
Which bug do you mean?
@@MrD yeah that might help. the random config change bug I believe it's called ln the inavfwg site. Changes the lpf filter and makes it wait for gps even when you have plenty of satellites.
I wouldn’t worry about reporting it. There’s already and issue for it. Someone actually spotted something the other day, which may be a lead. They’re looking it to it, so maybe there’s some light on this. It can be annoying at the moment. So hopefully this gets resolved soon.
I can’t even get into the mixer! INAV just basically freezes up. Board is a Matek h743 with the correct firmware and INAV 5
Do you have an SD card installed in the flight controller?
@@MrD yes I do. I finally got the board to work. I uninstalled the configurator and reinstalled it and everything is golden now!
Cool. Sometimes the SD card can be the issue. I was having stuttering in Configurator. Removed the SD card and everything was smooth.
@@MrD I tried that. The uninstall and reinstall fixed the issue. Thank you
Thats, what i always have to say to INAV....i need a video, to understand, how the mixer works...in case of bring in all that new blinky features, u should make INAV much more user friendly first...
To be honest, It's not really user unfriendly. Mission Planner is far worse. There were a few things that could have been improved, that now have been. I think the biggest confusing thing left now is the "helper" image. If people look at that, they can wire the servos incorrectly. That's why it's important to use the table, not the image.
I wonder if there is ever a comment from you anywhere, where you are not complaining about something. INAV has the EASIEST way of Mixer setup of any FC system I know of. If this is still too complicated, you are clearly in the wrong hobby.