OpenTX Taranis Throttle Limit on Side Slider

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In this video, I'll show you how to use OpenTX on your Taranis to put a throttle limit on the side-slider potentiometer. This lets you scale the throttle of your quadcopter up and down in real time as you need it. I'll also show you how to lock that function to a switch so that you don't accidentally limit your throttle when you don't want to.
Here's part 1 of this series: • Betaflight OpenTX Thro...
CurryKitten's video about rates on a switch is here:
• Using Betaflight throt...
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[@donknoles3142]

I have tried everything but I am still not sure what to add as the weight and offset on both lines that you added and did you change from add to multiply on both lines that you added

[@JoshuaBardwell]

Here is an overview of what the three mixer lines should be: CHx:IThr Weight(100%) *= S1 Weight(50%) Offset 50% += S1 Weight(50%) Offset -50%

[@gregorpesek]

@@JoshuaBardwell *= S1 Weight(50%) Offset 50% you skipped that part and it was really frustrating me, please put some anontations in the video :)

[@donknoles3142]

@@JoshuaBardwell Thanks that fixed it

[@donknoles3142]

@@JoshuaBardwell Thanks for the help

[@s3x5hun8]

Goodness glad I wasn't the only one. Should have refreshed the comments and checked before I added mine.

[@clivegalway2675]

Thanks for the video! I think I found better settings. Allowing the power to go all the way to 0 seemed risky - if you accidentally dial all the way down mid-flight, you will crash. So I came up with these values: *= Weight 25, Offset 75 += Weight 25, Offset -25 This makes minimum on the dial cap you out at 50% power, with the detent being 75%

[@JoshuaBardwell]

Hmmm check the 1st comment pinned at the top of this comment section. I basically do the same.

[@chrishendrickson4913]

Yes! Perfect! Utilize more of the pot. I did this adjustment myself too.

[@ArchmageAU]

Thank you for the credit. Hope this helps a lot of people.

[@jemo_hack]

Where is the link? ;)

[@CurryKitten]

Thanks for the shoutout Joshua, very kind of you. I enjoyed watching you work through your throttle sliders, you were definitely "in-the-zone" there :)

[@doktordrone]

i learn from all of you, thank you very much, best wishes :)

[@RcReviewsLt]

That feel then something works as you expected is priceless in this hobby :D

[@PEZ_FPV]

The first video got me wanting more JB OpenTX tutorials, this one proves we NEED more!

[@michaelclark5757]

Nothing wrong with Geeking Out on the open TX! The fact that you pulled that off the complicated way just shows how well you understand the program.

[@propwash6880]

Thanks! My Mobula7 is so much more fun indoors now. I leave my slider at +17 on max throttle now and it is plenty of juice inside. These settings make it my favorite indoor whoop now. Can still do flips no struggle. Get better flight time too.

[@IsEnKiReK]

First of all: thank you for your work! Your channel is always very helpful and gives a lot of interesting ideas, on how to set up a quad and everything around the topic. Concerning your throttle-modification: There is actually a simple Formula for all offsets and weights, if you want a custom throttle threshold at the lower end of the slider. For example the throttle will go from 20% to full, or from 40% to full (as long as the throttle stick is at max) (100% - ) / 2 = Weight1 1 - Weight1 = Offset1 Weight2 = Weight1 Offset2 = - Weight2 Weight1 and Offset1 are for the multiplying mixer (which must always be first) and Weight2 and Offset2 are for the adding mixer (which is always second) Following are some examples: Max throttle range: 0% - 100% CHx: IThr Weight(100%) *= S1 Weight(50%) and Offset(50%) += S1 Weight(50%) and Offset(-50%) Max throttle range: 20% - 100% CHx: IThr Weight(100%) *= S1 Weight(40%) and Offset(60%) += S1 Weight(40%) and Offset(-40%) Max throttle range: 40% - 100% CHx: IThr Weight(100%) *= S1 Weight(30%) and Offset(70%) += S1 Weight(30%) and Offset(-30%) Max throttle range: 60% - 100% CHx: IThr Weight(100%) *= S1 Weight(20%) and Offset(80%) += S1 Weight(20%) and Offset(-20%)

[@mrbutchee1]

Thanks Josh, when I flew helis. I did a throttle hold at 100% or 75%. This allowed me to do flips, tick tocks and barrel rolls while not having to worry about throttle control. But at that time I did everything on a Spectrum controller. Now I am moving over to the jumper t12 plus with opentx. And your explanation helps out. Never having felt with opentx before.

[@AngryPepper1964]

Sorry Joshua, but at 16:15 I was lost. I’m really happy with the first way you put the adjusted output on a switch. Easy, peasy, and best of all it works. Thanks for that.👍

[@racerat]

Searched for this and knew you'd be there somewhere. Thank you!

[@seewell8168]

This is probably my favourite video of yours so far, the absolute joy at the end is worth all the work. I used method #1 but still... worth it.

[@kreech68]

Hi Joshua/All, I am in the situation of trying to calm down the Emax Tinyhawk II Freestyle to be able to fly in the backyard, so I Googled how to set a throttle limit, and I found Oscar's page, which references your videos, and you reference other videos. I decided to follow your Global Variable scenario that sets 0 to 100% tuning on the throttle, but I added another step that I think will help with the tuning of this useful feature. (because 0 to 100% max throttle tuning is probably overkill!!) I took your two slider-based input channels, and added a CURVE to them. I set CV1 to to be a 2-point curve to "bound" the OUTPUT of the slider (that goes INTO your two gain and offset channels). For example, if the CV1 is tuned to -50% to 50%, then the same 0-100% math from above will be tuning the max throttle from 25% to 75%. That's still a big range, but it is EASY to go bump around the endpoints of the 2-point curve. I tuned to the range to 30-50% throttle (a bit lower than "1S"), and found during the first few seconds of flying that 30% was too low, but moving to the middle detent on the slider set it to 40%, and that was controllable. I'll fly for a while at the middle detent, then bump it to the top when I feel better at being able to keep it inside the yard! And, it is easy to bump the CV1 up at bit as I get more comfortable. (20% up on both endpoints moves the range up by 10%, etc...) NOTE: The "hovering point" will be notably higher with this throttle limit, and notably larger throttle stick motions will be required than with the standard linear throttle out of the transmitter. I hope that this helps some people! And, I want to express my sincere gratitude for all of the work that you/Joshua does on all of these videos. Sean

[@xtkfpv5306]

There is a step missing from this video when I followed it exactly my slider also affected my throttle low such that it would not go to -100%. To fix this I added on the first line a weight of +50% and offset of +100%, this does 2 things. 1. it only limits the high throttle limit but allows you to go to -100 for low throttle 2. you could use 100 wieght and 50% offset as well to fix the low end problem but it makes the pot too sensitive to adjust and if you bump it a bit too much your throttle inverts so the setting of weight 50 offset 100 desensitizes the pot. Warning if you ajust your pot over the 50% mark your throttle will only increase up to 50% and if then it will start to go negative again, net result is you wont be able to take off at all and if you bump it in flight your going down. This is a cool thing that taranis can do but I think it is safer to just add a line on the throttle mixer, set the weight and offset and expo to what ever you want your limits you like then tie it to a switch. I like to use self leveling mode on my tiny whoops when flying indoors but then switch to acro for outdoor freestyle on my 2s betafpv whoop so I will set the limit to only activate when I am in self level mode

[@ChristianPetri]

The confusion comes from: 8:51 where the weight was first 100 and after a jumpcut it changed to 50 😁 (As seen here: 10:11) CH3 I 100 Thr *=50 S1 +=50 S+ ----------------------------------------------- **=50 S1* → Source: S1 Weight: 50 Offset: 50 (Optional: Switch: SC-) Multiplex: Multiply *+=50 S1* → Source: S1 Weight: 50 Offset: -50 (Optional: Switch: SC-) Multiplex: Add

[@MichaOmelan]

@@ChristianPetri this comment should be pinned on the top! BIG BIG THANKS!!!!!

[@bauke86]

The great thing is that this also works when using the taranis as a HID input (joystick) in the simulator. I find it so much easier to do laps. I can increase the slider a little bit each few laps as I get used to the speed.

[@UKantTouchMe44]

Just wanted give you “props” hehe on giving a fellow youtuber credit and traffic. -50 pride + -50 traffic = +100 Respect. 💯👍🏼

[@frankbarajas]

It's actions like yours in this video that makes this such a great community to be involved with and to see an inherent collaboration, cooperation and mutual respect for all in bettering the hobby. I really appreciate the shout-out to CurryKitten. Well said and well done.

[@frankbarajas]

@@CoppertopFPV - I don't recall Nick covering this on the Mobula but I don't doubt you, he probably did. Also, JB has done a video promoting Project Mockingbird previously so where's the issue? I don't consider what CurryKitten or JB doing as "parroting" and *see no problem in them showing slightly different or even similar solutions and opinions, there isn't any ownership to an idea on how to fix a problem,* he was merely acknowledging a fellow content creator's solution as being correct and that he made an error. Besides, we can easily agree that not everyone subscribes to both of these guys so what the problem? We all win here. Everybody and his mother covered the various releases of the Mobula7 so are they all "parroting" the first guy to do a review? I think not. Besides, knowledge is worthless without being shared. We all share the same love for the hobby, right? Relax, take a chill and go fly. Peace.

[@JordanMW]

This is awesome, the capabilities of the Taranis are endless. My X9D and Tyro109 kit will be here on Friday. This will also make me much more comfortable flying at first, being able to scale the throttle like this.

[@MadDragon75]

The happiness of success. It's priceless. Regardless if there is an easier way to something. I can use the left roller for volume and the right for throttle cap. Thanks for making this video JB. 🤜🤛

[@pippifpv]

When ever I see how complicated open tx and the 6 button taranis is, I love my good old simple flysky i6 radio. Works perfect for a mini quad.

[@madpoet]

hmmm, giving me a few ideas on doing likewise on Deviation. Time to play around and hit the boards to see if anyone else worked it out yet. Thanks for the video dude!

[@Crix4evaTnT]

Hey JB after watching your tutorial on freerider acro flying just after 2 days of flying in acro mode i'm much better still a few crashes but getting more better thank you so much for your tutorial in acro mode

[@JoshuaBardwell]

Awesome glad to hear it!

[@M0rdH0rst]

I just got mine and I have to say, flying it indoors with the lose sticks of the Nirvana, it is a challenge, but it also is a lot of fun :) Can't wait to get it outside.

[@weevilinabox]

I don't care if your method is "stupidly complicated". It's worth making the effort to understand. Kudos for showing us how you thought through the problem, rather than just presenting a solution. Seeing this steers folk toward a method which can be applied to a whole range of similar solutions, rather than just fixing this one issue. And it was uplifting to see the joy of solving it. A stark contrast to yesterday's outro, which had all the hallmarks of man spending too much time alone :-) I'm a techie guy who's just getting into quads...and wishing I'd done it years ago. KZbin searches on any quad-related topic worth knowing bring me to relevant videos on your channel. You earned my sub a while ago, but this video has tipped me over the edge: you have a new patron.

[@k.t.overton1525]

I did this on my Radiolink at10ii on a three position switch with three separate throttle rates. Easy to set up on the Radiolink.

[@neXt-sim]

You are a genius. The solution with weight and offset with global variables is the best throttle limiter solution! (In your video from 13:20s)

[@SOLARFPV]

What a great follow up Josh. After watching the 1'st video, I was thinking about a variable throttle like this. I really liked the special functions and global variable stuff your doing, it kinda makes sence, and it is nice to start using those extra features. Don't worry about your throne, you sit hard in it. Lol.. Game of Drones.... sorry that was daft. Have a great day, and thanks for the link to Curry K.

[@PilotoZ]

So cool! Following the steps, it’s a little bit easier in the Nirvana. Thanks for the tip!

[@iDocSonic]

Excellent! As someone who has little time to figure these things out, but loves to fly. I really appreciate your channel. Awesome giving CurryKitten credit.

[@danwedrat2783]

Hahahahaha the second half of this video is the best lol. So excited with your win 😂😂

[@MaxBeamer]

I wasn't really paying attention i better watch it again incase there's a pop quiz :)

[@richardgillingham1703]

You don't need two lines adding to the mixer, you can apply a curve to the first line to control the offset and weight across the -100 -> 100 x range

[@nonplayercharacter9653]

Very useful! Now I wonder how you could do it so that the slider only adjusts the endpoint between say 50% and 100% to give you more slider resolution.

[@JoshuaBardwell]

Definitely you can do that! The first mixer line, the multiply line, basically is turning the -100 to + 100 output of a normal channel into a multiplier of 0 to 100%. So you would want to change that to a 50 to 100 instead of 0 to 100. I think in order to do that you would use weight 25 and offset 75% but I haven't tested it. Then you would need to conversely modify the second line.

[@hoskoau]

thats the way I have mine working, I made two mixes, one with weight 25 and offset 75, the other with weight 25 and offset -25. The first mix goes from 50 to 100 which will be used as throttle weight and the second from -50 to 0 used for throttle offset. I feed these to global variables which are entered into a second throttle mix, set to replace and on a switch.

[@wardy1786]

This is perfectly what I was looking for. Thanks fellas. Can it easily inverted? I want the switch to roll the other direction for 50%-100%

[@TobsterGO]

@@hoskoau thanks. This is much better. 50 to 100% throttle. Rather than 0 to 100%

[@ChristianPetri]

Someone has certainly already written this in the comments: With the settings below: _You_ _can_ _use_ _the_ _full_ _range_ _of_ _the_ _dial._ _The_ _quad_ _arms_ _with_ _any_ _dial_ _position._ In the Video are the same settings: 10:11 The confusion comes from: 8:51 where the weight was first 100 and after a jumpcut it changed to 50 😁 (As seen here: 10:11) Here are the *mixer* settings so that the function behaviors is the same as when it would be set manually in the *input* panel: (As seen in the first video from Joshua) and you are able to *use the dial to change the throttle limit.* CH3 I 100 Thr *=50 S1 +=50 S1 ----------------------------------------------- *=50 S1 → Source: S1 Weight: 50 Offset: 50 (Optional: Switch: SC-) Multiplex: Multiply +=50 S1 → Source: S1 Weight: 50 Offset: -50 (Optional: Switch: SC-) Multiplex: Add _______________ __________________________________________________________________________________________________ *Explanation for the settings* Requirement: 1)Throttle: From -100 to "Whatever max throttle value I want: Between -100 and 100.” 2) If the throttle stick is moved to the lowest position, it always has to be -100 (otherwise the quad might no arm) Please see for a visual demonstration: www.geogebra.org/graphing/szmvbtpf y=mx+b (linear function aka straight line) x → Input Throttle value y → New throttle value (m → How “steep” the slope is) (b → where does the line cross the y-axis) Dial: 0% to a 100% --> DialValue: 0 - 1 General formula: y=DialValue*x + (-(1 - DialValue)* 100) Example Dial is at 80% (DialValue = 0.8) y=0.8*x + (-(1-0.8)*100) y=0.8*x + (-0.2*100) y=0.8*x + (-20) y=0.8*x - 20 Input max throttle value = x = 100 y=0.8*100 - 20 y=80 - 20 y= 60 Now the max throttle value is 60 Input min throttle value = x = -100 y= 0.8*(-100) - 20 y= - 80 - 20 y= -100 Now the min throttle is still at -100 Throttle: -100 to 60, this fulfills the requirements Other percentages with their range 60%: -100 to 20 50%: -100 to 0 30%: -100 to -40 _______________ __________________________________________________________________________________________________ How that this relates to the settings *y=DialValue*x + (-(1 - DialValue)** *100)* Dial has to go from 0% to 100% (a dial goes normally from -100 to 100) *DialValue*x* *=50 S1 → Source: S1 Weight: 50 Offset: 50 (Optional: Switch: SC-) Multiplex: Multiply Starting point → -100 to 100 When we add weight: 50 → -50 to 50 When we add an offset of 50 → 0 to 100 Our Dial now goes from 0% up to a 100% (DailValue: 0 - 1) *+ (-(1 - DialValue)** *100)* +=50 S1 → Source: S1 Weight: 50 Offset: -50 (Optional: Switch: SC-) Multiplex: Add Math something something: Starting point → -100 to 100 When we add weight: 50 → -50 to 50 When we add an offset of - 50 → -100 to 0 The value goes from -100 to 0 (For some reason the values here are treated a “whole” numbers and not as “percentage” It adds 50 (and not as we would expect from the multiply function 0.5). That is why we have the "* 100" in the general formula) How far down the function has to move so that it goes through the Point (-100,-100)

[@hirschkopfseinvater7636]

Wow, that's so helpful!!! It's awesome what you're doing!!!

[@rotorismo]

!SC-UP is recommended value for the switch.

[@asafmagen]

it could come in much better time. i was just looking for this kind of tweak. thank you very much!

[@dangermaine4739]

That's cool.... so you used the percentage of the slider with you're stick power of %100.... but you change you're slider % to change the value of you're % of the stick control. or whatever the stick variable is of the slider. Good job good job.

[@walterunt]

To limit the throttle from 60% to 100%: CHx:IThr Weight(100%) *= S1 Weight -10% Offset 110% += S1 Weight 50% Offset -50% (You don't really want to limit the throttle to 50% or less.) For other values, different from 60%, sum of weight and offset from the multiplier must be 100. (*=Weight -30 Offset 130% for 80%) Also found more elegant assigning it to the potentiometer.

[@MrBennPBMWC]

Very cool! Thank you man, love learning something from you most days!

[@asian_raisin]

I did this to the Jumper T8SG. It's not exactly the same process but very similar especially with setting offset and assigning switches.

[@noramas.]

Chansook Saechao could you please share ini file contents for T8SG

[@asian_raisin]

@@noramas. I never got that far into learning about the T8SG and configuring it using an .ini file. It was sold a while ago when the QX7 came out.

[@villadseskesen]

Hey! Just wanna tell you that i appreciate your work.

[@bobbfwed]

If you want the slider to adjust between 66% and 100% (for example, to get 4S throttle response on your 6S quad), this is the settings you want: CHx:IThr Weight(100%) *= S1 Weight(17%) Offset 83% += S1 Weight(17%) Offset -17%

[@hoskoau]

Actually after playing around with both ways @Joshua Bardwell way is much better. The quick way creates a throttle cut when at zero. Fine if this is what you want but not good if you are just trying to scale back the performance of a quad. The JB way means you can configure it so that when the slider is at -100 the max throttle is 50% and as you increase the slider it scales up to 100% throttle. I made two mixes, one with weight 25 and offset 75, the other with weight 25 and offset -25. The first mix goes from 50 to 100 which will be used as throttle weight and the second from -50 to 0 used for throttle offset. I feed these to global variables which are entered into a second throttle mix, set to replace and on a switch. I couldn't work out how to do this the elegant way.

[@JoshuaBardwell]

You can easily adjust the mixer method to only go to 50%.

[@hoskoau]

@@JoshuaBardwell the maths was too much for my tired brain. The other way was done in 2mins

[@JenovaDragon]

Love your videos Joshua, but it would be really cool, especially for videos like this, if you had a TL;DR section at the end. Follow along if you like, skip to the end to get what I did in "copy/paste" screens.

[@army2408]

thank you Joshua! i finally got it worked! thank you for your great work!

[@danielmcdonald8149]

This is great for adjusting for my 6 and 8 year old.

[@bigds7208]

Fantastic...high hopes for my next flight. Thank you sir

[@TheQwikset]

I know this is an old video but I like the concept. I did the throttle cut easy way on my jumper t16 s1 pot. It works fine however it only works from half way point to wide open. I think your method to adjust it in global variables is better and I would like a better instruction. Do you have another video or know of anyone else that has one. I don't really understand the radio functions as I am new to this.

[@NBATIPS]

wow thanks i have a flysky fs i6x and it is a little dif but got it to help on DRL sim thanks

[@peterquigley2700]

Thanks Joshua this was great I definitely learned something and saved myself some money too.

[@davidsagal]

Nice vídeo. It has been what I was waitting for. Very clear answers to my first questions for you. Thanks a lot for your interesting in newbie. Bests Teacher.

[@Sylo2Nice]

Thanks josh. You deff read your comments. Good looks on that fam

[@JoshuaBardwell]

I read my comments for sure.

[@daggergtfpv]

Nice work JB! Keep up with the great ideas!

[@wicked1706]

I really enjoyed learning this! Thank you!

[@RichMoore-tweakin7376]

Lol... 435 likes. One of JBs most important vids.. Definitely stop at 20 minutes though.🤣 THX JB!!

[@masterrc_student4259]

Thanks JB! worked like a charm!

[@RCThis]

Indeed I HAVE LEARNED SOMETHING. Thanks!!!

[@madfictionfpv8246]

Can you add a note to the video for the multiple line. Took me forever to figure out what I was doing wrong. You never mentioned to change the weight and offset in the multiple line.

[@JoshuaBardwell]

The pinned comment corrects this.

[@madfictionfpv8246]

@@JoshuaBardwell thanks, forget to look at the pinned messages.

[@kenjefpv6820]

Strong work, JB!

[@Rikirock656]

amazing video! OpenTX is such a geeky toy

[@anthonyr6555]

Manual control of headless mode. it seems as if it were a plug-in. while figuring an emulated controller

[@georgrouk]

Hey Joshua, nice video. When you adjust the throttle you don't affect the muscle memory? I think you will not fly always with the max throttle 75%. I would like to ask you for some advice for the throttle setup for newbie flying in underground parking with 2.5m height with 5inch quad! Thank you for your help, keep doing the good job!

[@gmivisualsjason3729]

This is brilliant JB..... Thank you

[@gmivisualsjason3729]

However now that I've worked through it and read the comments it's very confusing for a complete beginner like me perhaps an updated video would make it easier for us to copy.

[@NanoG5Kite]

Hi Joshua, I tried this settings and it is working - almost... Joshua Bardwell Here is an overview of what the three mixer lines should be: CHx:IThr Weight(100%) *= S1 Weight(50%) Offset 50% += S1 Weight(50%) Offset -50% However, turning my left slider has only influence half the way turning it - on the middle position I have then already 100% throttle, turning the slider further to the upper position has not any further influence. Have I overseen anything? Best regards from Germany, I have booked your great channel!!!

[@JoshuaBardwell]

Those three mixer lines should absolutely do the trick. If you're not getting the desired effect, maybe something else is affecting the channel.

[@NanoG5Kite]

Hi Joshua, I got it - thanks! When I updated my 9XD I did the Stick calibration, but the Slider was not in middle position during this procedure. So I recalibrated the Sticks including the Sliders and Potis which fixed it now. Best regards from Germany!

[@MCsCreations]

Fantastic, JB! Thanks a lot!!! 😃 And yeah, nerd squad here!

[@doktordrone]

thank you very much, i learn something today again :)

[@gibson7289]

its been awhile,can you do a refresh on this vid?

[@thomatofpv3546]

I have a very power hungry 3 inch (1408 4100kv + 3052) and when I jam my throttle to 100% it always sags to below 3.4 within 2 seconds. Yeah 80 amps is hard on 850mah batteries haha. Anyway, this is a nice thing to have for me! Thanks for the vid

[@alanjones4747]

Hi Joshua, you missed a step, your multiplier was set to 100%, then as you put the addition item it’s set to 50%

[@JoshuaBardwell]

Please check the pinned comment at the top of the comments section.

[@alanjones4747]

Thanks, I just found it. Excellent advice as always.

[@OynxBlack]

Do we have a video for throttle limit on the Jumper T16 Pro sliders? Also, I bought a toothpick quad that is way to sensitive. How does one turn down the sensitivity/power on the yaw, pitch and roll on the Jumper T16 Pro?

[@JoshuaBardwell]

Don't reduce rates in the radio to make it less sensitive. Reduce rates in the FC. Lower the RC rate if in acro mode. Lower the Angle Limit if in Angle mode.

[@RYVENANT]

Can you set JUST a switch (let's say on a Tango 2) to have finite values? Like position UP = 100%, Mid position = 75%, Down = 50%

[@davidsagal]

But why would you the LeftSlider way down and throttle capted at zero? And how should I set weigh and offset if I I would cap the throttle to 80% instead at 50% ? Should be something like this? CHx:IThr Weight(100%) *= S1 Weight(80%) Offset 80% += S1 Weight(80%) Offset -80%

[@DroneMaverick]

7:29 Here's the EASY way

[@luv2flypilot]

Thx, another great video 👍🏻 I am a FPV newbie and have enjoyed watching your videos to help me set up my Taranis QX7, Betaflight, etc . Because I feel you have helped me quite a bit, I just subscribed to be Patreon to help support you monthly. The tiny whoops have interested me the most since I can fly them around my house on rainy days. Yes, it does actually rain in California too 😳 When I can’t drive to my hangar, strap in my parachute l, and go fly the aerobatic airplane I spent many years building. I program, ness with tuning, and fly tiny whoops around my house. I was thinking it would be awesome to be able to set one of my dial potentiometer switches on my QX7 to set my throttle percentage since these new 1S/2S tiny whoops are a handful for my beginner fingers. I was also wondering if someone tech savvy could possibly create Amber sound files that sound the percentage your dialed to say every 10% percent. Maybe bottom of the dual is 50% then Amber would sound out at each 10% increments. Is this something you could help me out on? Luv2flypilot ✈️

[@JoshuaBardwell]

The way to do this is create a logical switch that is true when thd slider is at a certain value. Then create a Special Function that plays the sound file when the Logical Switch is true. Search my channel for "read out voltage" for more information.

[@SirPoonga]

On my xlite I could not get that first technique to work. When slider was at one extreme the throttle happened normally. When the slider is at the opposite end it goes from 50% to 0% - In\verted throttle. So for now I have a logical switch triggered by the slider. Added a replacement throttle in the mixer that is triggered by the logical switch. That will set the throttle to 75 weight and -25 offest.

[@JoshuaBardwell]

CHx:IThr Weight(100%) *= S1 Weight(50%) Offset 50% += S1 Weight(50%) Offset -50%

[@JoshuaBardwell]

That's the full formula.

[@SirPoonga]

Cool. FYI for everyone else, this makes the slider go from 0% to 100%. I think I can figure out how to have it go form 50% to 100% from here.

[@ChrisCroft]

SirPoonga as I could not get in to work directly on S1 on X-Lite, I made follow changes. On inputs I created a new input on S1 with weight of -50 and offset of 50. Then on mixers tab I used this input instead of the direct S1 input with the other settings the same as listed above. This makes the slider all the way to left limit throttle to 50% and when all the way to right 100%.

[@Kinl23]

@joshuabardwell I'm pretty sure this part is missing from the video "S1 Weight(50%) Offset 50%" timestamp 8:15 - 9:50... 9:58 cuts to both channels with weight and offset...

[@JoshuaBardwell]

Please see the pinned comment :-)

[@786free1]

Thanks but why can't you just add another line in the input screen under throttle and change the weight to 50% and add a switch to that? Why does that not work, especially if all I want is 100% throttle or 50% throttle?

[@PeterKornum]

Can you make the throttle curve setup on taranis to work on all the models you have in the transmitter? Like you did in an earlier video with adjusting the volume???

[@JoshuaBardwell]

No, there's no way to do this globally.

[@xch3no2]

For me it was as stupid simple as adding a line to the throttle channel in the mixer with S1 as the source, instant auxiliary throttle control. This gives me an adjustable "airmode/idle throttle up" when the knob is above 50%, gives me an adjustable throttle limit when I turn it below 50%. You can put it on a switch if you need to, I don't.

[@mattpreston2163]

Hi joshua. I've tried to follow numerous times to copy the simple solution for throttle limit. My qx7 only has a pot and not a slider and doesn't produce the same result. Any ideas as I could make good use of this feature. Thanks Matt

[@JoshuaBardwell]

Check the pinned comment at the top of the comments section. The video left out a key parameter by accident (sorry).

[@curtisruin9307]

Same here!

[@xch3no2]

Matt: Simply add a line to the throttle channel in the mixer and select s1 as the source, then you can turn the knob below 50% for a throttle limit & turn it above 50% for an "idle-up or airmode" effect. It was that easy for me.

[@mattpreston2163]

Thanks for the update. Tested the amended formula, works a treat. I learnt something after all. Thanks also for the alternative method offered by somebody

[@d.8362]

Great Video Joshua. Is there any way to tie the Angle Limit to the same slider? Or a three way switch? Seems I can only do it in the OSD and it would be much better on a switch or slider. Thanks

[@JoshuaBardwell]

Take a look in the config dump and see if the angle limit is in the rateprofile section. If so, then Curry Kitten method will work.

[@bugsysiegals]

Thanks for sharing, love this slider mod with switch enabled. That said, I was looking at this when considering to do 6S on 2200kV motor and I believe I read that if you do this within the TX rather than within BF using throttle limit “scale” setting, if things go AWOL, the FC can still hit max throttle so it was suggested not to make it work through the TX but rather setup BF to avoid it hitting max throttle ... is this true? Any benefit of one over the other?

[@RotorBotz]

Need to setup a slider switch on a X9D to act like a throttle channel. Wish to connect esc to channel with slider in order to connect to an esc then to a servo motor powering & controlling a winch. Thanks for any help in advance!!

[@joelong6085]

Great video thanks .

[@MaxBeamer]

sidenote: use 2 switch arming so you wont change throttle on accident.. so flip switch, then rotate for throttle adjustment.

[@rotorismo]

or use !SC-UP value for the switch

[@michaelwesley811]

Would be interesting to run 6s on 2300-2600 kv motors but set trottle scaling to 67%. Could this result in similar performance, amp draw and flight time, of a lower kv motor setup?

[@dionisoisback8235]

Thank you for your video. I followed all your steps and I checked it with drone, it definitely works, but I've found two problems: 1) The dead band exponentially increases 2) The LS switch it's extremely sensitive, that means when I try to arm the drone, I accidentally touch the LS switch while I'm flying or about to fly, so it's very hard to get use to it when we're constantly changing its position. I tried using the S1 switch, but that way I can only move half the range length, I don't know why. Is there a way to have the full throttle length with the S1 switch?

[@JoshuaBardwell]

If the LS switch is too sensitive, re-run the stick calibration in the radio. Make sure to move the sliders and pots to their full extents -- but don't squeeze them hard at the ends of the travel, just gently touch the end of the travel.

[@dionisoisback8235]

@@JoshuaBardwell Thank you!

[@wlguasch]

Do you have a way to do this for Specktrum Radios?

[@fpvwing]

SEE COMMENTS, JB GIVES THE CORRECTION. NB, THE ORDER OF THE EXTRA LINES matters.

[@CgitEinsteins]

Hi JB How to make servos move itself with taranis ? im use qx7

[@JoshuaBardwell]

This is a bit of an open ended question depending on exactly what you want to do with the servos. What are you trying to do?

[@CgitEinsteins]

thank four your reply btw i like your videos really helping me alot i dig internet but still cant find how to make servo move itself my plan is to test how far receiver non rssi can reach max range i will bring servo, receiver and fpv cam face move it self servo fly with my gps drone if servo stop move that limit range receiver

[@JoshuaBardwell]

github.com/betaflight/betaflight/wiki/Servos-&-SERVO_TILT-for-3.1

[@ryanmaynard256]

Hey JB I don't have multiplex on my Taranis for some reason

[@dario_hxc]

Hi JB! it didnt work as the "simpler" method. I think you skipped some steps. If you check the videos you can see that values change in the screen, some say 50 and in the next step they say 100 and viceversa. I followed all the step and the channel goes both ways from -100 to 100 increasing equaly. I assume the throttle only should go from 0 to 100, but as I told you mine goes from -100 to 100, so if I move the knob, the quad wont arm. Any thoughts?

[@JoshuaBardwell]

Please read the pinned comment thread which has a step that I accidentally left out of the video.

[@dario_hxc]

@@JoshuaBardwell I don't know what I am doing wrong, but I have the exact same problem. I've seen this video for like 10 times and now I figured that you add a "GV2", you didn't show how to do it and when you add it it worked for you. So sorry for being such a n00b!

[@rfournerat]

When adding this or similar features, do we incur latency by employing this type of approach? If so, is the additional latency significant? Or taking a tangent, could we minimize command processing latency by removing any features similar to this (yes, reducing functionality), in addition to bypassing the input section and having the mixer take input directly from the sticks and switches? Inserting a little into what you said, it seems that OpenTX has a lot of features that quad pilots many not need. Could a streamlined and minimized quad specific configuration reduce command processing latency from the default settings?

[@JoshuaBardwell]

Processing latency is almost completely negligible. The main latency comes from the command link between the transmitter and the FC, from the filtering (inherent to filtering), and from the ability of the motors to change speed due to their own mass.

[@Kman568]

im guessing these settings only apply to the model selected and not all binded quads? p.s i have the same shirt

[@JoshuaBardwell]

They apply only to the active model.

[@jaksmith6465]

was wondering about something like this for when I swap 4s and 6s. Would this have to be on a Taranis or could you set it on a Tang2 wheel?

[@BrianMikasa]

How do you do this on the qx7 which doesnt have the option for multiplex?

[@anthonynicholson5725]

So jus so I know I’ve got this right (still newb here sorry guys lol) at 50% looking at the throttle movement it should show -100 to 0 correct?

[@thomassinger5613]

hy. could you make the video for the jumper? with the best way

[@JoshuaBardwell]

It's identical for all OpenTX radios. The menus look a little different but the options and steps are the same.

[@thomassinger5613]

@@JoshuaBardwell and whats the best way? The Last one?