This arm-switch setup is dangerous, and you shouldn't use it 

but he can also flip the disarm switch in midair and the quad will disarm the second he goes for a dive and lowers the throttle under -95 haha, so a sequence on top of that would be the best, that you can only disarm when throttle is low at first and then the switch is flipped

Bardwell's channel is one of the very few gems in the RU-vid FPV space. Another very useful video.

If you are concerned about accidently disarming, then you need to move your arm switch. Its why I don't use shoulder or corner switches because that is where my fingers rest on the radio. I use the switches above my index fingers, which are obviously on my sticks if I am flying. Have to take my finger off the throttle to disarm.

Excellent, as usual. I was thinking of duplicating a 6 (in this case 5) position switch on the Zorro using a pair of 3 position switches. Obviously, there needed to be a logic switch involved (to disable one switch when the second is activated) but I knew practically nothing about using them. This video gave me a one-stop solution to the necessary conditions and function of logic switches, especially "sticky" switch use cases. Great work, JB, keep it up. Doubtless there are many permutations of logic switches this video applies to... ...not just dangerous arming modifications! Yea! Solved!

I’ve been flying quads for 7 years. I’ve literally only accidentally disarmed once, and it was a marginal case where I panicked when I didn’t need to actually disarm. Cool logic and I love my momentary arm switch, but a two-part disarm is a bad idea.

I think it's a goofy idea but i love the transmitter set up and experimentation. I use this tx for my long range fpv and my RC helicopters!

Wow... absolutely brilliant. Thank you.

I have the arm switch setup to only engage, when the momentary switch (TRN) is held at the same time. Disarming is the unaltered, to allow quick disarming. While I only added this after accidentally arming a quad while carrying it, it has prevented accidents since then.

Love when you do the acting. Always awesome

Trying to make a simple armed and disarmed switch and htx 2.8 thank you for the help

In my experience, FreeFly multirotors have something similar - you cannot disarm the aircraft unless you have the momentary switch pulled up. This is because when you’re flying an aerial platform that is potentially carrying $50,000+ of camera equipment, accidentally disarming - especially when you might be flying over the people/things you’re filming - can actually be more dangerous than being able to disarm immediately. Of course, this is a completely different scenario than a typical 5” quad will fly in, but that is one pretty good reason to have a setup like this.

Pretty interesting indeed, Joshua! Thanks! 😃 Stay safe there with your family! 🖖😊

Dude, these intros are getting better and better! :-)

I have actually done something similar for all my Jets, Ducted fan, Gasser and Glow models my setup is the opposite of this though, with the throttle low arming is by pulling the momentary sw for about 3 sec while the arm sw is in the armed position, disarm is instant and not tied to the throttle, stops you accidentally arming a model with the throttle open a bit

My second time out with an FPV quad (Rekon 3) I found myself with WAY more altitude than I wanted. Some part of my brain told me to disarm my quad to shed some height.. somehow I established the presence of mind to re-arm my quad as I was tumbling from the sky, and by some miracle I must have been close to level when I got the arm switch flipped because I actually leveled out (horizon mode) and was able to resume flying. No, I did not remember to turn on my DVR before this happened and yes, I am really bummed about it because I hardly believe it myself.

THIS was actually what happen way waaaaaayy before years ago... until everyone else considered this "unsafe".

That intro is cool. 👌

Also i wonder if JB has two controllers, One for himself to fly. One for him to show people how to program every situation possible. Hes truly helpful and informative. I guarantee there will be an informative video for new comers. I know for a fact he will take on any tech challenge I firmly believe he does this for his love and passion to see fpv grow. WITH ALL THAT SAID, THIS IS HIS FULL TIME JOB/ and I personally believe he out works his compensations.

there is no need to make 2 arm switches incase you disearm in the air.... lmao go into the config and make it to where you can arm on any unlevel axis and then if you by mistake disarm you can still arm weil in the air or falling

I actually setup a double physical switch arm and disarm for all my machines. I put the left switch (same as JB usually uses) in arm or disarm position, but it only enables that position when you flick the right momentary switch. I can do this pretty fast too, if needed. The way I did it was using a global variable. To apply to this logic.. The mix of the Arm channel uses MAX of GV1. Special functions cause GV1 to go +100 or -100 based on logic switches or physical switches. Since I was using momentary, I also created logical switches with Edge function.

I can already see someone getting few cuts with this setup.

Excellent tips JB! This is the exact reason I run my "armed" switch all the way down when flying. No chance I'll bump it as my finger is resting on it as I rip. Thanks brother!

Hey JB, great chalange. I think logical diagram would be: RS Flipflop while S = ARMS_SW; R=notARM_SW AND notTHR ;) OpenTX is beautifull :D almost like the old days programming calculators :P

ROFLMAO! Comedy with fpv is the best!

Thanks Josh, I am definitely going to do this with my arm switch!

i just imagined arming a quad and not being able to disarm it. proceed with caution lol

Ok I really need help with this, I'm doing it on a taranis x9d plus. It all seems to work almost... Except when I watch it in INav modes it seems inverted like it'll only arm when above minimum throttle. I know the percentage system in taranis can be different than radiomaster but I don't know how to fix it. EDIT: ok not sure why but taranis needs the first line in the mixes blank and the two lines under it are the ones in this video! Works great now thanks Joshua you rock

I belive you need a second sticky for when you "disarm" throttle down to stay disarmed if you bump the throttle by mistake. Correct me if I'm wrong or if I missed something in the logic. Regards

This reminds me of something I saw recently on a Screecher video 🤔

dual disarming switches not associated with throttle, one switch to activate the main instead of -100 throttle.

i set mine so you have to hold the right toggle/momentary switch up, then flick the left switch, to turn it on. Got tired of accidentally arming when the radio bumped into something.

I have a two-step sequence where I hold two switches up for three seconds & then, let go of one switch to arm. All this does is unlock my controls, but the motor is not started. To start the motor, I flip one of the switches that I used to arm (which starts the motor) & then, I'm ready for takeoff. In the context of helicopters, if the motor is accidentally switched off in mid-flight, I can easily do an autorotation & safely glide the helicopter in to land. Quads, on the other hand, the very second the motors stop spinning, they literally drop out of the sky.

love the skit

Hahaha..aaaggghhh! I had a disarm next to a rate profile (throttle scale) switch. Until Easter morning I hit the wrong switch flying back to my location, and aaaaggghhh! A bonus Easter egg hunt in the woods that day!

I've disarmed while flying exactly 2 times in 3.5 years of flying. First time was within the first 3 months second time was 2 months ago. You know this has got me thinking, what's the best way to solve this problem. I think the only disarm in low throttle is the best for me, yes you could still accidentally disarm during a dive but with my flight style those chances are very low. After you relearn the muscle memory of a new motion it would be just as fast.

Lmfao the setup in the beginning is gold

I can totally see a kid coming and messing with a radio while flying!

I think my brain just exploded!!!🤯 yep it did!!

I just got my JB edition radio and I love watching these videos!!! I love bragging about all the things this radio can do that I'll never be smart enough to do!!!! Geeze....

Sometimes drones arm in betaflight . Low battery can cause crazy betaflight

My switch is top left default . Hate it , dropped my Chim 7s from every altitude imaginable.

There is a fault in how the 'disarm' mixer was set - it actually needs to be "-200%" if you want disarm to be low, arm to be high, since MAX pegged the mix to 100%, so a weight of -100% only took it down to 0% (mid channel), not -100%, as you can see at 7:02 if you watch the mixer and channel output bars at the top of the screen... Also, there is actually no need to set two mixer lines - you could use a single mixer line, and have it hooked to the logical switch directly... makes life a bit easier. But it wouldn't have allowed you to demonstrate replaceable mixer lines linked to switches. I've seen a few takes on non-direct arm/disarm - Mr D's "Open TX Ultimate Arm Switch" which uses logical switches, GVs and even a curve to set the disarm state... which also allows for preventing arming when the throttle is up, and feedback from the transmitter at every state (arm, disarmed, can't arm until throttle low, can't disarm until throttle low), and John over at rcvideoreview's has done a "safer throttle cut" version that won't let you arm the throttle unless the throttle is low. I use a version of that myself as it allows for zero bounce landings since I can enable the disarm during the landing approach (and get audio feedback that it's going to trigger), and then when I drop the throttle it cuts instantly. I do understand your concerns, as with inexperienced pilots it's easy to panic... but to me this allows all the safeties on the FC to do their job, and the transmitter is doing it's job in telling the craft to do what I want it to do. It is a preference. If I was concerned about needing a real "emergency stop" - as that is what we're really talking about, I would probably do something like use the crow feet 6POS on the tx16 as that's basically impossible to hit in flight by accident, or maybe the T5/T6 trims as a momentary switch. It just seems so easy (and is - I've done it twice) to bump one of the other switches when moving your hands in cold weather (i.e. impaired feeling) and disarm in a unrecoverable manner. Most of the time, it's all good... but then there's that time it goes horribly wrong. What really annoys me is both a friend I have camera quads with GPS position hold, return to home, basically can fly themselves better than the monkey behind the joystick... but the emergency motor cut is utter garbage... you're supposed to hold the button for three seconds and it will cut the motors... except when you actually need to use it... it has usually already hit whatever you were trying to not hit, and the emergency cut then won't engage... how stupid is that! MJX really need to do better with their Bugs series!

Is there a way to swap controls mid flight (in betaflight)? Ie say you wanted your yaw and your roll to swap sticks when you flip a switch? I've had a model that I want to design/print for a while now, but it kinda rides on this control swapping concept to be comfortable.

Were can I buy that shirt?

I like your title 😂

Lol sounds more than dangerous 😅 when i disarm at landing i hover with 15-25% Throttle.... will not most qauds start bouncing when they "land on the ground" without diarm??? 🤨🤔Thanks for al ur effort! Always nice to learn something :)👍 (edit two: the finishing of the setup answered all my open questions)

If you have old-style switches, I can see why something like this is smart. But, an accidental disarm on the Tango 2, for example, is not easy. You might panic and disarm out of sheer muscle-memory, but nothing else. I haven't yet seen the whole video, but I'm betting there's some cool logic stuff in here;)

Does opentx have a random number generator on its logical programming?

🤟 woooo for trim switches

Is there a video that explains how I can use two swicht for arming? I have arm on switch SF, but what I want is that it Only Arms when I pull switch SH for a second. 🤔🤷🏼‍♂️✌🏻

You earned it! Now pay the man.😁👍

This man should be an actor xD

It sure would be nice to have support for arbitrary expressions instead of all that black magic. Here's how this could look: ARM = ARM ? ((!SF && THR < -95) ? -100 : 100) : ((SF && THR < -95) ? 100 : -100) The syntax is open to debate. But the idea is that you would specify the next value of a particular channel (or mix or whatever) based on the current value of any channel (etc) - including the channel itself (equivalent to sticky logical switches).

Moral of the story is don’t flip JB’s switch.

My brother flipped my arm switch once. New motor, esc, arm, antenna

What if you bump the other switch . Uh oh

Isn‘t the easiest way to just use L02 as the „switch“ on channel 5 in the mixer. I think there is no need for all that max shenanigans and all the multiplex replace lines. Since L02 is already activating when arming and only deactivating when disarming and throttle at 0. I do the same thing for prearming on FETtec. Just L02 as my arm switch and done

been flying for years with a single arm switch :D

You already made a video on this!! Well technically, you made a video on the opposite thing of this where you can only arm with throttle down.

I've never got my switch accidentally but i have hit it mid crash when i could have saved it but hit it by reaction

I keep switching from my skylite and my dji fpv. I keep disarming thinking I’m switching modes.

Tell Roscoe to keep his hands to himself. Great tutorial

i can’t figure out how to make S1 and/or S2 pots the source switch for a special function. on taranis by the way. any idea how to circumvent this apparent oversight?

It hasn't stopped raining in Aust for 6 months!!!!!!!!!! I just wanna fly

You know how that kid hit your switch while you were flying? A child did that to me while I was flying... Sufficed to say... I don't fly around children anymore

“Of course this will not end in disaster, for I am Charpu!”

Wouldn't it be easier to move back to arm and disarm via stick commands for this case? The function is basically the same: instead of a switch, four channels (the sticks) have to show a certain value all at once.

That’s fuckin cool as shit. Great video. I love this kinda stuff. Not that I want to do this exact setup but it helps give ideas for other stuff.

so if you hit the disarm switch while flying and then drop your throttle it will disarm and fall out of the sky?

Better to crash a quad than to harm someone because you panicked and weren't able to disarm.

I just lost a quad in deep water, seconds after take off.... Clumsy! Is there a way to set up 2 arm switches so that you need 2 switches on to arm, and then 2 switches off, to disarm? Bad idea?

"The days of servos..."?? Servos are still relevant JB. Actually anything RC, except multirotors, use servos from fixed wing to boats to any land based vehicles. Unless you are talking tricopter style multirotors that used a servo to control yaw i dont see why you would refer to servos as obsolete 🙃🤣

😮

Momentary switch with delay is a better set up.

I found it is very dangerous to use disarm switch. Instead I use motor interlock feature of the ardupilot (refer to ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE--Db4u8LJE5w.html for more details). Essentially it is momentary turn off/on all copter's engines at any given point in time. It does _not_ disarm the copter. Even if you accidentally turn them off in flight, you can just turn them on immediately. My take off sequence looks like: 1) arm, 2) motor interlock on. Landing sequence is - just disarm after land.

a deadly arm switch lol

Mmmmmmm freeze pops.

people are weird just learn to not disarm

You took your glasses off before you put on your googles. Are they reading glasses or do you have astigmatism like me and have to wear big box googles with glasses.

lol arm disarm. I love flying fuel. No arm/disarm nonsense to worry about.

Here's another similar challenge: disarm only possible when the quad is near you(less than 10meters?)

Why would they want this disarm setup 😂 just learn to stop disarming on accident...I don't think I have ever accidentally disarmed in flight

You could punch out of a loop with zero throttle and still accidently disarm and it would drop based on this logic. Not that this is any better but maybe disarm could also be based on GPS speed and elevation. So when GPS speed is less than 5mph and elevation is less than 1m allow disarm.

Don’t do it! Hahahaha

I can see landing would be interesting, flip the switch, come in for a landing and disarms on 0 throttle... might try it lol

Ok I'm out.

Disagree. No more dangerous that a hard disarm. Issue here is that you have programed your own brain to work in a different ways to how the quad is configured correctly.

Nope Nope Nope.

Why are your videos so long? It should be short and concise. It gets lost in the main topic!

My second time out with an FPV quad (Rekon 3) I found myself with WAY more altitude than I wanted. Some part of my brain told me to disarm my quad to shed some height.. somehow I established the presence of mind to re-arm my quad as I was tumbling from the sky, and by some miracle I must have been close to level when I got the arm switch flipped because I actually leveled out (horizon mode) and was able to resume flying. No, I did not remember to turn on my DVR before this happened and yes, I am really bummed about it because I hardly believe it myself.