iNav Programming - Re-Arm In Flight With No Restrictions

[@dorelcodrutpatrasca2993]

Thank you, is on my "to-do" list now, 2 years late but only recently I accidentally disarmed the plane in flight.

[@MrD]

It’s one of those things that doesn’t happen often. I’m sure I’ve only done it twice.

[@BryonGaskin]

Disarmed armed today midflight. Haven't checked the DVR yet, but I was able to re-arm

[@billkendall7464]

Thanks D!! I just experienced this yesterday when a "Fat Finger" hit the Arm switch mid flight. Wing disarmed and I could not get it to re-arm in flight. Fortunately I still had control surface control and was able to land safely. I will be adding these adjustments TODAY!!!

[@MrD]

This will help those situations greatly Bill 👍🏻

[@rscottwilson1]

Great info. In the past, I have inadvertently hit my disarm in flight twice causing a crash landing. This will be great next time it happens!

[@MrD]

No problem Scott. Glad I can help.

[@ilyasahmed2141]

Seasons Greetings. Thank you very much for explaining this in detail. Your video couldn't have come at a better time for me when I was trying to check my motor after doing a bit of repair on it. Followed your instructions and set the bypass at CLI. And I was able to bypass the GPS by arming with the yaw stick right.

[@MrD]

Happy Holidays Ilyas. Glad I could help.

[@aaronwood9523]

I like it just crashed my cloud cause I hit arm switch on accident was able to put it down in field so not much damage got it fixed I’m heading out now for more inav 6.0 And 6.0 is bad ass man thank you guys so much couldn’t of done any of this without your help thanks bud

[@MrD]

Glad you’re enjoying INAV 6.0 Aaron. Nice to hear the Clouds was fixed too 👍🏻

[@mfoo3038]

This is so nice, I dropped the disarm_kill_switch = OFF for this. Thank you alot!

[@MrD]

I’m glad you found it useful. I’m especially glad you turned the kill switch back on 🙂

[@HermyH66]

This is a way more better solution than the disarm_kill_switch option set to off that i used till this moment. Only change i made is making the override arming safety dependent of altitude instead of speed. Where i fly sometimes speed is optional, so now the override is active above 8 meters altitude.

[@MrD]

Great Herman. Just be careful you don't fly below your launch point. Other than that it will work fine.

[@HermyH66]

@@MrD That's a good one, although that situation here in the north of the Netherlands is rare.

[@MrD]

@@HermyH66 Very true, In which case, you should be fine.

[@ayoaina_fpv]

3:35 - If your radio has voice/ audio feedback, you should always program it to say 'disarmed' when you flick the switch to disarm. I do agree with Darren on this point though :-)

[@MrD]

Yes, totally. My arming switch always gives voice feedback for arming and disarmed. In videos I turn the sound off, so that it is not annoying in the video.

[@gmac_83]

Arm channel on a rotary knob for me. Good video! Merry Christmas 🎄

[@MrD]

Merry Christmas Greig.

[@clayquarles8650]

Nice! Good idea! Hard to bump off.

[@KevinMeyerVideos]

Good idea Mr D. Thanks ,I hope you had a good Christmas and that 2021 will be prosperous!

[@MrD]

Thank you Kevin. I had a great Christmas thanks, I hope you did too. So long as all my friends and family stay safe, and we can fly again, I’ll be happy in 2021.

[@MrDrivesafe]

This is so useful! I'm quite sure I've had a couple mysterious BAD crashes due to rearm "safety" conditions not being met and also throttle down auto disarm features being activated during random soaring sessions. I wasn't aware of these features. I've been trying to figure this out for almost a year. I wonder if this should be a click of a button option in the modes tab or advanced tuning tab of the INAV configurator. I wonder if a video on all the ways a model could be disarmed and how to modify those settings would be useful for the community. Thanks so much for all your work!

[@MrD]

Hey Jon. I believe we’ve had a little chat about this on Discord. If not, someone else has had the same thoughts.

[@MrDrivesafe]

Yep that was me. Thank you!

[@MrD]

No worries Jon 👍🏻

[@thevene]

Darren, that was awesome!!! Happy holidays

[@MrD]

Thank you Thevene. Happy Holidays to you too, and a great 2021.

[@nmrlab3807]

This is a fantastic tutorial. Thank you very much Daren

[@MrD]

No problem 👍🏻

[@raffman4266]

Great Vlog! Information was really important and useful!! Kudos to your cahnnel sir!

[@MrD]

Thanks Raffman 👍🏻

[@scotthealey1887]

Perfect! Thanks for that. Maybe choose 3d speed instead of ground speed, just in case you're in a nose dive.

[@dmctec5943]

Good advices! Missed the field test. Yesterday Flying my Wing I accidentally disarmed the motor and Crash! I could not Re-arm, with the Racer drones there is a similar function of moving the two CSC Sticks (Down and out) I tried it while my Wing was falling and I did not achieve anything, the inevitable happened. I'm going to apply your BYPASS mode and do a test.

[@MrD]

The bypass method in this video works pretty well. I was actually showing a friend it working today. I disarmed and rearmed about 5 or 6 times with no problems.

[@dmctec5943]

@@MrD Thxs, I´ll testing next saturday!

[@johnfrost3476]

Well I accidently disarmed in flight, and did not realise I did it. It was a really old radio I had not used FPV before with only 1 three position switch so arm and RTH were very close and not in the normal spot. Also there was no verbal feedback from the radio. I selected RTH to demo to a mate at our destination/max intended range and thought it did not work, so thought wrong switch, did not even think about arm. When I noticed I had no current draw my head thought the motor or speedy had failed and I started looking for a landing/crash site easily identifiable on google maps (group of trees, well defined fence lines etc.) which worked and I recovered the aircraft. I had hit RTH with all my fumbling but it obviously did not work being disarmed. I was using a DJII air unit and only by luck noticed it was not recording (turns off when I disarm) so pushed record on the goggles and recorded the goggle view which was the only reason we could find where it was on google maps. I still did not make the disarm connection as my main focus was now putting it down where I could find it. Disarm would have also dropped TX power to 25mw so I don’t know how I maintained picture as long as I did. As I don’t normally drop the throttle until closer to home I would have preferred to have had it happen closer to home and not deal with it when it happens as per the video but know where he is coming from. If I was further out Disarm with DJI the way I set it would have resulted in loss of video due to dropping power, RTH would not have worked and all would have been lost. There are many lessons learned the hard way here but I am going to get a gated switch and fit to this radio if I continue to use it. The ones you have to lift to move. I may consider it with my Taranis also but that would have have announced “engine off” or “disarmed” and I could have sorted it straight away as per the video advice. PS had not done this arming safety setting but have now. Thanks.

[@MrD]

Sounds like you were pretty lucky. Fortunately the arming safety programming in the video would allow you to instantly rearm. I don’t have the DJI system, but know the OSD isn’t as fully featured as the iNav standard OSD. If you disarm on the standard OSD, you get a flight summary screen. I think the biggest problem with DJI in this instance could be the not knowing you’re armed or disarmed. Hopefully they will add more OSD elements in the near future.

[@johnfrost3476]

@@MrD If I was running 2.6 I would have got notification (I think) in the craft name area but am running a hacked version of 2.4 to get an extra port on a Matek 411 WSE, so don't really want to update as it works.

[@MrD]

You can always take a dump of the settings on 2.4. That way if you have issues, you can go back to what you had easily. It may be worth a try for the extra info you’ll get on the OSD. Not sure if it would sat disarmed though, as its more a summary page rather than a system message. I’m not 100% on that.

[@johnfrost3476]

@@MrD Thanks but board only has 2 uart's. someone did a hack to use a soft serial (I think) into an extra uart. not sure of the technical aspects other than it was specific to that version of firmware and it worked. It let me connect the GPS DJI unit and other bits I needed to the boar. If there is a similar hack for the 2.6 version I may try it. The reason I was using the old transmitter is it had a old chain link on it for the extra range. If I went back to 2.4 or used TBS I could use my Taranis. Thanks

[@MrD]

Hi John. Matek do update the firmware, so there is a 2.5.1 and 2.6 version with the full duplex softserial. www.mateksys.com/?p=5159#tab-id-8

[@FasterThanJesus666]

Dude I think you may have saved my plane and my fingers

[@MrD]

No problem Simon. I think this is the best solution all round.

[@trpalmer]

Mr.D, this saved me last weekend! Funny enough though, the plane went into Autolaunch because I have Autolaunch permanently enabled. Thankfully was able to exit out of that quickly. Would love to see what the best approach is for quadcopters on INav when it comes to disarming accidentally midflight.

[@MrD]

Glad it helped. With a quad, I would do it exactly the same way. But use 3D speed instead of groundspeed. In fact, 3D speed would be fine on fixed wing too.

[@kool-k-kel]

excellent tip, thx again for your inav efforts

[@MrD]

You’re most welcome. Happy Christmas.

[@alainrac56]

Thank you, very wise and useful!

[@MrD]

Glad it was helpful 👍🏻

[@fpvwing]

Great advice! Thanks Darren.

[@MrD]

No problem. It works a treat.

[@sams9716]

Thanks a ton! Looks like I can take auto launch off a switch again!

[@MrD]

To be honest, I didn’t test this with autolaunch permanently enabled. It should work fine, but I’ll see if I can test this.

[@sams9716]

@@MrD That would be great if you could test it! Also will this work if auto trim / tune is turned on as well? Had the iNav disarm bug a while back and couldn't rearm. Only remembered on the way to pick up the wing that auto trim was on and thats what was stopping the rearm.

[@avsaase]

Even without this, you can rearm mid-aid when auto launch is permanently enabled. Did it last week.

[@MrD]

Thanks @@avsaase 👍🏻

[@avsaase]

@@MrD Thanks for this video. I've only accidentally disarmed mid-flight in acro, so I'm not sure if I would have been able to rearm if I also had to switch modes.

[@tachyonpost1472]

Thanks for this great tip. How does in flight rearm with this method react if permanent launchmode is active ?

[@egtreadway4232]

Great video Darren I crashed a c1 chaser years ago by accident disarming during flight, just wondering if using altitude instead of speed would be better? Maybe 15 or 20 feet thanks again

[@MrD]

Not really. 3D speed would be the best choice. If you’re flying, you’re always going to be above stall speed. Which is always going to be above human walking/running speed. So its a safe value. However, there is a chance that you could accidentally disarm below whatever altitude you set. It would need to be at least 5m. The lower you are, the quicker you’d need to re-arm before ending up in the ground. You may be too low. But using speed rather than altitude, at least you get a chance.

[@egtreadway4232]

Makes sense I'll go with the speed, thanks again

[@adamhodge3646]

Brilliant video, thanks!

[@MrD]

Thanks Adam :)

[@ElseysEmpireRacing]

Hi Darren. I am trying to implement this in I-Nav 4.1.0. It seems that the rudder right is no longer required? I only get "Armed" to stay on after I toggle the Arm switch 11 times in < 10 seconds, no rudder. The haptic comes on too! Simple right rudder + Arm does not work. It all goes away after I disarm for a few seconds. I tried with and without the programing enabled and it makes no difference. Have things changed since I-Nav 2.6 ?? Thanks for these video's !

[@ElseysEmpireRacing]

I sent you a PM with more details. The above was in Manual mode, once in Horizon mode, things became very weird.

[@ElseysEmpireRacing]

I-Nav Arming Bypass problem. 3/19/2022 V 4.1.0 Matek F722PX FrSky OTX No GPS lock, no sats. CLI Allow_bypass is ON Programing is all off (1) Setup all green except; red X - Nav is safe Mode Manual Won’t arm, Dark blue Won’t arm with right rudder Horiz Won’t arm Horiz + Right rudder = ARMED + Haptic !!!! Now; All modes ARME EVERY TIME without rudder. Can’t stop arming !!! Setup all green again CLI “Save” Setup, brings back red X on Nav is Safe. Starts all over again at (1)

[@MrD]

Hi Dave, I’ve replied to your PM. But just to make note here. The main thing wrong here is the bypass not working in manual. It should. Once you activate the bypass, it stays active until the FC is reset; by a save and reboot (save in CLI) or power off and on.

[@avsaase]

What happens when you lose the gps fix? INAV cannot figure out the ground speed in that case.

[@goku445]

Yes, I was thinking maybe Altitude with the built-in baro set to something like 5m minimum was a good option.

[@MrD]

If you lose GPS fix, the model would simply behave like this is not enabled. It would be an error, but an error on the side of safety. I feel like mid air GPS loss is so unlikely to happen, that the speed is a pretty safe option. I did think about altitude. But I have seen inaccuracies in reported altitudes. Plus, if you fly below the launch point, it won't work either.

[@avsaase]

@@MrD I've never had a gps loss myself but I have read it sometimes happens. Makes me wonder what happen if you have vtx power as a function of distance to home and you loose the gps fix. Would be a bummer if it then switches to minimum power. Do you happen to know this?

[@MrD]

@@avsaase that is another good point. In fact, the VTx switching is more critical. I don’t know if such a variable exists in the programming, but it would be good to be able to test that the data is working. If not, you could add a fallback. For example, with OpenTX you can do a test on the telemetry such as !RSSI.

[@MrD]

I've just had a look and the best test at the moment would be the GPS Sats. You could test for GPS Sats < 6, if so put the VTx to full power.

[@ericnelsonnn]

Does re-arming reset the home position as well?

[@MrD]

It shouldn’t do. Setting the home point has been defaulted to first_arm for a while now. It’s worth checking, as there is a chance that the old default could have been been moved across. But it’s slim. The setting is inav_reset_home github.com/iNavFlight/inav/blob/master/docs/Settings.md#inav_reset_home

[@ericnelsonnn]

@@MrD Ok great thanks!

[@Frank-sv8uf]

Thanks for your video! It looks iNav 6.0 doesn't offer OFF option for nav_extra_arming_safety anymore. 😟@@MrD

[@MrD]

@Frank-sv8uf yes I removed the OFF option in 6.0. It’s something that always caused trouble. ALLOW_BYPASS is a much safer option.

[@jcfpv3454]

That's sweet thanks

[@MrD]

You’re welcome

[@jcfpv3454]

I can't tell you how many times I disarmed in mid flight and had to coast down with the servos

[@live-in-clouds]

Thank you

[@MrD]

You're welcome Dex

[@GustavoFpv]

Damn, my inav isn't disarming my fixed wing....com like this? defect in the flight controller?

[@MrD]

This trick is to allow re-arming. Disarming should just need you to flick your arming switch.

[@sarantis2]

If I accidentally disarm in flight can I arm with allow_bypass?

[@MrD]

Not as easily. As you can see in my demo, you’d still need to lower the throttle. I guess you could do that as you yaw right. But it’s something else you have to think about, in that situation. With this simple little bit of programming, you don’t have to think at all. Just re-arm 🙂

[@arpitpatel9631]

Nice information

[@coreyperez13]

Class act! Thanks!

[@MrD]

Thanks Corey

[@subzero674]

Thanks Mr. D! I have accidentally disarmed an airplane twice. A couple of summers ago I was able to glide almost to the shore of a lake. Waded to recover. I did it again today fumbling for the volume control. Luckily I was able to glide to a snowmachine trail. There are several feet of snow on the ground, and if I hadn't made the snowmachine trail, I'd have had to go home for skis. What flight parameter would you base this on for a quadcopter? If accidentally disarmed, it wouldn't have ground speed. I fly off hilltops, so altitude might fail. Do you see a problem with using Home Distance? Maybe a quad would hit the ground before I could react anyway.

[@MrD]

I think with a quad, it would probably just drop. To be honest, I don’t really fly them. Perhaps vertical or 3D speed?

[@flo7ch979]

What do you think about setting throttle position as a flight parameter?

[@MrD]

For what purpose?

[@flo7ch979]

@@MrD for quads. If you accidentally disarmed in flight, you can arm a quad.

[@MrD]

I don’t think using the throttle is safe. Better to detect movement of the aircraft.

[@pilotmiami1]

Thenks

[@MrD]

You’re welcome.

[@pilotmiami1]

Matec 411wse.inav arm but motor not spin

[@MrD]

Don't worry about it. If the throttle moves on the receiver page, and you can operate the motor on the slider on the outputs page, it it all ok. The motor doesn't arm on the bench for safety.

[@Chris-vc1dh]

I got disarmed in the air by mistake, and I really don't understand why inav allows disarming on 100m high during flight, it should not allow this, I think its sick of inav, I can see many reasons of disarming near or on the ground level but not 100m up.

[@MrD]

I disagree. You should be able to disarm at any point. If you’re that high up, you have plenty of time to re arm too. Even without using this trick to make rearming easier.

[@Chris-vc1dh]

@@MrD can You please give me one reason of a need to disarm during flight up in the air, please?

[@pilotmiami1]

Unfortunately l don't fly

[@jcfpv3454]

Norad Santa tracker if anyone wants to see a really tradition

[@fellpower]

All the things u build in, makes INAV SOOOOOOO complicated. I CAN use my plane safely, without a need for all that safety features.....but they constantly annoying me.

[@MrD]

I disagree. The safety features are there for good reason. They have never caused me any issues to be honest. I’ve always said I’d rather lose foam than injure anybody.

[@sergemichaux8324]

Thank you! Great stuff!!

[@MrD]

No problem Serge.