OpenTX Quick Tip: Failsafe (D16)
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- เผยแพร่เมื่อ 5 ก.พ. 2025
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Thank you Lee for the clearest explanation of D16 failsafe! This is my first time setting failsafe on FrSky and have only used ImmersionRc or Crossfire which are very easy to set up.
Really interesting, Lee! Thanks a lot! 😃
And I saw some fantastic tips in the comments as well! Thanks, everybody! 🖖😃
I use the FRSky stabilised receivers a lot for the panic switch capability. With these I set a Custom failsafe which turns on auto-levelling, sets throttle to -100%, ailerons and elevator to 0% (i.e. centred) and sets rudder to +100%. The intention is that when the plane loses signal it spirals gently down to the ground somewhere around it's last known position without self destructing. Thankfully I've never actually had to see it working!
Chris, you might want to try in manually. Even when using a Gyro/Stabilizer I've had planes go into a spiraling death dive with full rudder held on.
@@paulg5437 That's a good point Paul, I'll try it and maybe change the amount of rudder I set. Thanks!
@TheChrisBalmforth have you had a fail safe condition in the last 3 years? Interested in an update. I agree with previous comment, full rudder might be a lot. When I'm setting up mine, I'm thinking of giving something around 10% rudder.
Thank you so much for taking the time to put this together!
Another very helpful video.
Thank you, I hope you and the family have a wonderful holiday.
Cheers
I'd also suggest that after setting the value, test the failsafe with the prop removed. I've seen some motors go to full power when the TX is turned off especially with the multiprotocol model. Ditto for an arm switch.
Great tip. See my plane setup videos for a complete step-by-step setup. Including trimming, travel, expo and Failsafe setup Happy flying!
I have used a flysky rx with a jumper mpm and thats exactly what happens.... 100% throttle
I'd check how the failsafe is set for those recievers. Some (like Spektrum) only store the failsafe on binding.. the of luck !
When I was flying FM 72mHz, well before quads, flight controllers and any form of stability other than heli gyros, I had a receiver that had 2 fail safes. One was neutral throttle off, and Hold. Hold would hold a preset value like custom does. You were to set your Tx to Hold for that function IF your TX COULD be set to Hold. LOL! The next up RX had Neutral, Hold, and Last. I guess Hold in Open Tx is like Last in that old Rx. Thanks for this video. I am still new to Open TX, and it is a serious learning curve.
👍 thanks.
I'm only have multirotors and I'm setting my failsave to off. But I know some people setting it to go to stabilize mode and hold throttle to 50% for certain amount of time. It allows drone got strait up with a hope to recover signal from transmitter.
Is because of these little tips that I’m a happy subscriber at Patreon. ☺️
This was really helpful. I just get up my T16 so kopilot switches to RTH when I lose signal.
I used custom [set] so I have 50% throttle and the position on the 3 position switch that's set to RTH.
No need to set throttle to anything apart from zero. It's safer that way and the Kopilot will control the throttle during RTH...
@@Painless360 oh yes, thanks! I'm new to this hobby and your videos are very useful.
Keep posting videos!
Correct me if I'm wrong but I believe this only applies when you're in D16 mode. If you're using a D8 receiver (hey some of us still use some of those!) then the only way that I know of to set the failsafes is via the failsafe button on the receiver.
Yep, always read the manual for the rx you have. Happy flying!
Great refresher. Thank you.
Would you clarify one thing for me. I am using the Matek F405/TBS Crossfire with Inav and I have always set my transmitter it the setting I would want for failsafe. IE ARMED and MODE set to RTH and then set failsafe on my receiver. Have tested in the air and it works. So when you are using FrSky X series RX and the CUSTOM/SET method is it down loading these settings onto the RX same as setting TX to ARMED/RTH and then setting FS on RX.
Thanks so much for the video and all the other videos! I used Custom method for Failsafe but it seems to not work. I have a Jumper T12, Jumper R8 receiver and Pixhawk 2.4.8 running MP 1.3.76 and Arducopter V4.0.7. My Channel 5 is Flight Mode with position 3 as RTL. In Faisafe settings on my Jumper T12, I changes the value for Channel 5 to 100. With props off, I armed the quadopter, gave 20% throttle and then turned off the transmitter. Mission Planner showed that the quad went to "Land" mode and not RTL. Flight Modes window also showed Current Mode set to "Land". What am I doing wrong? Please advise.
great tutorial as allways thankyou
thank you !
Hi again, can you maybe tell me why Jumper T12prp does not have Failsafe option under Model settings? Do you have to do something so it shows? I am using Radiolink R6FG receiver for it- with its devault remote it supports setting up failsafe but can't manage to find it in Jumper settings as show on your videos with like TX16S
What protocol have you selected? Not all of them have a Failsafe option.
@@Painless360 RadLink (radiolink)
I don't use that one but the FS detail in the wiki seems to show that the FS position is on other channels? github.com/pascallanger/DIY-Multiprotocol-TX-Module/blob/master/Protocols_Details.md#RadioLink---74 Best of luck!
@@Painless360 Awesome thanks for the link- is shows there that Failsafe is supported from Channel 9 to 16, but O don't know what that means. I changed the channel range to be from 9 to 20, but the failsafe potion did not appear?
how to do set the failsafe when using the RF external as there is no option for failsafe?
@@Painless360 its a DSM2 DSMX module i don't get a failsafe (spektrum DX5 module I think)
If it is a DSM style connection then the bind is probably the answer - easy enough for you to test. Best of luck!
@@Painless360 yup it appears to be the failsafe @ bind that works thanks
I've heard that setting your radio to HOLD while using a flight controller is preferable because when you loose signal, it will repeat the failsafe flag over and over again. Maybe i did not understand correctly?
Depends on the system youre using. Because the failsafe is detected and the FC is told via the failsafe flag immediately - it depends on how the flight controller handles it. Things like the Vector advise no pulses and things like iNav have a timeout before the failsafe action is initiated (stage 1 in BF).. I'd always err on the side of caution with failsafe and test rigorously. Happy flying!
With Inav and Frsky this is my preferred failsafe. For the first time, I set the failsafe command for a test on a switch and later I testet this by switching the transmitter off, it worked all the time > RTH. But you must have set the failsafe on the fc correctly. Since I am not using any other fc system and
not Flysky, which had issues with the failsafe, I stay there.
Succinct and useful thank you
I installed opentx on my Horus X10s but after a month I switched back to FrSkyOS. It seemed too complicated to just do simple operations.
Good one
Does there need to be a "failsafe" type receiver to use this feature or will any receiver work?
This is for the X series. Check the manual if you are using other types.
.
Mr iNav say set Taranis failsafe to hold? ??
Please see my iNav builds. If you're using SBUS then it makes very little difference what you use as SBUS sends the failsafe signal to the FC in any case. Happy flying!
Now I know why I could never get it to work.
Hope the video helped...
@@Painless360 it did. I lost one of my quads and it really shook my confidence to fly. The failsafe didn't work either and now I know why. I didn't set it up properly and on the tx it was on "hold" so it never met the requirement for failsafe to kick in.
Great advice Lee (and other commenters) thanks for that. I showed you this before but for the rest of your viewers, here's what happened when my failsafe wasn't set correctly on my plane last summer....
th-cam.com/video/LogcEJtBDfU/w-d-xo.html