Failsafe HOLD vs NO PULSES | which is right?

[@FPVUniversity]

Cheers Joshua! Good that someone followed up on the topic.

[@TugaFlyers]

Déjà vu :)

[@davidhayter6804]

Joshua and Pavel confirmed russian spy brothers

[@dbm5540]

I thought fly away quads went into return to home mode , and just went back to China on Christmas Day.

[@fpvclub7256]

Thats good for business. :)

[@smooth_ops2942]

That's DJI 😋

[@Mateyhv1]

That was funny!

[@miklosko3355]

Yes. They always return to their creators. -to be resold again.

[@ArchmageAU]

Great info. Yes, set TX/RX failsafe "no pulses", works for all quad cases (like CPPM). Great note about RSSI channel. Will have to implement that. Arm AUX channel I set to hold as I want it to keep the position for the 0.5s of stage 1 failsafe. I may however add the angle mode to give the copter 0.5s of levelling so it tries to drop upright if the failsafe continues (my angle is on a different channel to arming - and I have the accelerometers enabled - and small_angle 180).

[@aaaaaaaaaassssssssdf]

i honestly love reading reviews on the $20 quads on amazon that people fly outside and they end up going full throttle straight up until they can't be seen again

[@Kaspaverse]

Isn't that how you are supposed to fly?

[@licensetodrive9930]

Ages ago, before I got into FPV I flew GPS quads, one of which I hadn't setup failsafe properly on the RX and only realised after a flight test in my back garden - suffice to say I now always make sure failsafe is setup and works on any new quad before its maiden voyage because I don't want that to be its only voyage.

[@SpeedyAdventures]

Torban Dallas covers no pulse in his gps video awesome that u come up with an addition in what fail safe no pulses....jb always seems to amaze !! me

[@jackevans2386]

Best failsafe experiment might be to record all channel data from the receiver during a controlled landing, then on a real failsafe event, just switch the receiver out of circuit and take over the receiver and spew out the same previously recorded data to the FC. A small micro controller pcb would be needed of course. I'm going to have a go at this. Height above ground would obviously be a problem if recorded altitude didn't match the failsafe event, but it's worth a shot.

[@juliejones8785]

I've always set failsafe to no pulses and betaflight to drop based on watching your previous videos when I started flying. Watching this got me to thinking that maybe there is a better way. You seem to be really against land, but I've had a failsafe cause a drop that destroyed the quad. If failsafe goes to auto level (and you have the accelerometer enabled) then wouldn't it be better to have a land failsafe with throttle set too low to actually maintain altitude? It would seem like this would level it and allow a more controlled crash. It would still drop, but just a little slower. I run a top mount battery and I can hit the ground pretty hard when level without causing any damage, but if I land on an arm then arms break and motors get damaged. How about a short video showing what happens when failsafes occur. You could set up a switch or just turn of the radio, but show us what happens with different configurations of failsafe in betaflight. Thanks!

[@JoshuaBardwell]

I'm not a fan of descending with motors active. I'd rather dump with motors off. You can still hit somebody in the head I guess.

[@vansoul2285]

Totally agree, this was also my thought. Find out a good throttle value for slow decent. Only downside might be that this feature doesn't eliminate horizontal momentum? This might drive the drone into something nasty. A fix could be included by using the accelerometer vector to kill the movement and keep level. It also could detect if and how fast the drone is moving up or down to be sure not flying off into the sky consulting the gravity vector to be bit smaller than 9.81m/ss. Is Betaflight open source?

[@juliejones8785]

My thought was that shifting to auto level with failsafe would eliminate most of the drift and help it descend straight down. @@vansoul2285

[@vansoul2285]

@@juliejones8785 Yeah, im totally agreeing with you. I don't have a drone yet to test it out but I didn't know that the failsafe land feature will also stop the drift. This feature expects a throttle value from the user, if that value is to high the drone will fly straight up until batteries run out. That's why I was proposing using the accelerometer to check for vertical movement to slowly land :)

[@tiagotiagot]

@@vansoul2285 Accelerometers can't tell velocity only acceleration; the accelerometer reads the same thing if you're tilting but standing still or ripping balls; and you can't calculate velocity by integrating over time, there is too much noise, even with the quad standing still sitting on a rock the calculation would in just a matter of seconds have drifted into high speed. To be able to ensure a strictly vertical descent you need GPS, or some sort of doppler radar or downward facing optical flow camera or something of the sort.

[@LJT9393]

Yea I was trying to set this last night so my whoop would just land, but every time I’d flip the switch and watch my stick movements under receiver tab, it would jump up and down, and then sometimes completely lock out all my stick movements. On The i6X it has a failsafe section, and I set channel 3 to -100% which works when I just turn off my controller, or if it were to lose reception. Eventually I just set the switch to Kill and drop on activation. Thanks for the info.

[@StarLiteNL]

I always set my beeper aux channel to activate the beeper on failsafe. That way I can always find my quad back in the tall grass, even if my receiver is not working at all anymore, or if my transmitter died etc.

[@originellsterbenutzername6757]

Potential dummy question: when you described your Failsafe settings, you set your throttle to hold and you make sure that via AUX1, the quad is disarmed. However we are only talking about Stage 1, where you want your 0,5 seconds grace period before the quad drops out of the air, so shouldn't you make sure that during those 0,5 seconds, the quad does not disarm?

[@JoshuaBardwell]

I think you're right. I misspoke about that aux channel.

[@lotano3839]

I was reading the whole topic the other day, they actually convinced me that the right way if you are using a serial protocol like SBus or IBus is to set your receiver to hold. They took the code from Betaflight, explained it quite a lot amd then I experimented by myself. Ew JB, I don't think by now this is your best tutorial

[@JoshuaBardwell]

The argument they seem to be making is, "Hold works." But nobody has actually shown me a case why hold is better than no pulses. No pulses also works. So explain to me why a solution that only works for some receivers is better than a solution that works for all receivers.

[@lotano3839]

@@JoshuaBardwell seems that for the FC is the same: they are both ignored. But for how the protocol works then hold would have some benefits in strange behaviours of the radio. The serial protocol keeps sending data out of the radio even if failsafe occours, so if that "short failsafe" happens there is no lost data. This is why hold should work better, if I understood that correctly. But you are the man who can dig deeper! :) This is a really nice topic, I'd appreciate sooo much if somebody could find the final answer to this!

[@marinehm]

I’m using F-port. Using NO-PULSES, when I shut down the radio. My motors stop spinning. I just watched this again and now know the distinction what you were mentioning about s-bus vs pwm and the failsafe settings.

[@hoverbotfpv1425]

Great tips, pulses defo sounded like pwm so I used "Custom" failsafe then made sure sticks were where I wanted. The I shut off QX and the Babyhawk R with XM shuts down replicating loss of signal. Qx is a nice radio, Open tx comes back to memory quick.

[@robertgubberiksson2068]

You and Pawel are the only ones i support via Patreon.. You guys are the best!

[@jonnyone-truck2460]

Joshua B: Topic Idea for new pilots. How often should you expect to receive bum products? I ask because I'm pretty new to quads and have already had some strongly disappointing interactions with some "reputable" companies. Out of 3 micro quads that I have bought, 2 have needed to be returned for defects. One bought through Amazon was replaced in 2 days. One bought from a smaller outfit was sent back weeks ago and the replacement is "in the mail" with no tracking number or anything. The only one that I did get to fly was great, then I crashed and discovered that that company charges seemingly double for spare parts.

[@JoshuaBardwell]

It depends entirely on the company you're buying from. Some are very reputable. Some have a reputation for poor quality, but at least they're cheap. If you're sensitive to this sort of thing, buy from companies like RDQ and GetFPV who will absolutely have your back. If you are willing to take a chance on a bargain, Banggood is a fine choice, and their customer service is not the WORST although it does take three weeks to get anything from them.

[@cubitusclaudius]

For me throttle hold is not a good idea even if stage 1 is only half a second. Because of the case you were full throttle when failsafing, you will continue half a second at full throttle which could be a big distance your quad could run. Unfortunately it is not possible to put throttle to a certain value (for example 1100 after testing your quad is hovering at 1100 for ex.) on stage 1. That would have been great

[@hateeternalmaver]

Wow I think you finally cleared up my oldest question about how it's chosen which failsafe setting will apply between receiver, remote control and flight controller. Only thing I don't really get is why you would want your "arm" channel set to disarm in a stage-1 failsafe? Wouldn't that disarm your quad the microsecond you lose signal and therefore totally negate stage 2? Great topic for sure Mr. Bardwell!

[@JoshuaBardwell]

Hmmmm I need to double check that but I think you're right. I may have over thought that one and just not had a failsafe since.

[@shelbycrane2615]

I was thinking the same thing as hateeternalmaver. However, I've always set mine up similar to yours JB, and every time I have had a fail safe it has immediately disarmed (and turned on my beeper so I can find it). It would be awesome to see a follow up video to this to confirm.

[@LillianGardner0214]

"Lost on Christmas day w Peter Pan" Had me dying laughing.

[@chandyone151]

I‘m trying to get into this topic as a beginner and I am very thankful for your content! Question: why do we care what the controller does when failsafe occurs? Since failsafe as I understand it means that the quad has lost connection to the controller and so everything the controller does has no influence on the quad. Following that logic, failsafe settings on the controller have no influence and are therefore irrelevant. What am I missing? 🤔 I would be happy to get some help understanding this! Thanks in advance :)

[@JoshuaBardwell]

The FC has lots of choices for what to do during failsafe. On a racing drone it would typically shut down the motors. On an autonomous drone it could use GPS to return to home, or loiter in place.

[@defyent]

"Land" mode should be called "Crash gently". I much prefer this option, as it prevents the aircraft from crashing at full speed and saved parts and batteries for me on a few occasions. Obviously its very important that the throttle setting is set low enough for it to descend.

[@ДмитрийСидоров-п5я]

Hold throttle and set to disarm it's kind of contradiction. Isn't it? Q: If quad lost signal and going to disarm, and signal comes back... will it rearm again diring the falling, or arming is prohibited unless quad is stable? P.S. love what you are doing P.P.S waiting for 4.0 ultimate setup guide.

[@LovemyDrones]

Thanks for that! Time to boot up Beta Flight and make some adjustments for the F/C, Already have the no pulses set. Awesome test, I need to test that with the props off.

[@TakeItToTheGround]

Perfect timing. I was just sitting down deciding whether to bind my inav wing with No Pulses or Hold.

[@Tump2010]

Everyone has their opinions, for me I have it set the aux for angle mode, I then tell it to land with the throttle just under a hover for 3 seconds, not to land but to try to arrest some of the forward momentum and then end up coming straightish down instead of staying at 90mph in the forward direction in racing to try to stay in the area that I am flying which I make sure there is no one else around rather than shooting out of the park into someones windshield.

[@doktordrone]

Thank you JB. I’m learning this. Please stay healthy. God bless you 🙏🙏

[@sptrader6316]

Betaflight, with FC containing a barometer, should be able to calculate a safe gradual "Land" during failsafe. I'd like to see that feature added. Just dropping out of the sky seems very primitive with today's' technology.

[@DukeOfSouls]

The GPS failsafe is a game changer then.

[@garyhoffmann1615]

I am using Flysky and have found I need to set the failsafe condition in the transmitter. One of the Auxilary channels triggers failsafe which in turn activates GPS-RESCUE in Betaflight. By setting the AUX to the percentage that matches the Betaflight mode setting for failsafe I can turn off the transmitter or loose signal and my quad comes back to me.

[@BirdlessFlight]

Pawel is the European Joshua :P

[@Mateyhv1]

In expectance for the Asian Joshua :P

[@kdeclinetostatendeclinetos6707]

Hi, I have trouble setting failsafe on current betaflight and futaba T8j with Corona receiver. I have tested rescue mode on switch and it work more or less. With frog jumps it will return back to me. However when I turn my transmitter off I can see that drone freezes in last setting and last mode and nothing happens. It seams that failsafe doen't kick in (it is set to rescue gps). When i set failsafe to drop it will turn off engines after 1 second and fall, so in this case failsafe kicks in. What is wrong? Or is there any betaflight forum I can ask community?

[@manuelpellizzari8540]

Hi, I don't get the AUX1 Set 1700 exactly. You say it's to be sure it disarms but at the same time the settings in this table are for stage 1 failsafe, when you still hope to get signal again. So if you disarm in stage 1, you drop in stage 1 (?)

[@JoshuaBardwell]

It's armed with vTX on. I misspoke.

[@jakeheizman]

I'll let you know how it goes but I tested to see what throttle level I was at while hovering at full battery and then what level it was at while descending at 1 meter per second. I'm going to try and set that up and see what happens.

[@mshane86]

My d8 rx gave me a fly away, I recovered it, reset the failsafe, and it did it again. I threw it away and installed an xm+ now I never have fail-safes...

[@13FPV]

So, your quad disarms at failsafe stage 1... Mkay... So you have to drop the throttle, flick the disarm switch, and flick it back in to the arm position and apply throttle to regain control... That seems to miss the point of failsafe stage 1... Or am i missing something?

[@rayikaikin]

I've always just set it to drop in beta flight i never set fail safe on rx/tx seems to work fine

THANK YOU JOSHUA!! last week ive been looking for a nice fly sky receiver to replace my fs-a8s from my x220s, and get a little better signal + rssi on osd, while searching i got a bit concerned that some of the receiver i was interested in didnt support failsafe, i couldn't understand it since of course you can set it through betaflight... with this video you just answered my question!! thank you! hahaha and bytheway i ended up buying a fli14+, hasnt arrived yet...

[@blizzardfpv9584]

Is it kinda the same as a flit 10??

[@JohnTaylorFlyer]

Joshua, thank you for your excellent and well informed videos. I have a problem with fail safe on a fixed wing aircraft. I have Frsky Taranis X9D plus transmitter, X8R receiver and Frsky SBUS to PWM decoder. I use the SBUS to PWM decoder in the wing of my large fixed wing aircraft, for transportation purposes, to drive the ailerons, flaps and undercarriage. I have attempted to configure fail safe in custom mode on the transmitter and alternatively receiver mode on both transmitter and receiver both with the same results. When forcing fail safe by switching my transmitter off the servos connected to the X8R receiver move to the correct positions but the servos attached to the SBUS to PWM decoder just twitch which would not be good in fail safe flight. Have you experienced this problem and if so would you know how to correct it. PS: I have requested assistance from Frsky regarding this issue. Thank you in anticipation of any help.

[@i.v.2824]

Hey Josh. I'm curious. I completely understand where you are coming from in regards to stage 2 and the landing option. My question is. . . When I first started using acro, it was terribly hard to land, because the thrust from the propellers on the ground and the flight controller trying to sense the quad and so forth. In future versions of betaflight, when you enter a stage 2 failsafe, could it be designed ( as long as your accelerometer was on) and maybe you had auto level in like a background function or on a switch so when you had a failsafe you flipped that switch to go into auto level mode; that the quad could descend in auto level until it experienced the behavior it does when you're hovering over there ground trying to land like a beginner in acro mode; and then it would just disarm? Did you get where I was going with that? Do you think that is possible?

[@JoshuaBardwell]

The quad is not set up to autodetect ground effect, no I don't think so. Autolanding would be best accomplished with sonar.

[@MojoPapiFPV]

Would it be sensible to add a feature to LAND so that when the accelerometer feel any abrupt changes (landing or hitting something) to then do a DROP and kill motors. This may allow for a slower "controlled" decent followed by a disarm on contact. I feel this would not only potentially minimize damage to quad but may additionally give soft targets time to react and get out of the way of a slower moving and object which if strikes would be at a reduced force.

[@Zeesneakyninja]

if a 5 inch quad comes down and a prop hits someone it will do a lot of damage before the quad could find out with how most are setup

[@platty9237]

It floats away as well as down, so it will travel quite far. It won’t just come down like a parachute. Maybe that’s an idea. ;)

[@mpua]

Hey, Joshua, how to fix Failsafe problem for the FlySky receivers in T16? For example, with the X6B receiver, I always get the last levels of the signals when the radio is off, even though I set up NO PULSES

[@noobFPV]

Hi. I have a question. I was flying tyro99, and mid flip I lost video feed. I waited for a second or two than disarmed it. As drone was pretty high when this happened it fell pretty hard ( one motor shaft is bent, strangely no props broke although they are damaged ). What is best to do in that situation ? Is there a way to make it control drop ? I guess disarming turns off motors ( but I did not know what way drone was facing ). How do I activate fail safe on purpose ?

[@Theo-mb2dd]

I didnt understand why i shouldnt put failsafe in land mode. You said that we dont have any way to know if the throttle value we put is making the quad climb or descend. But what if i put a very very low throttle input? Even it wont be precise for a gentle glide to the ground, itll make the drop less harsh, wont it?

[@JoshuaBardwell]

In my opinion it's not a good idea to have the quad powered and PID controller active when you are not actively controlling it. It could land into a person and the PID controller would flip out and spin the motors even though the throttle value is low.

[@Theo-mb2dd]

@@JoshuaBardwell ok i get your point: its better a drone in the head than a spinning drone in the head. But if applyed only to those flights where i m completely alone, like on top of a mountain or in a forest, can i do what i said before? (In trying to find ways to crash less and spend less money)

[@kevincanfly]

This is what I was trying to explain to my flying group!! Thanks for making this public now I don’t seem like a fpv looney.. lol

[@bigpops74]

I've always used "Custom", and make sure I set the disarm channel to the disarmed position. Then I test it by turning the radio off. It always worked, so I never investigated further.

[@JoshuaBardwell]

That's not a good approach because it doesn't cover the scenario where your receiver becomes disabled or disconnected.

[@Diablobb1000]

I can say that with a frsky reciever and INAV it DOES matter. Setting to No Pulses will be interpreted from INAV to the lowest time (988ms) in every channel. This happens BEFORE failsafe is triggered. That means if you e.g. disarm at about 988ms you lose the quad. I painly did the experience. Maybe different with betaflight maybe different with other recievers or INAV Versions.

[@ruftime]

Yes! Pawel ‘s channel is great!

[@SHess65]

Always wanted to know what the options did. Thanks Joshua!

[@markthompson6334]

You are the boss, excellent ... excellent .. top notch quality!

[@mokanin8894]

Hi Joshua, can you just set it to failsafe into ANGLE mode with a very low throttle, so it levels up and falls a bit more gradually than like a brick? Thanks!

[@fpvdave]

When your quad does have a failsafe, what does the OSD display? Today I was flying along quite happily when all of a sudden my quad just fell out of the sky, no death role, all motors had stopped. Upon review, my OSD displayed My Post Flight Stats just as if I had Disarmed. Upon plugging my battery back in, some of that magic smoke escaped from the 4in1 ESC.

[@JoshuaBardwell]

Ummm... if the smoke came out it wasn't a failsafe. Sounds like your ESC took a dive.

[@fpvdave]

@@JoshuaBardwell Thank you for the reply. I wasn't too sure, as I have had an esc fail in mid-flight and the bird just goes crazy spiraling to the ground, where this was just a free fall to earth from a great height, plus the OSD displayed exactly like I had disarmed. And yes, you are right, I do learn something pretty much every time I watch your Channel.

[@anthonyr6555]

I always assume that this is by default. Distance can also do this if you are far away from the receiver my quad a flew away by crossing the highway the quad was too far up for me to call it back

[@geoffreybarton1659]

Hi Joshua I know you have used ezuhf before and wondering if you know what to do. I am having a problem getting my Taranis and x8r to failsafe to RTH as a wireless repeater . I have a Taranis plus > frysky X8r > sbus ppm converter to my ezuhf when i turn off the Taranis the ezuhf goes in failsafe pitch up right rudder and aileron roll over. not a good situation. I have tried disabling telemetry but not sure whats going on. I need 9 channels so i have to get all 9 channels out to the ezuhf. i have D16 set and no pulse but still does not work any ideas what i'm doing wrong. Some videos have used this arrangement but never seen any videos showing the configuration or if the failsafe worked properly when the TX was turn off on a fixed wing UAV

[@JoshuaBardwell]

I'm sorry man but this is so far outside my area I couldn't begin to say. In the Taranis you definitely want "no pulses" set as the failsafe but from there I don't know what might be going on with the EZUHF.

[@geoffreybarton1659]

@@JoshuaBardwell thanks anyway Josh hope your all doing ok over there

[@ЯрославКелдыш]

Imagine you are freestyling 45 mph above treetops and you have failsafe event that is set to "drop". Kwad will continue on ballistic trajectory for another 50 yards or so and it will have about 70 mph velocity at impact. 1 pound hard object at 70 mph can be deadly if it hits a person. And spinning props will be last thing to worry about. But if it switches into "level" it will lose most of the forward momentum and limit descend velocity. I would prefer prop cuts over 1 pound at 70 mph impact. Yea prop can break a finger, but 70 mph projectile can break a head.

[@JoshuaBardwell]

You can tweak the assumptions one way or the other. As long as you've thought it through, do whatever you want -- you're responsible for the outcome. The big reason I don't feel that "auto land" is safe is that it is typically not going to be thoroughly tested and predictable. For example, if you fly in acro mode, you typically would not test your accelerometer before each flight. Accelerometer can become un-calibrated and you wouldn't know until you failsafe. The throttle position that you assume will give you a nice descent could change to one that gives you a climb, depending on the weight of the quad, the props, and so forth. If you test auto-land carefully to the point where you are confident what it will do, it can be useful. Most people are not going to do that, and simply disarming the quad is the safest thing to do in my opinion. Bear in mind that even at low throttle, the props can rev to 100% if the PID controller commands a correction. The chances of damaging an ESC are much higher if you auto "land" into a tree. This is another reason why I feel disarm is the best option.

[@shattereddnb3268]

I lost my baby last week! First I bumped a tree, went to pick it up, and it looked fine, so I armed and started flying again. But I guess a cable came lose from the RX cause I got RXLOSS a few seconds later, but instead of failsafing it just kept going off in the distance never to be seen again. I thought I had been a good boy and setup failsafe correctly, but apparently not. Any ideas on what I might have done wrong?

[@Dav2112]

Nice video man, I never touch anything in that tab as I had no idea what they did, you’ve done a good job explaining it all here.

[@kanemarsh7979]

Hey jb thinking is it like my rc buggy because I bound it with throttle in the brake position. It will just shut off I've never had a issues with quads or buggys on fail safe? So when my buggy fail safe's it stops same as a quad if it's in the air will just fall out of the sky

[@paulmccracken1326]

Not related to this video but have a question and can't find a video regarding it. I just installed a new diatone gt m3 fc. When the quad is level on bench and connected to betaflight, the model in setup tab is flipping and rolling and going crazy. Sometimes itll act normal and then all of the sudden start acting up again. With a lipo plugged in and props off it makes the motors start going crazy when this happens. Bad accelerometer? If so is replacing fc only option? Thank you for your time and truly enjoy your work.

[@paulmccracken1326]

Also, in sensors tab it appears gyro and accelerometer are not right.

[@JoshuaBardwell]

This is a bad gyro. New FC time. If it's brand new reach out to the vendor or to diatone for replacement.

[@paulmccracken1326]

@@JoshuaBardwell Ok thanks again, I'll reach out to diatone as I ordered directly from them.

[@dalewhitmore143]

what about horizon mode wouldnt it be better say if your in a roll and it failsafes, it would auto level atleast right?

[@tiagotiagot]

Wouldn't setting it to land but with zero throttle reduce the damage of crashes by keeping the quad level when it goes down, by both decreasing the terminal velocity by exposing the maximum cross-section in the vertical direction, and also by reducing the odds the quad will hit arm first, distributing the load of the impact over more of the frame, while still mostly preventing a flyaway condition?

[@wadetubman]

Great one! it would be great if you could cover off the different failsafe situations, and how to diagnose - out of range, fault with radio link (transmitter issue, antenna issue), RX failure (power/brownout). Would also be good to cover off why the different RSSI methods (which you have covered) give different values and are more or less reliable

[@c0y0te007]

Why would you not activate beeper on failsafe stage 2? This will surely help you locate it?

[@JoshuaBardwell]

Beeper activates by default on failsafe

[@62heliman]

When binding do you have to have the switch in fail safe position? Then the receiver will think that its a command then from the transmitter.

[@AbhiWeltig]

Hey Joshua I have a quad and when I do a multimeter test there is no beep for continuity. Then I will do the test 5 min later and there will be a beeping tone. I don’t know why this is happening. The esc boots fine when there is no tone. I really could use your help. Thanks.

[@JoshuaBardwell]

If it beeps a very short beep and then stops, it's just the capacitor charging up. It's okay.

[@AbhiWeltig]

Joshua Bardwell but if it sometimes beeps consistently. Then I wait 4 min and it doesn’t beep at all.

[@anthonyr6555]

Full Throttle without any communication with the transmitter. I would think you would keep on going because it has the battery pack it's locked in I know for my Syma if I go a certain distance the quad seems to stop as if in a box the quad would kind of fall

[@DRAAAGONEARZ]

I swear it feels like your listening in on my convos🤣🤣🤣👽👊

[@vyoufinder]

How about this for a reason not to set to "no pulses?": If I have my copter set to return to launch and then land when failsafe is activated, and my landing gear uses PWM... Will I land on my gimbal? I learned something(s.) Thanks.

[@Billbobaker]

What about rc airplanes i've tried several ways and the throttle and servos simply hold and continue?

[@JoshuaBardwell]

Need to set position in the receiver. Typically this is done by holding the sticks in the desired position and holding down the failsafe button.

[@jackdaniels7913]

Sorry! I run failsafe land with a 3.5 sec drop at a fast but safe drop rate determined by my ground effect hover, it has saved me a few times now but I fly in remote locations far from anyone and anything! My worst fear is catching a tree on decent and cooking a motor or esc.

[@JoshuaBardwell]

Your ground effect hover position will change depending on the size of battery and whether you are carrying a GoPro, or other factors that could change thrust or weight. It's why I don't think it's safe to trust.

[@jackdaniels7913]

All valid points and I have taken this in to mind and only run the same setup every time! Never changes but still a very valid point and thank you for your response you have thought me so much about the hobby it's not funny, in short if it wasn't for you I'd probably never had the nerve to order my first fpv setup including the HD3's with the laforge witch I followed your step by step guide on internal installing before I even fired them up! 😅😉 thanks again and keep up all the grate work!

[@andrehope8994]

When the cinewhoop just drops, like losing all power what is the good steps to start with?

[@thetomekyo]

NO PULSES - I actually checked this and it seems to be incorrect. While using a SBUS receiver and setting FS to "no pulses" I switched off my Taranis and at the other end the signal literally disappeared> I did it using an oscilloscope and the "pulses" comming from the receiver to the FC were really gone ...

[@desidudes78]

seems like a good plan would be to set it to angle mode during stage 1 with a fixed throttle at approximately hover value. Thoughts on this?

[@JoshuaBardwell]

Definitely not for stage 1. Then if it goes into stage 1 briefly and comes out, it will jerk and you may crash. Better that it just lock up and keep doing whatever it was doing.

[@framed166]

Have you ever gotten one of your quad stuck really high in the trees in the middle of your driveway?

[@JoshuaBardwell]

Not so I couldn't retrieve it with turtle mode.

[@neilbalch]

Still don't know how to configure failsafe modes on FlySky iBus. I've tried to figure it out several times, but it doesn't appear to have any "no pulses" option

[@toddbeal4373]

Failsafe is in the radio. It is set by making the sticks 100% or zero. But you have to be very careful with this. Bc if you failsafe and your throttle is even at 25% it will take off like a rocket, witch I do not like at all. But there isent anything in there about pulses or hold. There are a few videos on how to set this up, but just remember what I said about when you set it, and what it will do.

[@neilbalch]

@@toddbeal4373 Hrm. okay.

[@robwaters3080]

Hey Joshua, thanks for the clear and informative video on Failsafe. I've always defaulted to using No Pulses, ever since I watched one of the Project Blue Falcon videos. Also, that CL1 build looks nice! I'm still trying to get my Rooster put together, the set of standoffs is still really tight.

[@chadfontaine2717]

My failsafe is RTE. Return to earth. Battery craps out. No problem. RTE has got you covered. Motors crap out. No problem. RTE has got you covered. Lawn dart you quad into the ground. Well. No. RTE cant help you there.

[@rafayczkowski2757]

Brilliant narration! I love the content though. Cheers from Poland

[@GardoRotor]

I'm really wanted you click over to your "modes" tab... How do you have so much going on with aux 1? (Beeper, turltle mode and arm) Just wondering....

[@J4NGL3]

Now where is that GPS rescue link in video description? I can't seem to find it. :)

[@JoshuaBardwell]

kzbin.info/www/bejne/eJC8nWOtpreZbJo

[@gingermanc]

I'm not certain about this - but I am assuming that your demo of HOLD failsafe - by turning off the TX may be flawed. It's possible that the TX sends a command to say ( i'm turning off ). A better test would be to remove the battery from the TX to fully test this. eg don't give the TX time to do anything gracefully. Please let me know if I am wrong anyone.

[@JoshuaBardwell]

That's not how the TX works. It doesn't do that.

[@tongyong1867]

Thanks for your clear and informative advice.

[@samcorney216]

Thank you for all your videos they have helped me out a lot love them 👍🏾

[@RCOverKill]

Hey J.B. my qx7 is starting to failsafe to close with different models, the antenna is good, and the connection is good. Is there anything you know to check? Im hoping by using an r9m module ill bypass whatever ptoblem im having. Thank you!

[@JoshuaBardwell]

It could be the radio module is damaged. If it's happening with multiple receivers then that's more likely.

[@RCOverKill]

@@JoshuaBardwell will installing the r9m bypass this problem?

[@JoshuaBardwell]

Yes. If that's the problem.

[@RCOverKill]

@@JoshuaBardwell I appreciate your help, I guess either way it wont be a waiste to try this 1st. Have a great weekend !

[@avarice3k7]

Thanks for the detail and explaining the "why"

[@Wildicon19]

Thank you Josh for the informative video!

[@philevans4021]

You would use hold on a quad with GPS

[@kyserfpv7312]

Hello I am French, I tried the landing mode in failsafe and I have two engines out of 4 that turn, if you can help me thank you

[@isbestlizard]

i'm guessing this means the minimum and maximum valid pulse range settings in Failsafe are redundant too if connected on sbus? that's cool I get it :D

[@hcmaclub5905]

I usually set mine to custom with the RTH switch engaged. That way it starts RTH at loss. Is that bad?

[@JoshuaBardwell]

If your quad has return to home, that's a fine failsafe option.

[@MrQuijibo]

Why would you expect the radio to keep outputting pulses when you turned it off?

[@JoshuaBardwell]

The receiver is what keeps outputting pulses.

[@MrQuijibo]

Interesting, thanks

[@nickmcbride1208]

So if the hold postion does the same thing as no pulses then what was it originally intended for

[@JoshuaBardwell]

Fixed wing planes with servos and no flight controller. In that situation, the receiver is the only failsafe.

[@nickmcbride1208]

@@JoshuaBardwell oh ok cool thanks

[@nickmcbride1208]

@@JoshuaBardwell i just found something interesting thought you might like and you might have already seen it i think you can just goggle this to look at it its called project mockingbird v3 and the tiny hawk and dude says that all whoops fly better with this but its been optimized for the tiny hawk in acro

[@JerryCalverley]

Great information as usual. I can always count on learning something today.

[@sushia.f.1809]

Kick ass vid. Needed this. the dreaded Failsafe explained! Now... Defunk this Heliospring mess that is updating the IMUF and their new UI. What is FU, Odin, Sim mode and how the hell does one get any intelligible information on it? It is such a different animal from the naming to the process to just... Ready to toss this board out the window!!!! GHHHHHHHGGGHHHH

[@micstuvi7228]

Great video! Do you make a video how to set a crossfire failsafe with betaflight rescue mode on? Please

[@JoshuaBardwell]

kzbin.info/www/bejne/eJC8nWOtpreZbJo Crossfire or any other failsafe, it's all the same. Make sure the receiver is set to no pulses. For Crossfire, this is called "cut".

[@craign6443]

Another great video Just a quick question have you used the betaflight phone app and if so is it any good

[@JoshuaBardwell]

The one I've used is Speedybee and it's pretty good. But with some versions of betaflight it zeroes out certain settings without warning you, so I don't use it much.

[@DamageincFpv]

You did this vid. i think last year? are we in syndication

[@JoshuaBardwell]

No, I definitely did not do this vid last year. I may have done a similar vid, but specifically the point about failsafe working regardless of HOLD vs NO PULSES is new.

[@UA_RC]

Almost all fc have barometer, why not used it for fs landing to calculate heigh?

[@JoshuaBardwell]

If the FC has barometer, Betaflight does use it. Many FC do not have barometer though. Barometer and GPS is not accurate enough to do precision landing. You really need sonar for that.

[@scooterpie1143]

Very informative, Thank you!

[@MCsCreations]

Fantastic, JB. That's a really interesting topic!!! 😊

[@ArturPetrzak]

Thanks Joshua! You pronounced "Paweł" really good! Keep up the good work You are doing here ;)