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Andy7:
19 Aug 2019 09:14:20
Good for you!  ~~
DarkButterfly:
18 Aug 2019 19:13:57
Had another negative encounter, it's been a few years since the last one, just an uneducated ******, going on about drones being illegal yada yada yada.    :-/
Still that didn't spoil my flying time, had an absolute blast  ~~
Gaza07:
07 Aug 2019 19:52:01
ooooh mrs jones  :D
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30 Jul 2019 15:26:34
D.B. you tightwad.. :cool:
atomiclama:
29 Jul 2019 20:14:10
DB that just means you have shed loads of props in the first place ;-)
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29 Jul 2019 18:53:33
Just had a thought, even with all the crashing I've done, I haven't bought any replacement props in over a year ~~
ched:
09 Jul 2019 19:45:42
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09 Jul 2019 18:10:30
Hope you all have a great day  :beer2:
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09 Jul 2019 14:05:28
BFU#8 details locked in for this saturday - see the head of the forum thread for all details.
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05 Jul 2019 21:51:05
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Any suggestions for fail safe

Started by sturgm, Friday,August 09, 2013, 13:12:38

Previous topic - Next topic

sturgm

I have have at last managed to get my quad very close to where I want to be ( special thanks to Rickp on this one).

My vibrations are down to +- 0.3 and my compassmot is at 13%

It hovers great.  Loiter barely moves, even in a brisk wind.  It really does fight to stay in position and hold it';s height.
RTL works like a charm.

So I am looking for a Fail save strategy

Any ideas ?

PS the APM is a 2.6 with separate GPS and compass

Hands0n

I would say to look to implement RTL based on manual switch AND signal failure from the TX.  I don';t think it important that RTL causes automatic landing to occur, once you have local sight of the aircraft you should be able to return to one of the manual modes to control what happens next.

But also ensure the aircraft has some identification so that if lost it can be returned to you if/when found. Also a "lost aircraft" audio alarm that activates on loss of or no received input from the TX after a period of time. 

I am not sold on simple Auto-Land strategies - useless if you';re over water or off the edge of a cliff or similar.
--
Danny
"Its better than bad, its good"

Current FCs: Pixhawk, APM 2.6, Naza M V2, Naze32, Flip32+ CC3D, KK2.1.5
Aircraft: miniMax Hex, DJI 550 (clone) TBS Disco, 450 Firefly, 250 Pro, ZMR250, Hubsan X4, Bixler 2

kilby

As I discovered (if you mean rtl type failsafe) it can also be dependant on the receiver that you are using.

Im using an apm 2.5 and so far no compass problems (just my crappy piloting)

My spektrum 610 does a nice controlled descent to the ground but doesn';t return home (not good if over water)

The Orange rx gives me full rth on signal loss, but poyentally has a bermuda triangle for reception at the flying club that I have started attending
Not much kit, but what I have I like
Armattan Tilt 2, Morphite 180, Quark 150, Decapitated NanoQX
Taranis+

sturgm

Thanks for the suggestions.  One of the main reasons I ask is because of this.

http://www.multi-rotor.co.uk/index.php?topic=553.msg4178#msg4178

I posted this last year.  I really do not what to go there again.

I have not looked yet, but I am guessing that I could do a RTL on loss of signal ?
what about low battery ?.  I have a 3DR battery module fitted as well.

Any idea how long the battery would have left ?  I noticed that the RTL speed was quite fierce
and I was standing too close to ';home'; and had to run out of the way as it over shot by a few feet
to where I was standing!

I have now modified the return speed to 250 from 500.

Any other events worth noting ?

Thanks

kilby

In the current Mission Planner version there is an option for failsafe on low battery voltage (user definable value)

However I have not used this and I can';t test it at the moment (my quad is hospitalised because I forgot to disable throttle cut after reinstalling the Orange receiver :( )

On the current versions RTL on signal loss definitely works because I tried it, but results vary depending on the receiver used.

What receiver are you using (I';m also told that the Turnigy x9 can be a bit funny about failsafe)

Peter King has a couple of videos regarding configuring failsafe on APM quads http://www.youtube.com/channel/UCQx4lLeXHIzZPBBDHC50O2w
Not much kit, but what I have I like
Armattan Tilt 2, Morphite 180, Quark 150, Decapitated NanoQX
Taranis+

Hands0n

Quote from: sturgm on Friday,August 09, 2013, 15:22:17

I have not looked yet, but I am guessing that I could do a RTL on loss of signal ?
what about low battery ?.  I have a 3DR battery module fitted as well.



My view is that RTL on Low Battery is unlikely to be too viable.  Depending on what the low limit is set at you are more likely to find that there is insufficient battery to get back to home and land.  So typically a controlled landing is what is required - just make sure you';re not over a loss-potential such as cliff, open water or other hazardous location.

I prefer using one of those low battery audio alarms - you can hear them for miles. Just set it at a sufficient level for you to bring the aircraft back to a safer area and then hit up the RTL or land it as quickly as you safely can.
--
Danny
"Its better than bad, its good"

Current FCs: Pixhawk, APM 2.6, Naza M V2, Naze32, Flip32+ CC3D, KK2.1.5
Aircraft: miniMax Hex, DJI 550 (clone) TBS Disco, 450 Firefly, 250 Pro, ZMR250, Hubsan X4, Bixler 2

peter_a

I`ve set my battery fail_safe with about 6 minutes of battery life and also via switch , but not set it on Rx going out of range until I get out of the habit of switching my Tx off first , but not sure if that is a problem anyway with the naza if I`ve allowed it to disarm.   

firey1

if you use the buzzer on the apm I have mine for arm/disarm it also acts as a low battery warning i used one from a lost plane alarm as it already has the power driver in it and can just be plugged straight onto the pins and if the quad does go down will continue till disarmed or battery goes flat
A good cheap light safety device
MIKE

550 RC Spider quad for FPV
550 Alien quad (my sons now)
F450 quad
450 size bell 212, MD500,Augusta 109
600 size Huey running apm 2.5  3 planes  Taranis and 9xr  radios Skyzone FPV goggles

sturgm

Thanks all for the great ideas.  I will have a good think and see what suits for me.