The fun stuff starts around 1.30 ..

 

This is what can easily happen when too confident and not enough prepared, when you get caught in some unexpected altitude windstream, even a little one

 

To sum it up .. suicide mission ; Had no fpv, no lights, no simple or rtl mode programmed

 

The panasonic was found split in two, but amazingly , the copter only bent one arm; i repaired since then . Am now waiting for a brand new gopro hero2 and a brand new 5.8gzhvideo rx/tx ; The one i had refused to start (old 1.3ghz ), made me loose patience and take off anyways there up .. will not do again :)

 

dCopter just before flight, complete payload

Views: 1146


Moderator
Comment by Michael Pursifull on November 1, 2011 at 6:50pm

Ouch Anis. Well, we learn more from our failures than from our successes. I hope you like the new gopro.

Comment by Anis Nielsen on November 1, 2011 at 9:10pm

yup i bet a lot of us concur ^^

I am very happy to learn that the center part of the hexa frame is rock solid, only broke the arm holding nuts and the arm itself and a foot (and all props) but no motor damage (at least no apparent for now, ive flown like 30min since )

 

The old panasonic still works in direct av mode, but can't play anymore (i didn't try rec), and no more screen display .. Raaah still waiting for the gopro ! it'll be christmas before time ! :)

 

 

Comment by arashi on November 1, 2011 at 10:52pm

I've had that feeling.  At least you found it right away.

Comment by Anis Nielsen on November 1, 2011 at 11:46pm

yes, i was also afraid to have lost it far away on private land but it wasn't as far as it seemed (300m) , i just ran in the direction of crash following the only possibles roads available, until i heard the apm/esc beeping loudly, that was close too

Arashi, have you implemented a working solution  for quickly pinpointing where it is ?  (i have no xbee to log wirelessly ..for now ..  i guess this, with an osd will pretty much cover most loss/crash cases ?) 

Comment by patrice.rance on November 2, 2011 at 4:19am

Ha Ha it remind me some bad experiences too :) a lot of adrenaline !!!!!

Don't forget to put a phone number on your quad ! can help.

And always have Return too Lunch Ready :) or Loiter or Simple Mode (can save your life !!!)

Comment by Rui Manuel Cravo Marques on November 2, 2011 at 4:37am

lolololol I too have experienced similar results. On one auto mode flight, my quad started climbing and instead of bringing it down, I waited to see if it corrects the alt... no way, when I tryied to bring it down, I could not understand how fast it was coming down, and add the downdraft effect to that, you get a quad-meteor :) i was lucky too, only one broken arm, one broken motor support and a fully bend landing gear wich I managed to repair. The carbon center structure survived with no scratches, motors and ESCs were ok and the electronics... it cost me an oilpan (that hurts) :)

 


Developer
Comment by Jani Hirvinen on November 2, 2011 at 5:37am

Aaah she's a beauty on lower picture.. Glad that you did not loose it. But yeah we know that frame is rather strong and can handle big bangs really well. Anyways if you ever need spare parts, I know from where to get ;)

 

Comment by arashi on November 2, 2011 at 10:09am

@Anis - Thankfully I live next to vacant land.  I thought if it got lost, I could just go out at night and look for the leds and noise from the motor.  Problem is that the battery is the heaviest part and always disconnects first, leaving the no leds or beeping.  I've started putting a low voltage screamer attached to the balance port and the battery itself as a sort of failsafe.

 

I have xbee telemetry, but rarely setup the laptop ground station for stability/endurance testing.  I am starting to fly over a mile from home (over vacant, private land) and use it every time just for the lat/long incase it goes down.

 

There are inexpensive radio frequency beacons that I have thought about using for fixed wing stuff, but I never thought I would need it for a quad.  There is a guy from Israel on rcgroups who makes some neat beacons and has them for sale.  You can just use an inexpensive FRS handheld radio and your body as a attenuator to find the beacon.

Comment by Jack Crossfire on November 2, 2011 at 1:50pm

Beauty crash.  Can't understand any of the writing, but this is what keeps the diydrones store in business.


Moderator
Comment by Grips on November 3, 2011 at 3:25pm

I am sort of perturbed by two of these sort of videos within the last month or so, where someone who did not know the limits of their copter nearly crashed it in to a commercial area.. I really do not think its a good idea for these videos to be shown or have DIYDRONES associated with such 'near misses', because that is exactly what it is. Sentimentalization of the media would take one of these videos and run with it to demonstrate how they should be outlawed.

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