QUAD CRASH in Auto mode due to "throttle cut off by APM" dont know y it happend....
ive been flying the quad many times in auto mode...... but all the time i was using waypoint command and was happy with the performance of the quad! it worked fine..... the only thing which i noticed was when the quad reaches the last waypoint, it just start landing on its own at the last waypoint !
I did this many times and was pretty shure what my quad will be going to do next...... so now i thought to include auto take-off into the flight planner.......
so the only change which i made to my mission was adding a take-off command in the beginning followed by the waypoints...... and i was knowing that at my last waypoint its going to land.....
the take-off was good...(the throttle rise by the APM was bit slow) and the quad was airborne within 20 seconds and then followed the flight path...... my last waypoint was at 10 meter high and wait for 5 seconds and then it should land,
but this time the APM board just killed the throttle of all the 4 motors to zero and quad dropped like a stone from 10 meter height at last waypoint..... could not get what went wrong ...? please help me to correct my mistake!
mission file , flight log (crash @97.4%) files are attached
Tags: APM1, auto, automatic, crash, cut-off, error, land, landing, mode, point, More…
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APM IMAGE.png, 889 KB -
2012-06-10 09-58-24.tlog, 547 KB -
autonomus flight crash as on 9th june.txt, 1 KB
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Replies to This Discussion
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Permalink Reply by Jake Simon on -
Do you have sonar installed?
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Permalink Reply by Geeteshkumar Shakyawar on -
ya... it is installed
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Permalink Reply by Jake Simon on
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If you have sonar installed and enabled and you are able to test it using the CLI, then it might be a failure that occurs in the APM 1 hardware. There is something about the APM 1 dropping out of the sky in the Troubleshooting section of the wiki.
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Permalink Reply by Geeteshkumar Shakyawar on
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ya m using APM1 ....... but wont able to find the page that u r reffering to.......
is it this page...?
http://code.google.com/p/arducopter/wiki/AC2_Troubleshooting
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Permalink Reply by Jake Simon on
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I thought it was there but now I can't find it either...
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Permalink Reply by Matheus Z on -
One of the bug fixes of the last ArduCopter revision is:
- RTL bug would land if rtl_approach_alt was more than 1 [Jason]
I think it must be related to your problem as your copter "landed" from an altitude of 10m. Check for the rtl_approach_alt parameter. Even if correct (set to 1) update to 2.6 to get better results.
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Permalink Reply by Geeteshkumar Shakyawar on
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this is interesting .... will go through the parameters and let you know.... thank you Matheus...
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