Don't know exactly what happened. Had 3 successful 3-5 minute flights in stabilize, autotune, and loiter modes prior to attempting autotune. During first flights quad was generally stable but much less smooth than my brother's quad with similar configuration.

Every few seconds quad would "glitch" very slightly. Just a few degrees / feet then return to stable flight. I was hoping autotune would eliminate this behaviour. Partway through the autotune process, about 3/4 of the way through the attached tlog the quad began to act erratically, I no longer had control and it flew up about 20 feet and to the side about 20 feet at what seemed like full power. It did not respond to any input.

I cut throttle, switched back to stabilize, and let it come crashing to the ground before it got somewhere anything could be damaged.

After rushing to the quad the back left motor (2) was much much hotter than all the rest of the motors.

Any thoughts? Thanks guys. I'd hate to put this back in the air without fixing the underlying problem.

2014-08-31%2019-26-52.tlog

Thanks,

Zach

You need to be a member of diydrones to add comments!

Join diydrones

Email me when people reply –

Replies

  • HI Guys 

    Please read the page linked below. 

    http://copter.ardupilot.com/wiki/autotune/

    Also see the warnings at the bottom of the page as well as what to include in logs. 

  • Hi.  Sorry I cannot help, but your issue sounds similar to mine.  I posted this ( http://diydrones.com/forum/topics/autotune-problem ) yesterday.  My quad will start autotune and at some point during the tuning it tilts and takes off at what seems like full throttle.  I have been lucky enough to save it every time, but it has happened over 15 times that I have attempted autotune.  There is a video in my post.  The quad takes off to the left, but I catch it in time.  I hope you get your issue figured out!

This reply was deleted.

Activity

DIY Robocars via Twitter
RT @chr1sa: The next @DIYRobocars virtual AI race is tomorrow morn at 9:00am PT. You can watch live on Twitch https://www.meetup.com/DIYRobocars/events/275268196/
4 hours ago
DIY Robocars via Twitter
New version of Intel OpenBot! This resolves many of the issues with the first version, including a much smoother tr… https://twitter.com/i/web/status/1352395636369313798
23 hours ago
DIY Drones via Twitter
Using ArduRover with an RTK GPS https://ift.tt/2N9I3RO
Tuesday
DIY Drones via Twitter
Monday
DIY Robocars via Twitter
Monday
DIY Robocars via Twitter
Jan 15
DIY Robocars via Twitter
Jan 15
DIY Drones via Twitter
Jan 14
DIY Robocars via Twitter
RT @Heavy02011: @diyrobocars : A Home-brew computer club* for Connected Autonomous Driving on Jan 23rd, 2021 https://www.meetup.com/Connected-Autonomous-Driving/events/275728684/ #Meetu…
Jan 14
DIY Robocars via Twitter
Jan 14
David Hori liked Isabella Domi's profile
Jan 12
DIY Robocars via Twitter
RT @Heavy02011: ⁦@diyrobocars⁩ Autonomous Driving Assembly at #rC3. join us at https://rc3.world/rc3/assembly/diyrobocars-f1tenth/ ⁦@f1tenth⁩ ⁦@DAVGtech⁩ ⁦@DWalmroth⁩…
Jan 11
DIY Robocars via Twitter
RT @chr1sa: New car designs coming for our next @DIYRobocars @donkey_car virtual race on the 23rd. Choose any one you want at race time Le…
Jan 11
DIY Robocars via Twitter
RT @RoboticMasters: Thanks to @EllerbachMaxime and the Sydney Uni Capstone Students the @donkey_car @diyrobocars simulator is getting a ma…
Jan 11
DIY Robocars via Twitter
Jan 6
DIY Robocars via Twitter
Dec 28, 2020
More…