Crazyflies random crash & related issues

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Leopardopt
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Posts: 15
Joined: Wed Mar 31, 2021 2:40 am

Crazyflies random crash & related issues

Post by Leopardopt »

Hello,

I have been working with two crazyflies for a while now and I have noticed that at random points, one or two of them tend to flip over or move out of range in middle of a python code run. Would you know what would be the cause of these random flips? Since I have tried to charge the batteries close to max before each take off.

Sincerely,

Leopardopt
arnaud
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Joined: Tue Feb 06, 2007 12:36 pm

Re: Crazyflies random crash & related issues

Post by arnaud »

Hi,

What positioning system are you using when that happen and what estimator/controller are you using? Can you maybe send a minimal python script where the problem happens so that we can test it here as well?
Leopardopt
Beginner
Posts: 15
Joined: Wed Mar 31, 2021 2:40 am

Re: Crazyflies random crash & related issues

Post by Leopardopt »

Hello,

I am using the lighthouse deck with two V1 basestations. The python code that I am using is the regular swarmSequence.py with minor changes to the sequences. It sometimes works and most times crashes while doing the test with a second drone. The distance between them is enough to be able to avoid crash into each other but the drone behind the first drone ends up crashing in middle of the sequence run.

Sincerely,

Leopardopt
arnaud
Bitcraze
Posts: 2501
Joined: Tue Feb 06, 2007 12:36 pm

Re: Crazyflies random crash & related issues

Post by arnaud »

Hi Leopardopt,

This is odd, we have not observed such a crash for quite some time (my experience with LHv1 in faires is that I got Crazyflies going up and down (Qi charging) for 8 hours without crash).

I will run some test on Monday in our flight lab to try to reproduce the problem. It is possible that a bug has appeared. The fact that it does work with one tend to show that the lighthouse system is not at fault and something else is happening, but I cannot think of anything that could happen so maybe I will find something while testing ...
Leopardopt
Beginner
Posts: 15
Joined: Wed Mar 31, 2021 2:40 am

Re: Crazyflies random crash & related issues

Post by Leopardopt »

Hello,

Thank you for taking the time. In my case, the second drone that crashes half-way tends to flip over when crashing. Also, I have noticed that the battery is another issue because if the drones begin to fly, the batteries discharge twice as fast and so they need to be above 4.0V before each flight. I wish I could send you a video of what is going on but I can't attach videos here.

Sincerely,

Leopardopt
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