Unstable CrazyFlie 2, odd yaw also
Posted: Sun Jul 03, 2016 4:09 am
Hi
So we've had our CrazyFlie 2 for a while but only just decided to try to get it to work "properly". We've had some previous half-hearted attempts, but were unable to fly it, and put this down to our lack of previous drone-flying experience.
But having read some comments here about how stable this drone is supposed to be, I'm starting to think there's something wrong with ours. A couple of things. First, the Yaw reading on the client app is ever-decreasing or increasing, even with the drone just sitting on a flat table, at about 0.2 per second. Second, we need a huge pitch trim (20) to stop it darting backwards on take-off. Third, even with that huge pitch trim, it seems to be quite random in its "flight", with no controller input other than thrust, using either the python client app or the ios app, and getting it above knee level, it hardly ever goes straight up. It rather more randomly goes left or most often backwards. It's unpredictable, at best.
It seems slightly more stable with the ios app but this is not based on a large enough sample flights to be certain about.
It has the latest (16/02) firmware.
And it has always behaved in a similar unpredictable way.
If I hold the drone and tilt it, the artificial horizon the app seems to change as I would expect. The drone passes self-test. We have used a small cable tie to securely fasten the battery in place, it can't shift around.
Not sure what other information to add.
We're pretty disappointed at this point, this was a fairly expensive first foray into drones. I'm hoping we can get this sorted out.
So we've had our CrazyFlie 2 for a while but only just decided to try to get it to work "properly". We've had some previous half-hearted attempts, but were unable to fly it, and put this down to our lack of previous drone-flying experience.
But having read some comments here about how stable this drone is supposed to be, I'm starting to think there's something wrong with ours. A couple of things. First, the Yaw reading on the client app is ever-decreasing or increasing, even with the drone just sitting on a flat table, at about 0.2 per second. Second, we need a huge pitch trim (20) to stop it darting backwards on take-off. Third, even with that huge pitch trim, it seems to be quite random in its "flight", with no controller input other than thrust, using either the python client app or the ios app, and getting it above knee level, it hardly ever goes straight up. It rather more randomly goes left or most often backwards. It's unpredictable, at best.
It seems slightly more stable with the ios app but this is not based on a large enough sample flights to be certain about.
It has the latest (16/02) firmware.
And it has always behaved in a similar unpredictable way.
If I hold the drone and tilt it, the artificial horizon the app seems to change as I would expect. The drone passes self-test. We have used a small cable tie to securely fasten the battery in place, it can't shift around.
Not sure what other information to add.
We're pretty disappointed at this point, this was a fairly expensive first foray into drones. I'm hoping we can get this sorted out.