Mobula7 O4 2S First Flight: Why Is It Uncontrollable?
Ok first flight today of my Mobula7 O4 2S (if I can that a flight) ;) .. I smoothed the flight parameter and still... look at how crazy it flew!.... it goes crazy not controillable and I dont know what parameter to affect: https://youtu.be/9i9sQznD3Uc what am I missing again!
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82sem. (modifié 82sem.)
hey.are you sure the propellers are not mounted upside down? at 80% throttle it should be crashing in the ceiling and not crawling around at ground lvl.
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82sem.
Auteur
I was able to make it fly but it goes crazy!! (But yeah the engine are mounted OK)
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82sem.
@jfpoulin Correct engine mount ≠ correct propeller mount. Make sure the raised side of the prop is on the leading edge of rotation (rather than the trailing). That whoop should be hovering around 20-30% throttle, if not even lower - the fact that it isn't means that something is preventing the quad from properly lifting off and, especially early on, the low hanging fruit is to check that your props are installed correctly.
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82sem.
Auteur
@BlaqkstarFPV look at this... it makes it clearer! One of the engine is not reacting well... AND it all goes crazy event if I cut the gaz... https://youtu.be/WYg59bKSzmI
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82sem.
This seems like normal behavior. It's basically impossible to maintain stable hover that close to the ground.
When you hold an armed quad in position 2 motors will go nuts trying to raise one side, high side is trying to make as close to zero thrust as possible, when it's trying to correct for yaw it must spin whatever prop on the low side that will generate rotational force to counter external force rotating the craft. You think you're holding it still, but the flight controller is trying to correct for the slightest movement, airmode makes the quad over react to every bounce on the ground, the "hover" should be at like 30-60% throttle. If that's the case pop the throttle past 60% for half a second to get off the ground into clean air, then hover at like 1 meter; it should take many tiny corrections from you and it's very hard to hover perfectly still.
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82sem.
I think the bench test might show it could use a higher dynamic idol is all... if that's a bind and fly drone it sould be configured good enough already.
If the motor was stopping and twitching like that only upon first arming at zero throttle, I would think the esc setting called start up power needs to be increased. Chris Rosser says that setting can be maxed out for whoop motors.
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