I have a uSpirit and Geolink on a 230S. I flew a day with good battery’s and no problem.
The following day I flew and the servos where going up and down while in flight, you can see it in the following video.
It happened to me before and I had vibration messages but no loss of voltage. Any idea what can be happening ?
I am scared the 230S BEC does not have enough power ....

You will find the video in the following Dropbox directory
https://www.dropbox.com/sh/b2ac4c5755k6 ... o3Rqa?dl=0



Envoyé de mon iPhone en utilisant Tapatalk

I am afraid but this issue is caused very likely by a static discharges.

In the Spirit flight log you will maybe see error messages about your receiver signal.
Also in the Diagnostic tab you will probably see how the channels are jittering.

This issue is not related to BEC.

_________________
Spirit System developer

Thanks for the explanation.

I would not think I would have static discharges with this heli, could this influence as well the geolink and explain the issues I am having ?

I have read this happens on some heli with belt, should I ground from tail motor to main motor ? Any other tips ?


Envoyé de mon iPhone en utilisant Tapatalk

If you are going to ground the tail system, ideal solution is to ground it to your avionics (receiver) battery negative - if you have one. This will allow current to completely bypass the avionics on your system as it goes to ground, while also protecting those avionics. Covering open, empty servo ports on electronics with a small piece of electrical tape also works very well to prevent a static discharge arcing to the servo pins.

If you do not have a "avionics" battery, only a motor battery (because you have an onboard BEC), then ground to the motor battery negative terminal.

Grounding to a motor is not ideal at all, as a motor does not maintain a constant ground (it's isolated as the motor phases switch). A large, metal motor plate can work, because it acts like a ground plane, but going straight to the negative terminal ("ground") directly is far, far better.

Not sure what material your frame or tail boom material is, but remember that if it's carbon fiber, you must remove the clear coat / epoxy completely at your grounding points - it is a very good electrical insulator! An intermittent ground contact in some cases is worse than none at all, as you can end up with horrible RF noise.

Thanks for the info, I do have a BEC, I will try to ground on the battery, did not think about the pins open on the FBL.

And the boom is aluminium so I will see how o touch the tail motor with a connections that works.

At least now I know why the servos go nuts, never taught it could happen on this small heli... worst case I could spray water mist before a flight.. hahaha..


Envoyé de mon iPad en utilisant Tapatalk