P3 takeoff algorithm

[jaywils]

Why does the P3 "rev its engines" twice before actually lifting off. It's not a problem but is there a reason for this or is it a bug?

 

[BigKenny]

this is a self check on startup (not takeoff). Probably just making sure everything is working with the motors and responsiveness.

 

[N017RW]

The most common reason heard here is to set the props (i.e. selt-tighten) others have said it may also be some sort of self-test for the ESC.
I cannot confirm this with any documentation.

 

[snowghost]

Mazda: zoom, zoom.

 

[doctordrone]

It sure is irritating... If the drone is sitting on something unstable and not completely level, it just about tips over when it does this "double rev". My heart skips a beat when I see her rocking...

 

[bbfpv]

It sure is irritating... If the drone is sitting on something unstable and not completely level, it just about tips over when it does this "double rev". My heart skips a beat when I see her rocking...

Your heart would skip more than a beat if it didn't zoom zoom and the props spun off mid flight

 

[Trumple]

It sure is irritating... If the drone is sitting on something unstable and not completely level, it just about tips over when it does this "double rev". My heart skips a beat when I see her rocking...

Don't take off on an unstable platform then

 

[Mako79]

The most common reason heard here is to set the props (i.e. selt-tighten) others have said it may also be some sort of self-test for the ESC.
I cannot confirm this with any documentation.

I think so too. The 2 quick slow-fast revs sounds the like phantom is torqueing the props.