Jonathan M's Posts (2)

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Pending Californian "Drone" Legislation

images?q=tbn:ANd9GcTRLa9nVm2iqzgSt__KTtAwdqP8ImPG2_I4JKt59VZgzRL7x8fVy_4j2M8OThis may or may not be old news, but I thought it worthy of a post since many of us reside in this lovely state (including 3DR):

While I am hopeful that this doesn't result in a blanket restriction of all personal RC's with cameras, etc, recent fear-mongering trends in the media have me thinking pessimistically.

I encourage anyone who could be affected (remember: how CA goes, goes a lot of the US - especially concerning the media and film industry) to consider writing to this state senator.

Positive reinforcement from this community could go a long way in setting up the fledgling non-military UAV industry for the long run.

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First flights with APM 2.0, and 3DR frame

Finally got the time to finish my quad and (attempt to) fly it!  It's my first quad. and I went a little different with the setup (see specs below) to try and see if I could push the propulsive efficiency up a bit and have more power on tap for heavier payloads down the line.   My static tests indicated that this is the case, but we'll see if it was worth the effort after some more flying :)



APM 2.0

3DR Frame

DT750kv motors

Turnigy 25amp Plush ESCs

12x3.8 SF APC props

Turnigy 4000mah 3s 30-40c

Hitec Aurora 9

TOGW = 1420 grams



See current tuning:


Video of best flight (i.e. didn't flip over or hit a tree)



1) It flew!

2) Somewhat stable..

3) No damage besides mostly superficial prop scuffing and small chip at one prop tip.  3DR frame seems pretty darn solid. I tried to take it easy


1) Even though i triple checked the wiring (albeit, I did not do the complete pre-flight check.. shame on me) I seem to have motors reversed.  It rolls the way I expect it to - Left stick = left,  right stick = right; but it pitches opposite  - Fwd stick = reverse flight,  Backwards stick =  forward flight.  Can this simply be fixed by reversing my throttle command on my transmitter?  My first though it that this will work with the stablized mode, but any other mode will not be corrected.  Or is this the standard way to fly a quad?

Note: just checked PBD wiring again and it's correct according to these  instructions.  Still not sure why it pitches opposite of what i am expecting.

2) As you can see in the videos the quad tends to drift (all of my flying was done in "stable mode") in various directions. I also see some oscillations.  Tuning advice?

3) On a few occasions after a hard landing, the quad would flip it's and max throttle the motors attempting to right itself for a few seconds (hence the prop scuffing).  Is this common?  Gentler landings did not seem to cause this problem.


One note: besides some R/C planes and one of those small, stabilized RC helis I have not flown anything like this.  I am sure that some of the issues are pilot error which will only improve with more time.


I am going to attempt to fly it again tomorrow, but will probably try to find a bigger area.. with grass.




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