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Rob_Lefebvre
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  • Ontario
  • Canada
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Rob_Lefebvre's Groups

Rob_Lefebvre's Discussions

AC3.3 Vibration Logging Discussion Thread

Started this discussion. Last reply by zhangpengsir yesterday. 15 Replies

Start this thread to have a place for focused discussion of the new vibration logging function of AC3.3.  I'll start by copy-pasting my initial discussion from the AC3.3 beta testing thread.Continue

AC3.3 TriCopter Improvements, need Input and Testers!

Started this discussion. Last reply by SwissFreek on Sunday. 10 Replies

As part of my work to fix the RC Map problem for AC3.3, it makes sense to fix the Tricopter tail servo problems at the same time.  The timing on this work is really tight as we're down to the wire to…Continue

AC3.3 TradHeli Release Discussion

Started this discussion. Last reply by GEORGE KEFALAS 3 minutes ago. 104 Replies

WARNING to TradHeli users:Do not attempt to fly AC3.3 until you hear otherwise from me.  I have not even bench tested it yet, let alone test flown it.  There are quite a lot of changes that have gone…Continue

760uS Rudder Servo Support

Started May 1 0 Replies

Hey guys, I've seen the question asked several times over the years, about whether or not Arducopter could support high speed 760uS rudder servos.  I remember trying to help somebody with it a couple…Continue

 

Rob_Lefebvre's Page

Latest Activity

GEORGE KEFALAS replied to Rob_Lefebvre's discussion AC3.3 TradHeli Release Discussion
"I have a pixhawk and i follow the videos. Thank you."
3 minutes ago

Developer
Rob_Lefebvre replied to Chris Maier's discussion Loiter / Auto - Yaw spinning on takeoff
"I'm planning on fixing this for 3.3. Yes, you can sort of fix it if you push a bit of left rudder until you see the tail rotor blades go straight.  Then it should take off relatively straight."
3 hours ago

Developer
Rob_Lefebvre replied to Rob_Lefebvre's discussion AC3.3 TradHeli Release Discussion
"I haven't used an APM in 2 years... How are you attempting to calibrate the ESC? "
3 hours ago

Developer
Rob_Lefebvre commented on Brian Martin's blog post GoPro Session $399
"Yep.  It always looked so dorky putting it on a helmet.  :)  I see guys using them at the motorcycle races, but I don't know how they prevent knocking them off in the woods."
3 hours ago
GEORGE KEFALAS replied to Rob_Lefebvre's discussion AC3.3 TradHeli Release Discussion
"Hello again, i want to ask if the wire connection is the same as apm ,because i can't calibrate the esc and also i can't arm the fc. Thank you."
4 hours ago

Developer
Rob_Lefebvre commented on Brian Martin's blog post GoPro Session $399
"Nope, nothing, no analog, no HDMI, no Wifi, nothing. While the form factor looks pretty good for us, it appears to be completely useless.  No way to see what you're shooting.  It's amazing it's the same price as a regular…"
16 hours ago

Developer
Rob_Lefebvre commented on Brian Martin's blog post GoPro Session $399
"Do these have any video output? "
17 hours ago
zhangpengsir replied to Rob_Lefebvre's discussion AC3.3 Vibration Logging Discussion Thread
"Thank you very much! Now I were tested between 10、15、20Hz, when 10Hz, vibration curve looks a lot smaller, especially AccY, and at 15Hz, I feel like more stable, I do not know whether other parameters related to changes, because I also adjusted the…"
yesterday

Developer
Rob_Lefebvre replied to Rob_Lefebvre's discussion AC3.3 Vibration Logging Discussion Thread
"Yes, the filtering definitely helps reduce the vibration noise. However, it can also reduce the stability of the helicopter.  For a while I was using 10Hz, but then found that the machine was much less stable so I've gone to 20Hz."
yesterday

Developer
Rob_Lefebvre commented on Chris Anderson's blog post Latest on Pixhawk-powered ducted fan drone
"Nice work!  Love to see different types of airframes being explored! Definitely would like to see this with the some stub wings for fast forward flight."
yesterday

Developer
Rob_Lefebvre replied to Randy's discussion Copter-3.3 beta testing
"The flips and rolls are all done in Acro mode.  I've never used Flip on a helicopter, and don't recommend it. I'll try to attach my param file on the helicopter thread."
yesterday
SwissFreek replied to Rob_Lefebvre's discussion AC3.3 TriCopter Improvements, need Input and Testers!
"Is there any work still going on for tricopters in AC3.3? 3.3-rc7 seems to have made mine unflyable. Wondering if something was changed recently that I wasn't aware of. Also posted about this in the main AC3.3 thread but that thing is a beast…"
Sunday

Developer
Rob_Lefebvre replied to Rob_Lefebvre's discussion AC3.3 Vibration Logging Discussion Thread
"Yeah, it is impressive."
Saturday

Developer
Rob_Lefebvre replied to Randy's discussion Copter-3.3 beta testing
"Video of my small electric helicopter flying AC3.3 RC7: "
Saturday

T3
Thorsten replied to Rob_Lefebvre's discussion AC3.3 Vibration Logging Discussion Thread
"Wow! :-) Seems EKF is doing a perfect job."
Saturday

Developer
Rob_Lefebvre replied to Rob_Lefebvre's discussion AC3.3 Vibration Logging Discussion Thread
"Here's a flight where you can see the gas tanks shaking.  The video was originally shot at 60p, and it was hard to see.  When I downsampled to 30p for Youtube, it became super obvious how much they were shaking. "
Saturday

Profile Information

About Me:
Mechanical Engineer
Arducopter TradHeli Lead Developer
Please tell us a bit about your UAV interest
Aerial Photography
Light Industrial Applications
Traditional Helicopters
Hometown:
Brighton Ontario Canada

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Rob_Lefebvre's Blog

New Drone Service Tests Commercial Usage Laws in Canada

Posted on March 20, 2015 at 8:58am 19 Comments

http://bigwhite.cmail2.com/t/ViewEmail/r/3059DF9ADD1D1A942540EF23F30FEDED/D84B544420A969371726EA5DA1051479

This just popped up on a Canadian Commercial Operator Facebook group and we're discussing the implications and legal…

Continue

CBC Documentary: The Age of the Drone

Posted on February 18, 2015 at 8:13pm 3 Comments

On February 19th at 9PM, the Canadian Broadcast Corporation will air a new documentary on drones, following up the one they did last year called Remote Controlled War.  Last year's was more focused on the military aspects, this new one is more commercial/recreational.

I'm not sure what the availability will be for those outside Canada.  Hopefully our…

Continue

Iris/Pixhawk Cold Weather Testing

Posted on February 18, 2015 at 5:00pm 27 Comments

Last weekend I drove up north a bit for some real cold weather testing of my Iris+ equiped with Pixhawk.  I had to get up early in the morning to catch -30C temperatures which is about as cold as I'm interested in testing.  At -30C, my gloved fingers froze after a few minutes.  Not quite frostbite, but deep into pain territory.

Spurred…

Continue

Canada to Regulate Recreational Flights Like Commercial

Posted on February 11, 2015 at 1:30pm 7 Comments

I'm not sure if anybody who is not a member of Unmanned Systems Canada can see this report or not:

https://www.unmannedsystems.ca/media.php?mid=4633

So I will summarize:  At a meeting of the International Civil Aviation Organization in Montreal last week,…

Continue

Comment Wall (13 comments)

At 5:59pm on November 30, 2011,
Developer
Jason Short
said…

Chris is the Admin. He can help you.

Jason

At 8:22pm on May 16, 2012, Carl La France said…

Robert thanks for your input the 1/8 aluminum on  on the fuselage will be a milled out channel running  half way down the side of the plane    to attach the wing the horizontal stabilizer and the vertical fin to a Exoskeleton about 1 1/2 pounds the rest of the plane is foam and fiber glass there was no distortion welding we had it clamped down  pretty good Thanks again Carl

At 4:26am on July 26, 2012, OG said…

Thanks for you assistance with my ecommerce sight yesterday . I appreciate it so much I give you my cost your first porches.

At 6:17pm on November 27, 2012, Dwgsparky said…

Hi Robert, sorry I missed your request. still getting used. to this system.

Sorry, not waterslides,,,, Kiddie trains from Granby.

At 7:53pm on January 24, 2013, Joshua Johnson said…

My bad I was just trying to give new members someone they can ask questions to because the site is super confusing at first for a while when your new. Ill stop doing it!

At 11:47pm on April 23, 2013, Manuel Zangenfeind said…

Dear Mr. Lefebvre,

I saw some videos from your heli in Loiter Mode and thought wow this heli is standing rigid in the air.

I'm using a TREX 700E and want to fly this heli with apm 2.5 version 2.91 autonomously.

Currently I want to adjust the PID parameter. The stabilize and the Altitude Hold Mode is working perfect, but I have some problems with the Loiter values.

So would it be possible to send me your PID values of the loiter mode? I think they have to be very similar.

Thanks.

Nice Greets from Austria

Manuel

At 2:56pm on July 8, 2013, Jonathan Weisburst said…

Hi Mr. Lefebvre, 

Thanks for getting back to me.  Do you have any suggestions in terms of renting or hiring aerial videography crews or drones?  

All the Best, 
Jon

At 11:06pm on June 3, 2014, Matt said…

Hi Rob,

Interested in making a Tandem out of 2x 800 sized helicopter. Just interested to discuss your thoughts.

At 7:34pm on July 12, 2014, Eric said…

Hi Rob, I saw your DroneCon talk on youtube (which was great, thanks!), and it looks like you got cut off towards the end there. By any chance is the full slide deck available somewhere? Or was there much more left? Thanks!

At 3:02am on August 1, 2014, Artem said…
Hi Rob, i know you had a lot to do with AC yaw control, could you confirm if motor values are used in the formula for the yaw servo control? In other words if running a motor in a wrong direction would affect the yaw control. If so is this something that appeared in the code since 3.1.3 or was it there before? Thank you!

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