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Rob_Lefebvre's Discussions

Notification: My Community Support Ending

Started this discussion. Last reply by Craig Elder yesterday. 81 Replies

Hello everyone, I feel the time has come to make an announcement, which I've been avoiding for a few weeks now, but which I can't put off anymore.As some people are aware (and some maybe not) for a…Continue

AC3.3 Vibration Logging Discussion Thread

Started this discussion. Last reply by Thorsten Jul 24, 2015. 21 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 crayfellow Aug 15, 2015. 13 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 Wrongway on Monday. 302 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


Rob_Lefebvre's Page

Latest Activity

Rob_Lefebvre commented on Thomas J Coyle III's blog post GoPro is in a massive tailspin
"Sony, as usual, just quietly kicking butt in the camera market."
20 hours ago

Craig Elder replied to Rob_Lefebvre's discussion Notification: My Community Support Ending
"There is a lot of UAV development in Brazil.  Intel have a dozen people in Brazil working on Ardupilot. "
Fernando Cunha replied to Rob_Lefebvre's discussion Notification: My Community Support Ending
"Rob, Wish you all good. I have learn a lot from reading your posts and I would like to thank you for that. As a aeromodeller and open-source enthusiast, I understand your point of view. This has come to me as a warning. I live in Brazil, have dual…"

Rob_Lefebvre replied to Forrest Frantz's discussion Mathematical Solution for Preventing a Fly-Away
"Totally agree with you.  There should be a law against autopilots that do not have the option for pure rate control and direct pilot input."

Rob_Lefebvre commented on Gary Mortimer's blog post T3 the Vertical Horizontal one
"Is this thing dead? Pulse Aero has demonstrated delivery of 10lbs of payload over a distance of 14 miles. (22.4km) using a 700 size helicopter.  Nothing really special about this helicopter either.  Just another converted hobby helicopter…"

Rob_Lefebvre replied to Rob_Lefebvre's discussion Notification: My Community Support Ending
"Many people would like to see the Pixhawk 1 design remain in production for some time.  Particularly commercial hardware vendors who have incorporated into their own products.  They don't want to have to go through reengineering for…"
Marcus Wright replied to Rob_Lefebvre's discussion Notification: My Community Support Ending
"Should we start a concerted effort to bring new controllers and their GC's to the forefront?  Seems it would be in our best interest to have some choices in a year or so.  Or do we think PX4 and APM will be with us for the next 5…"

Rob_Lefebvre commented on Craig Elder's blog post Autopilot needs survey
"I'd probably suggest your nephew check out the MSH Protos Max V2.  Should lift 3-5kg no problem."

Rob_Lefebvre commented on Craig Elder's blog post Autopilot needs survey
"Yep.  Also no rovers or boats.  Funny, those aren't supported by PX4 Flight Stack either, and also not available as options on this survey.  I wonder why. Survey also doesn't include SBUS output for Futaba servos, something…"

Rob_Lefebvre commented on Craig Elder's blog post Autopilot needs survey
"Oh, they didn't add that yet?  I had asked them to when this first came out over a week ago. Not surprising to me, because PX4 Flight Stack can't fly helicopters so... they don't exist.  Yet there are 3, count them 3,…"

Rob_Lefebvre replied to Aussie in AZ's discussion 3DR telemetry no longer supported by 3DR....options?
"Definitely can be the case.  I had a laptop where I got low range from the radios. I thought all my radios were bad.  But then I heard about this, and now using a different computer, much better."
Richard Kennedy replied to Rob_Lefebvre's discussion Notification: My Community Support Ending
"Open source is great but open source devs have mortgages and kids too!! I would gladly support a $10-20 a month donation to continue the development of the code. How many others?? But even if that would work... how would I know I'm not just…"
JB replied to Rob_Lefebvre's discussion Notification: My Community Support Ending
"+1 Gary Completely agree. Given the situation where some of the developers now have more "free time" what exactly can we put on the ground to support them going forwards as a business case? We can point fingers until they're blue, but…"
Marc Dornan replied to Rob_Lefebvre's discussion Notification: My Community Support Ending
"Bill Bonney's comments on Open Source are very well informed. However, Open Source is a very good model for a service oriented business. It is not such a good model for a commodity electronics manufacturing business of any scale. This is the…"
Richard Kennedy replied to Rob_Lefebvre's discussion Notification: My Community Support Ending
"okay I stand corrected I thought it was based on DP / over. "
Chris replied to Rob_Lefebvre's discussion Notification: My Community Support Ending
"Hi @AKRCGUY, Since this is a passion for me and I think it is to many others, I have to ask would you take the same view with any job?  Companies remunerate you for the work you have done.  Rob was lucky enough to get a role for a while,…"

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
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

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


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…


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.



Comment Wall (14 comments)

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

Chris is the Admin. He can help you.


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.


Nice Greets from Austria


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, 

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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