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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 Thorsten Jul 24. 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 Patrick Krekelberg Aug 15. 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 Fred Goeddert on Sunday. 142 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


Developer
Rob_Lefebvre replied to Randy's discussion figuring out the Antenna Tracker
"Hi Guys, I'm trying to get a tracker working myself, sort of been fiddling with it for a while.  I initially tried running it on 0.7.2 but I had the seemingly common problem that the pitch servo was not moving at all.  Yesterday I…"
yesterday

Developer
Rob_Lefebvre commented on Thomas J Coyle III's blog post FAA Approves a Fleet of 324 Commerical Drones
"Why is Attachment 1 basically a list of every UAV type ever made?"
Wednesday

Developer
Rob_Lefebvre commented on Andrew Tridgell's blog post An awesome day at CMAC
"I'm a bigger fan of the Eurocopter X3 design.  I'm currently involved in a coaxial project, and honestly the mechanics are a nightmare.  At this scale, it's hard to shrink down the linkage, so the head become very tall, and…"
Tuesday

Developer
Rob_Lefebvre commented on Andrew Tridgell's blog post An awesome day at CMAC
"@Stephen: The weight of an imaging computer is trivial to a copter of this size.  It would barely even notice 2kg of payload. And flying in a 25kt gusting wind, again, would be no problem at all.  In fact, in the video above, I believe it…"
Tuesday

Developer
Rob_Lefebvre commented on Andrew Tridgell's blog post An awesome day at CMAC
"JB, Couple data points: I have a <2kg electric heli that flies at 35 m/s for 5 minutes. So no, it won't do the competition, but just as an example of what is possible.  I have another running lower rotor speed that can do 25 m/s for 20…"
Tuesday

Developer
Rob_Lefebvre commented on Antidio Viguria's blog post Landing of a helicopter UAV on a mobile platform without GPS
"Interesting.  I bet that sling angle sensor could also be used for controlling flight with a sling load. So the intention is that the helicopter could fly around untethered, then come in to land, drop a tether line, which is hooked up, and…"
Tuesday

Developer
Rob_Lefebvre commented on Andrew Tridgell's blog post An awesome day at CMAC
"JB, you made a comment about a 60km round trip in one hour being difficult for a gas powered helicopter.  What is that based on?  I believe it's actually trivial.  Mine burns about 0.5L of fuel in 25 minutes, and I have 2.2L on…"
Tuesday

Developer
Rob_Lefebvre commented on Andrew Tridgell's blog post An awesome day at CMAC
"On tuning the attitude rate gains on a flybarless heli, I've never had the EKF blow up while doing this.  Ch6 Tuning function makes it easily to slowly and carefully ramp up the gains, and you can see when things are starting to oscillate…"
Tuesday

Developer
Rob_Lefebvre commented on Antidio Viguria's blog post Landing of a helicopter UAV on a mobile platform without GPS
"Nice to see more helicopters! I see the winch under platform, is the helicopter being winched down similarly to how they land helicopters on Frigates and Destroyers today?  The helicopter applies full up collective, and the boat winches it…"
Tuesday

Developer
Rob_Lefebvre commented on Andrew Tridgell's blog post An awesome day at CMAC
"Glad to hear you're having some good luck with the helicopter Tridge. "
Monday

Developer
Rob_Lefebvre commented on Andrew Tridgell's blog post An awesome day at CMAC
"I'll let Tridge answer why he's using flybars, but it should be clear that APM:Copter flies flybarless helis quite well.  That is the primary development platform, and what the majority of users are flying.  All my helis are…"
Monday
Fred Goeddert replied to Rob_Lefebvre's discussion AC3.3 TradHeli Release Discussion
"Jason, yes that is how it is working now. As soon you startup the motor you have full control I can a sure you. I fly a 500 size Heli with this version. Flown 3 battery packs with 3.3 RC10. Have done only following modes: Stabilize, Alt Hold, Loiter…"
Sunday
Jason Franciosa replied to Rob_Lefebvre's discussion AC3.3 TradHeli Release Discussion
"That is true, but, there are a ton of changes for 3.3 so I would prefer to just start there. I am quite familiar with Ardupilot and very familar with setting up heli's in general, just new to the Arducopter Traditional Heli and wondering if…"
Sunday
Jolyon Saunders replied to Rob_Lefebvre's discussion AC3.3 TradHeli Release Discussion
"To be honest you should get your heli running g on AC3.2.1 before attempting to run a beta version because you can virtually eliminate the possibility of it being a bug."
Sunday
Jolyon Saunders replied to Rob_Lefebvre's discussion AC3.3 TradHeli Release Discussion
"The tail won't become active until you have the main motor signal high. But the swash should always be active AFAIK"
Sunday
Jason Franciosa replied to Rob_Lefebvre's discussion AC3.3 TradHeli Release Discussion
"Just tested RC10 for an intitial setup, however, in stabilize mode we hae full control of the swash, but, as soon as we arm the motor we don't have any control over the swash or tail other than collective. Is this the correct behavior? It seems…"
Sunday

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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