Rob_Lefebvre
  • Male
  • Ontario
  • Canada
Share

Rob_Lefebvre's Friends

  • Sriram
  • Halil
  • Jose Barreiros
  • Justin Brisebois
  • Luis Moreno Julimez
  • Jesse Moore
  • Reza Michael Nemovi
  • dongfeng
  • Mike Hoffman
  • Olivier
  • Javier Vergara
  • Pascal Fust
  • DRONAFON
  • m ridwan hakim
  • Vincent

Rob_Lefebvre's Groups

Rob_Lefebvre's Discussions

For Sale: Like new Canon SX260

Started Apr 19, 2016 0 Replies

Bought an SX260 a while ago for mapping, but never ended up using it beyond a couple quick test flights.  Like new condition. Complete with box, etc.  These are sought after because of CHDK and NDVI…Continue

AC3.4 Discussion

Started this discussion. Last reply by David Boulanger Apr 28, 2016. 6 Replies

Hello,I just wanted to start a post discussing AC3.4.  People should be aware that I'm not reviewing the code in Master or doing test flights at this time.  Recently, a large set of changes went into…Continue

Notification: My Community Support Ending

Started this discussion. Last reply by Mark Lewus Feb 14, 2016. 89 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 Forrest Frantz May 20, 2016. 58 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

 

Rob_Lefebvre's Page

Latest Activity

Rob_Lefebvre commented on AJ Burke's photo
Thumbnail

3DR Solo

"You can't just go and use SiteScan with that.  You have to pay 3DR over $10,000 for that package."
Sunday
Rob_Lefebvre replied to Ethan's discussion Should I use PX4 flight control stack or the APM 3.3 for Pixhawk?
"No, that article was trash when it was written, and hasn't gotten better with age. Mostly made-up facts, that I wonder if the author also works for Bietbart. Almost every statement they make can be countered with cold, hard facts. The claim…"
Sunday
Rob_Lefebvre commented on Chris Anderson's blog post Lily closes down
"I actually stopped by their offices in ~September 2015because I was in the area. I was hoping to get some indication.  But I couldn't see anything.  I couldn't even access the lobby of the building they claim to work in.  No…"
Jan 17
Rob_Lefebvre commented on Chris Anderson's blog post Lily closes down
"Jimmy, I do not think they are selling.  They say that they have given units to Beta testers, but there is zero evidence of this.  Meanwhile, they keep posting messages that seem to be nothing but delaying tactics.  Here's the…"
Jan 17
Rob_Lefebvre commented on Bart Theys's blog post Which one has the highest range: VTOL, helicopter, multi-rotor (or flying squirrel?)
"Ah, yes, I agree Bart.  At least in the case of multirotors.  I've not tested it, or really even thought about it, but I think you're probably right.  A big part of the reason is that the things you do to make a multirotor…"
Jan 15
Rob_Lefebvre commented on Chris Anderson's blog post NASA simulates Phantom airflow
"Oh, I never bothered with that.  A small copter can flip over fast enough it didn't matter. But, a little state machine could be done to make it climb first."
Jan 14
Rob_Lefebvre commented on Drone thermal camera's blog post Second generation of thermal imaging camera WIRIS
"Ok, thanks. So what is the FPS we can achieve with the thermal camera?  I tried to find it in the specs but couldn't."
Jan 14
Rob_Lefebvre commented on Bart Theys's blog post Which one has the highest range: VTOL, helicopter, multi-rotor (or flying squirrel?)
"Bart, there is a non-obvious, but quite real correlation between multirotor flight efficiency with reduced stability. The recipe for making a long-duration multirotor, is to use very large propellers relative to the mass.  This is very…"
Jan 14
Rob_Lefebvre commented on Chris Anderson's blog post Lily closes down
"Yeah John, this is not at all surprising unfortunately.  It was pretty obvious from the video that it wasn't real. It's interesting to observe how most of the systems which adopt PX4 follow a pretty similar trajectory.  IME it is…"
Jan 14
Rob_Lefebvre commented on Drone thermal camera's blog post Second generation of thermal imaging camera WIRIS
"Nice looking system.  Which gimbal is that in the photo above?  I can't find info on that on your website."
Jan 14
Rob_Lefebvre commented on Chris Anderson's blog post NASA simulates Phantom airflow
"No, inverted mode never made it to Master.  But it's trivial to do so I could test it again.  All you need is a mode where the Roll target is moved 180 degrees, and the code does the rest.  It's like a 2 line change."
Jan 14
Rob_Lefebvre commented on Chris Anderson's blog post NASA simulates Phantom airflow
"Gary, the incoming air isn't zero velocity however.  The propeller is forming a column of inflowing air.  It's essentially feeding itself. Yeah, the relative size of the fuselage compared to the disk area, is small.  Also,…"
Jan 13
Rob_Lefebvre commented on Chris Anderson's blog post NASA simulates Phantom airflow
"It's interesting that the complicated model predicts the streamtube contraction, and the less-than-double-thrust-increase from doubling the rotors, as the very simple Momentum Theory model predicts."
Jan 13
Rob_Lefebvre commented on Chris Anderson's blog post NASA simulates Phantom airflow
"And an octocopter is even worse.  Was really surprised when I did some speed testing last week with my Tarot X8.  It hovers on 35A unloaded.  And was 45A at 10 m/s.  But pushing it full forward, it was achieving only 16 m/s on a…"
Jan 13
Rob_Lefebvre commented on Adrián Nagy Hinst's blog post 3D printed tray for Graupner MZ-24
"Nice job.  I actually just ordered a Futaba FX-22 and I need to get a tray for it.  Have been debating between buying one ready-made vs. making one."
Jan 11
Rob_Lefebvre commented on Chris Anderson's blog post German university team wins first place at IMAV with Pixhawk-powered copters
"So, if I remember right, Lorenz Meier used to compete in this, that's how PX4-stack got started I believe.  Is anybody from the PX4 team still competing? How did they do this year?"
Jan 11

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

Rob_Lefebvre's Photos

Loading…
  • Add Photos
  • View All

Rob_Lefebvre's Blog

Procyon 800E Enters Limited Production

Posted on December 16, 2016 at 12:00pm 19 Comments

NOVAerial Robotics is pleased to announce that the Procyon 800E drone helicopter has finished it’s prototype and testing phases and is beginning limited production and delivery to commercial companies worldwide.

The first customer to place…

Continue

NASA Chooses Helicopter For MARS Drone

Posted on September 2, 2016 at 10:53am 9 Comments

(Originally posted on NOVAerial Robotics Blog)



NASA is now planning on using a UAV in addition to the Rover in order to explore Mars.  The reasons are very simple, and parallel the desire to use UAV’s on earth.  Having a…

Continue

Procyon 800E Phase 2 Beta Testing Begins

Posted on July 21, 2016 at 5:59pm 42 Comments

( Blog Reposted From Here )

NOVAerial Robotics is pleased to announce that Phase-2 beta testing of the revolutionary…

Continue

Comment Wall (17 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,
Moderator
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!

You need to be a member of DIY Drones to add comments!

Join DIY Drones

 
 
 

© 2017   Created by Chris Anderson.   Powered by

Badges  |  Report an Issue  |  Terms of Service