Rob_Lefebvre
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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 Flora Lai's blog post TATTU PLUS 2.0 SMART BATTERY
"Yes, I hope to see wide availability of these batteries in future.  And more sizes!I also designed a UAV around the Tattu Plus 22000 battery, and then had difficulty getting them.  I would love to see a battery system available which gets…"
Monday
Rob_Lefebvre commented on Kristaps Brass's blog post Precision of Vertical Maneuvers – It's All About Safety
"Sort of sounds like intentional sand-bagging."
Sep 24
Rob_Lefebvre commented on Kristaps Brass's blog post Precision of Vertical Maneuvers – It's All About Safety
"Hi Alexey, You can get much better performance from Arducopter with a very simple change.  Just set a 1 second pause/hold time at every waypoint.  Now the copter will hit each waypoint exactly, hold for one second, then move on.What you…"
Sep 22
Rob_Lefebvre commented on Jordi Muñoz's blog post mRo mid 2017 updates
"Yes, choice is always good.  I just caution about broad comments that isolation is not required. I have an AUAV X2 that is nearly hard mounted on a helicopter, and it's working fine.  And I have a gas powered heli, which needs the…"
Aug 3
Rob_Lefebvre commented on Jordi Muñoz's blog post mRo mid 2017 updates
"Ok, this is what I suspected.  I would say that stating that "vibration damping foam is not required" is a gross over-simplification of the situation, and will not do you or your customers well. It can work in some cases.  And…"
Aug 3
Rob_Lefebvre commented on Jordi Muñoz's blog post mRo mid 2017 updates
"Really looking forward to the SoloLink.  CUAV is basically already doing this with the HackLink, but I would prefer to buy from a more reputable source.  I strongly advise you to come up with a name other than SoloLink though.But I'm…"
Aug 3
Rob_Lefebvre replied to Mr N.'s discussion Hybrid 4 stroke multirotor
"Yes, too bad.  It's fairly trivial to get 100 hp/L out of a modern 4 stroke, which would mean this thing should be making 3.5hp.  Up to 200 hp/L is possible for a high performance engine, which would return 7hp here.1.3hp is just…"
Jul 28
Rob_Lefebvre replied to Mr N.'s discussion Hybrid 4 stroke multirotor
"I'm also interested in the Honda 4-strokes, but also believed they don't make a lot of power.  The factory power rating I think is only about 1hp.  But I'm not sure what it can do with some tuning.  These engines are…"
Jul 28
Rob_Lefebvre commented on Jimmy Oliver's blog post Phantom 3 No-Servo Cargo Drop System
"Graham, it's quite surprising to see an admin brush this off as "Keyboard Police".  Perhaps you are not aware, but there is a very serious problem.  This is actually happening.  And yes, they are using our products and…"
Jul 1
Rob_Lefebvre commented on Jimmy Oliver's blog post Phantom 3 No-Servo Cargo Drop System
"It's not just the wording.  It's the whole thing. I'm sure you'll get a lot of orders from the middle east. "
Jun 30
Rob_Lefebvre commented on Jimmy Oliver's blog post Phantom 3 No-Servo Cargo Drop System
"This is very tone deaf."
Jun 29
Rob_Lefebvre commented on Kristaps Brass's blog post Comparing Precision of Autopilots for Survey Missions - Pixhawk with ArduCopter firmware
"Pretty good result as expected, and I notice it wasn't a wind-free day either.Would be interesting to see the results if you set a 1 second delay on each waypoint, it could cause the craft to exactly hit each corner and stop, making truly…"
Jun 22
Rob_Lefebvre commented on Chris Anderson's blog post How do modern open source autopilots compare to aerospace-grade IMUs?
"John, good point.  I know we've seen datalogs where the sensors are not performing within spec."
Jun 21
Rob_Lefebvre commented on Chris Anderson's blog post How do modern open source autopilots compare to aerospace-grade IMUs?
"When (or rather if) Honeywell discovered a problem with their IMU, they would issue a recall.Compare that to known examples from other manufacturers who have discovered major issues with flight controllers, they delete user comments from their…"
Jun 20
Rob_Lefebvre commented on Chris Anderson's blog post How do modern open source autopilots compare to aerospace-grade IMUs?
"Any comparison between these systems, must consider not just the raw performance specs of the chips, but also the MTBF of them, amongst other details.  And not only the details of the chips themselves, but the quality of the systems engineering…"
Jun 20
Rob_Lefebvre commented on Bart Theys's blog post Meet CargoCopter: our latest generation of high-speed, long-range drones
"Ok, I wondered, as I know how difficult it is to lift 5kg.  Still, 2kg at that speed and range is a nice spec for a lot of applications.I actually think that racing quads should evolve to look a lot like this...  It's just the natural…"
May 30

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

Procyon 800E Enters Limited Production

Posted on December 16, 2016 at 12:00pm 18 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…

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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…

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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 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!
At 4:54pm on January 9, 2015, Rowan Watkins said…

Hi Rob, thanks for connecting with me.

I am currently working on a Trex 700E project with PixHawk as the controller. I have it flying well in Stabilise with the conventional shaft drive tail, but am keen to incorporate a DDVP Tail Rotor as you have done, and wondering if you have any pictures or info you could share that will point me in the right direction in setting it up.

I apologise in advance if there is a post on DIY Drones about setting this up, but I am aware that there are only a small number of people using this method.

Regards

Rowan Watkins

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