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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 TradHeli Release Discussion

Started this discussion. Last reply by uavfans Apr 14. 1 Reply

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

Helicopter Vibration Levels

Started this discussion. Last reply by william han lee Mar 27. 61 Replies

I just wanted to make a post to specifically address the issue of vibrations on helicopters, as I am seeing quite a few logs which exhibit excessive vibrations. This not only affects Loiter, but can…Continue

Warning about Helicopter Power Supply!

Started this discussion. Last reply by Stuart Brookes Jan 21. 30 Replies

I've posted about this before, but I feel I must reinforce this:You MUST use a completely independent power supply for your APM or Pixhawk than you use for the Servos.  DO NOT use one BEC to supply…Continue

Arducopter 3.2 Warning

Started this discussion. Last reply by Rob_Lefebvre Jun 5, 2014. 4 Replies

Just wanted to put out a warning to everybody, that you should not be testing any of the 3.2 Release Candidates for Tradheli until I say so.At this time, I have not flight tested 3.2rc1 or rc2. I…Continue

 

Rob_Lefebvre's Page

Latest Activity


Developer
Rob_Lefebvre commented on Ozan Özkök's blog post TwoDee EVO NG brushless dslr gimbal
"Which board is it, LV or HV? And how do the motors attach?"
17 hours ago

Developer
Rob_Lefebvre commented on Chris Anderson's blog post New APM clones look just like DJI Nazas ;-)
"That's a good point Gary.  Because many/most of these clones actually DO break the OS license. Gervais, I'm also a supporter of the Pixhack.  (I do wish they had used a decent name) Another hardware from China which adds value…"
18 hours ago

Developer
Rob_Lefebvre commented on Ozan Özkök's blog post TwoDee EVO NG brushless dslr gimbal
"So do I understand the one you linked to is without motors and controller?  Then there's this one which includes the motor and controller?http://copterframes.com/home/184-twodee-evo-ng-brushless-dslr-gimbal.html Looks like iPower motors?…"
19 hours ago

Developer
Rob_Lefebvre commented on Chris Anderson's blog post New APM clones look just like DJI Nazas ;-)
"Al, I really don't know what you're going on about.  I actually pay handsomely for my web browser, by way of providing the vendor reams of data about myself, which they in turn sell to 3rd party advertisers.  That is the deal…"
yesterday

Developer
Rob_Lefebvre replied to Pierre's discussion Multirotor v.s. helicopter in agricultural UAVs field for pesticide spraying in the group Agricultural UAVs
"I don't think there are any drawbacks to helicopters in this application.  The only reason anybody is even considering multirotors, is because the multirotor bandwagon is quite strong right now, and everybody is jumping on board.…"
yesterday

Developer
Rob_Lefebvre commented on Chris Anderson's blog post New APM clones look just like DJI Nazas ;-)
"Al, if you or anybody else think that something was intentionally added to the code to prevent cheap Chinese clones from working, I invite you to find it, and remove it.  That is in the spirit of open source, after all."
yesterday

Developer
Rob_Lefebvre commented on Chris Anderson's blog post New APM clones look just like DJI Nazas ;-)
"Al, you are the one trying to make this argument about something other than what it is.  You stated "A flight controller shouldn't cost 80% of the total cost of my build." That statement is unsupportable. There is no inherent…"
Friday

Developer
Rob_Lefebvre replied to Randy's discussion Copter-3.3 beta testing
"The problem is basically trying to walk the tightrope between EKF initialization being too strict and taking too long.  Or being too lax, and having bad initializations leading to potential crashes."
Friday

Developer
Rob_Lefebvre commented on Chris Anderson's blog post New APM clones look just like DJI Nazas ;-)
"I never attributed those words to you, so I'm not putting them in your mouth.  However, many others have used those words before when making the same argument.  (ie: justifying their reason for buying cheap clones).  "
Friday

Developer
Rob_Lefebvre commented on Ozan Özkök's blog post TwoDee EVO NG brushless dslr gimbal
"Would it be possible to assemble it (cut the tubes) so that it could fit anything from a Nex to a 5D?"
Friday

Developer
Rob_Lefebvre commented on Chris Anderson's blog post New APM clones look just like DJI Nazas ;-)
"Yeah, that reason, is that people do not value all the effort that has gone into designing the hardware, or writing the software that runs on it.  They just want hardware for little more than the cost of BOM.  Yes, I completely…"
Friday

Developer
Rob_Lefebvre commented on Ozan Özkök's blog post TwoDee EVO NG brushless dslr gimbal
"Wow, nice looking design.  I haven't seen these before. Could this be built suitable for a Nex5?"
Friday

Developer
Rob_Lefebvre commented on Chris Anderson's blog post New APM clones look just like DJI Nazas ;-)
"It always pains me to read when people under-value all of our work over the years like this.  Why shouldn't it cost 80% of the total cost of your build?  The system costs what it costs.  If the rest of your components are really…"
Thursday
Glenn Gregory commented on Rob_Lefebvre's blog post Sony Releases Stand-Alone Imager
"Great thanks for the info. I was unaware of the Mono solution."
Thursday
Marc LE BRET commented on Rob_Lefebvre's blog post Sony Releases Stand-Alone Imager
"Hi Glen, VP-Systems and Mono from SkySight are OK with QX1. Marc"
Thursday
Glenn Gregory commented on Rob_Lefebvre's blog post Sony Releases Stand-Alone Imager
"Oh I see QX1 is now listed on gentles website: http://www.gentles.ltd.uk/gentwire/multi.htm"
Thursday

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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