Developer
Rob_Lefebvre
  • Male
  • Ontario
  • Canada
Share Twitter

Rob_Lefebvre's Friends

  • Zwonimir
  • Erik Heijkants
  • Alex Drone
  • Sigge
  • Greg B
  • Kyle
  • Daniel Lachance
  • Jonathan Harris
  • Rob Thompson
  • Alexander Harmsen
  • Matt
  • Dr Adrian Evans
  • F. C. Bearsch "Tearig"
  • Caitlin Flowers
  • Paul Krajewski

Rob_Lefebvre's Groups

Rob_Lefebvre's Discussions

Helicopter Vibration Levels

Started this discussion. Last reply by UAS_Pilot on Friday. 33 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 Vlastimil Vrskovy Jul 2. 27 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. 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

Who wants to alpha test Flybarred Acro code?

Started this discussion. Last reply by Rob_Lefebvre May 27. 79 Replies

I am attempting to fix the flybar acro code, wanted to get it out with the upcoming 3.1.3 release, but I'm in a bit of a pickle.  It compiles in Arduino, but won't compile in Make for PX4.  I assume…Continue

 

Rob_Lefebvre's Page

Latest Activity


Developer
Rob_Lefebvre replied to Randy's discussion ArduCopter-3.2 beta testing
"Here's a test flight using 3.2 rc9 on a helicopter, testing high speed waypoint flight.  It did pretty well. ;) I'd like to open up 3.2 rc beta testing to other helicopter users at this point."
14 hours ago

Developer
Rob_Lefebvre commented on Euan Ramsay's blog post Payloader max has its first public demo
"Euan, I wonder if the issue is the heat created in the current sensor during the amp loads, are actually "cooking" the voltage regulator chip? Hugues, if the PM was simply a voltage sensor, and a regulator, we probably wouldn't have…"
15 hours ago

Developer
Rob_Lefebvre commented on Chris Anderson's blog post Pocketcopter project on Indiegogo
"Gary, I think that the success largely has to do with the fact that it's around $100, and it's a "drone".  The fact that it's a drone gives it big exposure, being reposted around the net, such as here.  Then since…"
15 hours ago

Developer
Rob_Lefebvre commented on Chris Anderson's blog post Pocketcopter project on Indiegogo
"Personally, I think that these sorts of projects should not be posted on here.  Or at least, should not be promoted.  "
17 hours ago

Developer
Rob_Lefebvre commented on Euan Ramsay's blog post Payloader max has its first public demo
"Euan, a long time ago, I picked up an AmpLoc current sensor.  It should be failure-proof, as it actually just slips over the wiring.  But I haven't had a chance to implement it yet. So this was a failure of the BEC, not the current…"
20 hours ago

Developer
Rob_Lefebvre commented on Euan Ramsay's blog post Payloader max has its first public demo
"Good work so far.  How long can the X8 lift that weight? I don't use any PM or amperage management on any large machine.  They are unreliable single point of failures.  The little benefit you get from current measurement just…"
yesterday

Developer
Rob_Lefebvre commented on Chris Anderson's blog post Pocketcopter project on Indiegogo
"I should do a kickstarter campaign for a 1kg gas-powered helicopter that can fly for 3 hours.  No engines exist for this yet, but I'm sure I can have one made for just $50,000.  No problem.Or maybe a larger version, where I will…"
Sunday

Developer
Rob_Lefebvre commented on Chris Anderson's blog post Pocketcopter project on Indiegogo
"Anybody figure out how they achieve pitch and roll control?  Only thing I could see at this point is little mini thruster jets at the bottom of the thing.  There certainly isn't anything in the rotor system to do it."
Sunday

Developer
Rob_Lefebvre commented on Chris Anderson's blog post 3DR announces partnership with Intel on Edison for Linux-based companion for Pixhawk
"Ok cool, I guess it went stable a few months ago.  Interesting.  I had not heard anything about this project. "
Saturday

Developer
Rob_Lefebvre commented on Chris Anderson's blog post Pocketcopter project on Indiegogo
"Yeah, gonna be debbie downer again.  I think this is bunk. Even if they could get it to fly, the camera quality would be crap."
Saturday

Developer
Rob_Lefebvre commented on John C.'s blog post Recent Solar Flare
"Looks like it hit G3, but is clear now? "
Saturday

Developer
Rob_Lefebvre commented on Roberto Navoni's blog post The IMU drone in Connected Rider: telemetry system for Motocross by Red Bull
"Ah, I see, I was wondering about the vibration.  I assumed maybe you mounted the system on the rider himself, then the vibration should be pretty low. So how do you measure G's with accelerometers?  Just using GPS data? Is this…"
Saturday

Developer
Rob_Lefebvre commented on BirdsEyeView Aerobotics's blog post FireFLY6 + Pixhawk + APM = Awesome Autonomy
"Julien, I definitely think unified code is good, and we'll get there eventually.  It's just a big job.  We're already a long way towards it, with many libraries being shared.  It would just take the commitment to merge…"
Saturday

Developer
Rob_Lefebvre commented on Chris Anderson's blog post 3DR announces partnership with Intel on Edison for Linux-based companion for Pixhawk
"Is that repo up to date?  It looks like it hasn't been updated in 2-3 months?"
Saturday

Developer
Rob_Lefebvre commented on Roberto Navoni's blog post The IMU drone in Connected Rider: telemetry system for Motocross by Red Bull
"Roberto, are you saying you used VRBrain and some version of our AHRS to get datalogs on the bike? If so, that's very cool.  A couple years ago I tried to get some of my friends to try using an APM for data logging on their race cars, but…"
Saturday
UAS_Pilot replied to Rob_Lefebvre's discussion Helicopter Vibration Levels
"Yes they are are 90 deg when when at zero and at hover pitch they are all the same angle. The servos are all align HV brushless servos.  Thanks for all your help."
Friday

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

Helicopter Presents Attractive Alternative to Multi-rotors and Fixed-wing UAVs

Posted on February 3, 2014 at 1:10pm 335 Comments

I've been working on a new helicopter platform the last few months. Based on an MSH Protos heli which I chose because it's an extremely light weight platform, weighing in at only ~1200g without battery. It has a full belt drive which I much…

Continue

Merry Christmas and a Happy New ACRO!

Posted on December 24, 2013 at 7:01pm 16 Comments

3.1 was released just in time for the holidays, but I felt the new Acro Mode we have developed has not been adequately demonstrated.  So I shot this video to show that Arducopter now has a competent Acro mode to go along with all the other functions.  This is kind of a big deal to me, as I am interested in learning acrobatic flying, but I really appreciate having…

Continue

Group Attempts Prison Contraband Deliver with Hexacopter

Posted on November 27, 2013 at 4:15am 7 Comments

I think this is actually the second attempt at this.  Wasn't there one last year?  Good to see that they actually caught the people involved and arrested them.  Hopefully it won't result in a knee-jerk reaction, but I doubt it.  The article is horribly written, but at least they didn't call it a "drone".…

Continue

Extreme Arducoptering

Posted on November 3, 2013 at 6:30am 6 Comments

 

On Friday we experienced very high winds, 60-90km/h, or Beaufort 7-8, this caused damage in the area, actually knocking over some trees, etc.  I decided to go out and test the wind performance of my F450 quadcopter, see if it's even possible to fly a quad in such conditions, and test the inertial Loiter performance.

 

Overall, it went fairly well.  Flight…

Continue

Comment Wall (10 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!

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

Join DIY Drones

 
 
 

Groups

Season Two of the Trust Time Trial (T3) Contest 
A list of all T3 contests is here. The current round, the Drone Delivery Challenge, is here

© 2014   Created by Chris Anderson.   Powered by

Badges  |  Report an Issue  |  Terms of Service