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Rob_Lefebvre
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Rob_Lefebvre's Discussions

Who wants to alpha test Flybarred Acro code?

Started this discussion. Last reply by Jim Johnston 20 minutes ago. 39 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

Really Good CHDK Script for SX260?

Started this discussion. Last reply by Gerard Toonstra Feb 12. 2 Replies

Does anybody have a really good intervalometer script for an SX260?  I've got your basic "Ultra Intervalometer" script running, but would like more functionality.I'd like something that will run as…Continue

Warning: Flybar Acro Mode

Started this discussion. Last reply by Gokay Akdoru Mar 14. 6 Replies

Warning of an important bug.Do not use "Flybar" mode with Acro mode.  When these are combined, the servos stop responding to cyclic input.  If you switch to acro mode in the air, you could crash.Use…Continue

Please Move Support Discussions To New Forum

Started this discussion. Last reply by Gary Mortimer Jan 8. 1 Reply

I just wanted to point it out that we would like to move any Arducopter support discussions to the new forum which has been set up here:…Continue

 

Rob_Lefebvre's Page

Latest Activity

Jim Johnston replied to Rob_Lefebvre's discussion Who wants to alpha test Flybarred Acro code?
"I am guessing there is no real way to do a compassmot on a traditional heli setup?  Taking the main blades off is pointless as there would be no load and thus no increase in current draw... Rob, what do you think of my current location for my…"
20 minutes ago
Jim Johnston replied to Rob_Lefebvre's discussion Who wants to alpha test Flybarred Acro code?
"In regards to the Naza H, the only down fall is that it does not have RTL in case of radio loss...the stupid thing will just sit there and wait for the battery to die and then just fall from the sky.  If all goes well with this setup, I may…"
31 minutes ago

Developer
Rob_Lefebvre commented on Dennis Okeefe's blog post Arcturus Jump - Piccolo autopilot using Latitude Engineering’s Hybrid-Quadrotor technology
"The crossover point would be interesting.  When going from Copter to airplane, you would have to pitch the nose way down to build speed.  But as the airspeed climbs, the wings will start pushing the airplane down.  Going from airplane…"
1 hour ago

Developer
Rob_Lefebvre commented on Dennis Okeefe's blog post Arcturus Jump - Piccolo autopilot using Latitude Engineering’s Hybrid-Quadrotor technology
"Yes, wind gusts can really upset these things in the VTOL phase.  The larger the wing, and closer set the motors are, the worse they would be.  I've seen a video of a model V-22, and there was a relatively minor gust of wind, came…"
4 hours ago

Developer
Rob_Lefebvre commented on Dennis Okeefe's blog post Arcturus Jump - Piccolo autopilot using Latitude Engineering’s Hybrid-Quadrotor technology
"I also don't really see this as a great layout Monroe.  Something like a P-38 with 3 tilt-rotors, the third being at the back of the central nacelle would be awesome!  Either that or a quad like this with tilt-rotors.  But I…"
5 hours ago

Developer
Rob_Lefebvre commented on Dennis Okeefe's blog post Arcturus Jump - Piccolo autopilot using Latitude Engineering’s Hybrid-Quadrotor technology
"Dennis, I don't see it actively being worked on.  Biggest problem would be flash memory space on the APM class of controllers which are already maxed out running airplane or multirotor already.  But, I would be that in roughly a year…"
6 hours ago
Jim Johnston replied to Rob_Lefebvre's discussion Who wants to alpha test Flybarred Acro code?
"Ohhh...if you send me a PixHawk, i'll gladly Alpha Test the Acro code on it as well LOL"
7 hours ago

Developer
Rob_Lefebvre replied to Rob_Lefebvre's discussion Who wants to alpha test Flybarred Acro code?
"I actually have a really good idea why that pitch jumping would occur.  Not surprising at all if I understand what you've done. I actually thought about putting a pitch curve right into Arducopter to solve this problem.  That's…"
8 hours ago

Developer
Rob_Lefebvre commented on Paul Krajewski's blog post APM2.5.2 & 2.6 MIC5219-3.3YM5 (GL33) Regulator Mod & Alternate Capacitor Mod
"Nice hacking.  And good work finding the solder bridge.  That's an important observation when trying to troubleshoot a board which arrives DOA. "
10 hours ago

Developer
Rob_Lefebvre commented on John Githens's blog post Multirotor used near Vancouver International Airport and Vancouver Harbour
"John, tl;dr.  What? I actually just got a call back from somebody in the enforcement branch of the NTSB.  It sounds like they are in fact close to nailing this guy down based on more conventional means (I assume following the "paper…"
10 hours ago

Developer
Rob_Lefebvre commented on John Githens's blog post Multirotor used near Vancouver International Airport and Vancouver Harbour
"Well, I contacted NTSB.  The number published is wrong.  That 877 number is the 24/7 nation wide emergency reporting number.  Nice journalism there.  The nice lady forwarded me to the proper person.  He took my information…"
yesterday
Jim Johnston replied to Rob_Lefebvre's discussion Who wants to alpha test Flybarred Acro code?
"Just double checked mine and sure enough, on those videos it was well above 4500 in the full prams list...like 32767...just changed it to 4500 on the full prams list which does give 45.0 in the extended tuning page...might even fly better…"
yesterday

Developer
Rob_Lefebvre commented on John Githens's blog post Multirotor used near Vancouver International Airport and Vancouver Harbour
"What do you guys think... My initial impression is that to get that kinda of stable footage on a zoom like that, he must be using a Sony camcorder with BOSS with a 3-axis gimbal.  It's the ONLY system I've ever seen where zoom is…"
yesterday

Developer
Rob_Lefebvre commented on John Githens's blog post Multirotor used near Vancouver International Airport and Vancouver Harbour
"Ric, what work has been done to connect his online accounts?  I haven't seen evidence that they have done much of anything yet.  Am I missing something?"
yesterday

Developer
Rob_Lefebvre commented on John Githens's blog post Multirotor used near Vancouver International Airport and Vancouver Harbour
"Anybody find contact info for the investigating officer from the RCMP?  Or should I just call TC?  I want to make sure they get the photo of the possible suspect."
yesterday

Developer
Rob_Lefebvre replied to Evan Feil's discussion Increase Throttle = No Tail Hold
"Actually, it didn't make a lot of sense to me.  Spektrum "programming" makes my head explode because it's not logical.  They try to make it easy by restricting what you can do, but I find it more confusing.  It…"
yesterday

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

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

Posted on February 3, 2014 at 1:10pm 305 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 (7 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

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