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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 TriCopter Improvements, need Input and Testers!

Started this discussion. Last reply by Tom Mahood May 15. 9 Replies

As part of my work to fix the RC Map problem for AC3.3, it makes sense to fix the Tricopter tail servo problems at the same time.  The timing on this work is really tight as we're down to the wire to…Continue

AC3.3 TradHeli Release Discussion

Started this discussion. Last reply by zhangpengsir 18 hours ago. 101 Replies

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

760uS Rudder Servo Support

Started May 1 0 Replies

Hey guys, I've seen the question asked several times over the years, about whether or not Arducopter could support high speed 760uS rudder servos.  I remember trying to help somebody with it a couple…Continue

AC3.3 TradHeli Release Discussion

Started this discussion. Last reply by Rob_Lefebvre May 15. 2 Replies

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

 

Rob_Lefebvre's Page

Latest Activity


Developer
Rob_Lefebvre commented on DroneBox Team's blog post DroneBoX Team presentation
"Euan, what's your flight time like that? "
16 hours ago
zhangpengsir replied to Rob_Lefebvre's discussion AC3.3 TradHeli Release Discussion
"Oh? Really? My test results are automatically after landing within a few seconds of time, have not been disarmed, accelerometer still adjusting posture, leading leftist fuselage and main rotor sweep to the ground."
18 hours ago

Developer
Rob_Lefebvre replied to Rob_Lefebvre's discussion AC3.3 TradHeli Release Discussion
"Did some quick testing of RC7, and so far so good. I did test Land mode, and it disarms within a couple seconds of touching down."
18 hours ago
Fred Goeddert replied to Rob_Lefebvre's discussion AC3.3 TradHeli Release Discussion
"Thanks for the reply with the info. alfred200@xtra.co.nz"
18 hours ago

Developer
Rob_Lefebvre replied to Randy's discussion Copter-3.3 beta testing
"+10 on the HW XRotor 40A ESC's.  Every HW ESC I have ever used has been good, and the Xrotors are fantastic. I use them on a large Octo with 15" props running 6S on 320kV motors. Never a sync problem and they only get barely warm,…"
19 hours ago

Developer
Rob_Lefebvre replied to Randy's discussion Copter-3.3 beta testing
19 hours ago
zhangpengsir replied to Rob_Lefebvre's discussion AC3.3 TradHeli Release Discussion
"@Fred Goeddert  Leave your e-mail address My videos are on youtube.com, you can view my column:https://www.youtube.com/channel/UCJZjaDp78PKNFgLfDsm1J5A"
23 hours ago
Fred Goeddert replied to Rob_Lefebvre's discussion AC3.3 TradHeli Release Discussion
"I am interested to see a copy of your file. Are you be able to attach it to an e-mail if I give you my address? I have seen your videos with interest. Having a 500 with APM2.5 and a 700 with Pixhawk - 3.2.1  myself. Just in a process of…"
yesterday

Developer
Rob_Lefebvre replied to Randy's discussion Copter-3.3 beta testing
"It generally seems to fly fine, but it's not flown much yet. When I tried Alt Hold, it plummets at over 6 m/s. Luckily I had enough altitude the first time. I tried several times and have to go back to stab immediately to avoid cratering.…"
yesterday

Developer
Rob_Lefebvre replied to Randy's discussion Copter-3.3 beta testing
"So this is the question.  You think that a gas powered helicopter, showing this much vibration (using the old method) will have no problem at all flying. In fact, maybe it has the lowest mid-high frequency vibration of anything we've seen…"
yesterday

Developer
Rob_Lefebvre replied to Randy's discussion Copter-3.3 beta testing
"So I need raw IMU logging?  I thought that we had turned on high speed logging by default for RC7, and this is was basically the same thing?"
yesterday

Developer
Rob_Lefebvre replied to Randy's discussion Copter-3.3 beta testing
"Yes, that is more like the holes I was expecting to see.  I don't have that, strangely.  But maybe it's just manifesting differently."
yesterday

Developer
Rob_Lefebvre replied to Randy's discussion Copter-3.3 beta testing
"Yes, definitely need too look at more data.  This is largely why I posted this, to get the discussion going.  Maybe needs it's own thread or something."
yesterday

Developer
Rob_Lefebvre replied to Randy's discussion Copter-3.3 beta testing
"Yes, exactly, the vibes are quite high by the old measure.  But low by the new measure.  That's why I'm questioning if the new vibe logging is measuring the right thing."
yesterday

Developer
Rob_Lefebvre replied to Randy's discussion Copter-3.3 beta testing
"Doug, was your missing data on the same sort of scale?  I understood the missing data was more like, 1 second every few seconds.  This looks more like, a few milliseconds every few milliseconds. But yes, I should try new cards."
yesterday

Developer
Rob_Lefebvre replied to Randy's discussion Copter-3.3 beta testing
"Both tests were done on RC6."
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

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…

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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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