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Rob_Lefebvre
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Rob_Lefebvre's Discussions

For Sale: Like new Canon SX260

Started Apr 19 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 on Thursday. 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. 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 Thorsten Jul 24, 2015. 21 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


Developer
Rob_Lefebvre commented on Gary Mortimer's blog post Its Friday, I'm just going to leave this here
"Again, if people want a flying chair, they already exist. "
yesterday
Micha commented on Rob_Lefebvre's blog post Procyon Helicopter Demonstrates 1 Hour Flight with 1KG Payload
"Looks great, is this a align flybarless head? Really nice servos. Very pricy but nice :)"
yesterday

Developer
Rob_Lefebvre commented on Gary Mortimer's blog post T3 the Vertical Horizontal one
"Ok, maybe not my final entry, conditions were far less than perfect, with 20-30 km/h cross wind.  Procyon just flew 30km with 1kg payload.  I think it will do 50km with more work and calm winds. If you are in urgent need of a steel rod, I…"
yesterday

Developer
Rob_Lefebvre commented on Gary Mortimer's blog post Its Friday, I'm just going to leave this here
"Ben,  there really is no control at all. While Roll axis may appear to be roughly controlled, it's not.  I think what we saw in the video are the few times where he managed to maintain balance for a few seconds at a time.  It…"
yesterday

Developer
Rob_Lefebvre commented on Gary Mortimer's blog post Its Friday, I'm just going to leave this here
"At least he chose a sensible energy source. "
Friday
David Boulanger replied to Rob_Lefebvre's discussion AC3.4 Discussion
"I have followed the Link you attached.  I guess the definition of Pixhawk failing is open to debate.  I have a 600E with a Pixhawk.  You should have zero vibration issues unless you have some type of mechanical failure in…"
Thursday
Nicolas CLOES replied to Rob_Lefebvre's discussion AC3.4 Discussion
"http://diydrones.com/profiles/blogs/canberra-uav-demonstrates-helicopter-flight-with-downstream-fbl Hi, Please take a look at this link. I know it's not common to do so but as you saw there, Tridge demonstrated that this is totally doable. In…"
Thursday
David Boulanger replied to Rob_Lefebvre's discussion AC3.4 Discussion
"I Don't think it is recommended to have a Flybarless controller downstream of the Pixhawk.  I Don't know why you are worried about the Pixhawk failing.  If it did how would the Microbeast get it input signals?  Sounds like a…"
Thursday
Nicolas CLOES replied to Rob_Lefebvre's discussion AC3.4 Discussion
"Hi, I'm beginning the integration of a Pixhawk running AC3.4 on a TREX 600E with a Microbeast as external rate controller (for the added safety in case of Pixhawk loss, and because it already flew more than 150 flights without any…"
Thursday
zhangpengsir replied to Rob_Lefebvre's discussion AC3.4 Discussion
"WOW,Hopefully AC3.4 energy and multi-rotor firmware update together"
Thursday

Developer
Rob_Lefebvre commented on Gary Mortimer's blog post T3 the Vertical Horizontal one
"Earlier on it was stated couldn't be gas, had to be electric. Otherwise I'll enter my gas heli too."
Wednesday

Developer
Rob_Lefebvre commented on Colin Snow's blog post Insights from New Market Research on Drones Sales
"I don't think FPV Racers like the Eachine 250 are "drones" and should not be included in this.  Unless they have at least GPS position hold and RTL, it's just a quadcopter. Craig, did you really just suggest that people who…"
Tuesday

Developer
Rob_Lefebvre commented on Colin Snow's blog post Insights from New Market Research on Drones Sales
"Interesting results, and even includes statistical certainty. Is it possible there is some bias in your numbers due to the somewhat restricted targeting of the survey?  (ie: I'm not sure about the exposure sUAS gets with a wide swath of…"
Tuesday

Developer
Rob_Lefebvre commented on Randy Sonnicksen's blog post Multi-Rotor Scalability
"It's not quite so simple.  Depends on the blade design in each case.  Quadcopter blades can be rigid and razor sharp, capable of cutting aluminum (as I have personally seen), or they can be blunt and flexible.  Helicopters blades…"
Apr 23

Developer
Rob_Lefebvre commented on Randy Sonnicksen's blog post Multi-Rotor Scalability
"Yes, yes it could.  That is why ArduCopter can control a Helicopter.  And it does a good job. I don't think one could draw any hard and fast rule about reliability of a swashplate vs. multiple variable pitch props.  It depends…"
Apr 23

Developer
Rob_Lefebvre commented on Randy Sonnicksen's blog post Multi-Rotor Scalability
"Vladimir, exponential is commonly used to describe any function involving an exponent. "
Apr 23

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 Helicopter Demonstrates 1 Hour Flight with 1KG Payload

Posted on April 19, 2016 at 8:00pm 17 Comments

Autonomous Systems Cooperative is pleased to present a new helicopter design which has been engineered from the ground up for UAV usage. Today, on just its 3rd test flight, the Procyon 800 Electric helicopter design demonstrated capability of…

Continue

Announcing Formation of Autonomous Systems Cooperative

Posted on April 7, 2016 at 2:00pm 20 Comments

Today I am pleased to announce the formation of a new commercial support company which I have founded in combination with Bill Bonney (creator of …

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NOVAerial Robotics Ground Control Station

Posted on March 24, 2016 at 7:36pm 34 Comments

Wanted to present my mobile ground control station as an example of the type of system that professional UAV operators will probably be using in the future.  I converted this cargo trailer into a mobile office to support my flight testing activities on large systems, in a country where the weather isn't…

Continue

Long-Line Sensor Payload Demonstration

Posted on March 19, 2016 at 6:00pm 12 Comments



Today I did something a little bit unusual, and definitely more difficult than flying around with a camera. A possible commercial customer asked to see a demonstration of a helicopter flying with a 2.5kg sensor.  This sort of thing is commonly done for magnetometer surveys for mining…

Continue

Comment Wall (14 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,
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!

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