About

About Me:

French hobbyist


Please tell us a bit about your UAV interest

I plan to build an indoor autonomous UAV, based on a coaxial helicopter.


Hometown:

Paris


Activity Feed

Leon commented on Leon's blog post BOB4 - new website in english! (Indoor UAV)
"> Whoever does a line following copter will be the 1st.
Here is a helicopter that does line following.
https://www.youtube.com/watch?v=CEkcA-_ji10"
Feb 13, 2012
Leon commented on Leon's blog post BOB4 - new website in english! (Indoor UAV)
"There is no need of a sensor at the rear. The UAV can rotate so that it always faces 1 whall in front. Furthermore, I decided to put battery at the rear of the UAV, and it would have been difficult to incorporate another US rangefinder."
Feb 12, 2012
Leon commented on Leon's blog post BOB4 - new website in english! (Indoor UAV)
"@Jack :
With the sonars, you are right : I need to stay near a wall (up to or 3 meters is good).
But with the Wii-camera, if several IR spots are put on the floor the UAV could theoretically navigate through a building. Unfortunately this doesn't…"
Feb 12, 2012
Leon posted a blog post
I finally translated all the website of my home-made UAV in english.http://heli.bot.free.fr/index_en.html Do not hesitate to post any question or comment about the UAV, about my work, or about the website!Remember that this small UAV is totally home…
Feb 12, 2012
Leon commented on Leon's blog post 3D position estimation with a Wii-Remote camera
"@ Roald:
Sorry, but I don't have the reference of the lenses anymore. I have totally disassambled the 2 lenses that I used."
Feb 11, 2012
Leon commented on Leon's blog post 3D position estimation with a Wii-Remote camera
"@ Randy : Thank you for this idea. The assembly with "hot glue" works fine now. I don't want to use a more complex solution for the moment.
 
@ agmatthews : I think that it would be more robust to use :
* A sonar for altitude
* compass for…"
Sep 25, 2011
Leon commented on Leon's blog post 3D position estimation with a Wii-Remote camera
"For the lenses, I tried several configurations. I use 2 lenses that come from mini camera lenses.

When you look throuh the lenses assembly (with your eye), the image must be clear and wider than naturally.

And yes, the 2 lenses are just fixed with…"
Sep 19, 2011
Leon commented on Adam Rivera's blog post Lesson: always fly with telemetry or a spotter!
"Please also consider the danger of such an octocopter (2kg?) falling at high speed on a person or a car...
 
Leon."
Sep 4, 2011
Leon commented on Leon's blog post 3D position estimation with a Wii-Remote camera
"> Matt said : "This is similar technology used in motion capture systems"
Yes, but this only uses ONE camera, and the camera is ONBOARD. All the computing power is inside the UAV. I really prefer this approach.
 
I am using a custom hardware, based…"
Sep 3, 2011
Leon commented on Leon's blog post 3D position estimation with a Wii-Remote camera
"I forgot the scheme for better understanding:
 "
Sep 3, 2011
Leon posted a blog post
  In this video, I am using a UMI, a sonar for altitude, and a wii-remote camera. The wii-remote camera is a very small camera that is included in the wii-remote.The wii-remote camera gives directly the 2D coordinates of the IR spots in the image.…
Sep 3, 2011
Leon commented on David Browne's blog post Engineering analysis of RC helicopter control
"What kind of thesis is it? Master? PHD?
It is not written in the document.
 
Leon."
Jul 31, 2011
Leon commented on Henry Fletcher's blog post DIY/ Engineering Excitement over the past few months!
"I really like this design! This is very simple, credible. It should be great!
 
Leon."
Jul 24, 2011
Leon commented on Chris Anderson's blog post Anyone entering the Huntsville International Micro Air Vehicle Competition?
"I plan to attend to the European indoor IMAV competition in september."
Mar 23, 2011
Leon commented on Timothee guerin's blog post My first Autopilot Project: MAP-One
"This is very well explained on the OLIMEX site. But on several pages. You have to read the entire PCB-OLIMEX site.
http://www.olimex.com/pcb/index.html
Leon."
Mar 5, 2011
Leon commented on Timothee guerin's blog post My first Autopilot Project: MAP-One
"I only tried OLIMEX 2 times for PCB manufacturing. The quality is OK, and the price very low compared to competitors. PCB-Pool is more expensive than OLIMEX. If you live in Europe (France like me?), OLIMEX is probably the cheapest proto PCB…"
Mar 5, 2011
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