Hugues
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Hugues's Groups

Hugues's Discussions

How to configure CAM_TRIG_DIST to ouput a PWM signal from a Pixhawk output ?

Started this discussion. Last reply by Hugues Mar 4. 5 Replies

Hi,I would lile to use the Survey function in mission planner which uses the CAM_TRIG_DIST method to trigger a camera at regular distance intervals.I'm using an infrared camera trigger which is activated by a PWM signal (configurable).The question…Continue

Is Minimosd incompatible with Sony NEX5R ?

Started this discussion. Last reply by Hugues Jan 7. 17 Replies

Hello,I'm trying to use my Sony NEX5 camera as a FPV camera using this HDMI AV converter :…Continue

NEVER connect a Capacitor backup or voltage protector on APM board

Started this discussion. Last reply by Hugues Nov 19, 2013. 71 Replies

Hi,Edit : from the posts below I deduce the issue seems specific to my config. Threfore I remove temporarily my request to add a line a caution in the wiki as it might not be a general problem for everyone, until further investigation and…Continue

Throttle channel 3 output either min, either max

Started Feb 7, 2013 0 Replies

Hello,I face a strange issue on my quadcopter 3DR:I calibrated the ESCs according to the following automatic procedure:1 Disconnect USB and battery. The entire system must not have power2 Turn your radio on and put the radio throttle stick at…Continue

Question about PITCH channel : what is forward, what is backward ?

Started Feb 3, 2013 0 Replies

hello,The question seems stupid but it is actually confusing for me to confugure the channel 2, pitch, on my Tx to correspond to what the wiki says : "CH 2: Pitch Forward = low PWM – Pitch Back = High PWM" Indeed , what is forward ? what is backward…Continue

[PROBLEM] Mission planner updater error

Started this discussion. Last reply by dudz Apr 17, 2013. 5 Replies

Hi,I launched today the mission planner that started an auto update. It starts downloading files updates (as visible in the console window) but after 2 minutes it stops with error, giving this display and error message:…Continue

LEDs use on APM2.5 board

Started this discussion. Last reply by TJ Feb 2, 2013. 1 Reply

Hello,I have seen a picture in the Wiki for the 2.0 APM board showing ouputs A9 to A4 being named "Motor LEDs".Is there any explanation what that is and how is it used ?For example can those outputs be used to power 12Volts LED strips ? (or is it…Continue

Programming with Arducopter/Arduino

Started this discussion. Last reply by duster3 May 6, 2013. 15 Replies

Hello,I would like to compile and upload the Arducopter code to my UAV. To do so I followed the instructions on the wiki, that is :-installed the Arduino 1.0.3 (Arudpilot) version on win7-installed the 2.8.1 software version (the two folders…Continue

Tags: Arducopter, Arduino, Programming

Sonar minimum distance ?

Started this discussion. Last reply by Leif Hedman Jan 9, 2013. 2 Replies

Hello,I have installed the sonar XLL-EZ0 on the quadcopter (3DR). Then I launch a sonar test though the CLI in the mission planner software. The arducopter is connected via USB only (no battery).The minimum reading with the sonar command is 20 cm.…Continue

Tags: EZ0, 3DR, Sonar

Power for analog pins (servos for roll/tilt, sonar, etc)

Started this discussion. Last reply by Hugues Dec 28, 2012. 3 Replies

Hi,On a 3DR quad arducopter, I am powering the APM2.5 with JP1 off and using the 5v input from the 3DR power module BEC (connects through the voltage measurement port).This powers , If I understood correctly, all of the APM2.5 boards including the…Continue

Tags: power, module, 3DR, servos, pins

 

Hugues's Page

◾ About Me:

◾I'm the founder of AirbotServices that provides UAV expertise and services for professionnals. We aim more particularly at serving the agriculture, real estate and industrial sectors.
Web site : www.airbotservices.com

Background:

◾Engineer - Ecole Polytechnique of Brussels (ULB), specialization in Telecom & Electronics
◾MBA - Solvay Business School (ULB).

Please tell us a bit about your UAV interest:
◾I dove into the subject a few years ago when I was searching how to upgrade a very bad camera on my 8 years old son's remote controlled helicopter.
◾I found the then the diydrones community on the basis of which I built up this passion.
◾Contributing Blogger and Editor of DIYDrones APMcopter and APMplane wikis.
◾Currently developing AirbotServices products and services.

Latest Activity

Hugues commented on Trent at MyGeekShow's blog post MyGeekShow's Daily USA Trip Videos Start December 1st
"@Seth, you're wrong. This has been done totally safely and legally. Check the history of this before talking negatively. @Trent, looking forward to the next steps. Thx for posting."
6 hours ago
Hugues commented on Adrián Nagy Hinst's blog post GimBALL - 3D printed DIY Gimbal with closed hull - PART2 (assembly)
"Hello, Can you share the STL files for the parts?  Looks very good."
6 hours ago
Hugues commented on Gisela & Joe Noci's blog post Laser Rangefinder assisted Landings on our SurVoyeur MK-II UAV system
"Joe, is this your own flight controller HW and sw or your own HW running APM:plane or a for of it?  God like! (Or r u an alien disguised as a smart human being?)"
18 hours ago
Hugues commented on Randy's blog post ArduCopter 3.2 Released
"Thank you Randy & team for your excellent work!"
yesterday
Hugues commented on Andrew Tridgell's blog post APM:Plane 3.2.0 released
"Thank you Tridge and team for your excellent work!"
yesterday
Hugues commented on Adrián Nagy Hinst's blog post GimBALL - 3D printed DIY Gimbal with closed hull - PART1 (design)
"Why don't you produce this ? It would sell like hell"
yesterday
Hugues commented on Adrián Nagy Hinst's blog post GimBALL - 3D printed DIY Gimbal with closed hull - PART1 (design)
"love it! looks like the looks of the Oblivion 's drones (the movie)."
yesterday
Hugues commented on Hugues's blog post How-to guide: Pixhawk auto camera trigger (without CHDK)
"Hi Marshall, thx. What you setup in the stratosnapper GUI dépends on the control knob you will be using on your Tx. In my case I was using a three position switch on my Taranis radio, so I selected the three way switch in strato GUI. In the…"
yesterday
Hugues commented on Hugues's blog post 433 Mhz antenna comparison - DIY & standard stock models
"@Jake, surely lots of people are breaking the power limits. It is practically impossible to measure since it dépends on so many factors. @Fnoop, dBm means DB milliwatts, or in other words the reference unit being milliwatts. So yes, i was…"
yesterday
Fnoop Dogg commented on Hugues's blog post 433 Mhz antenna comparison - DIY & standard stock models
"@Hughes - Thanks for radio signals 101 :)  I looked up a bit further and found this entry which explains dBm better and that dB is a dimensionless unit.  You refer to dB a lot, but the graphs refer to dBm - are your figures all dBm?…"
yesterday
Jake Stew commented on Hugues's blog post 433 Mhz antenna comparison - DIY & standard stock models
"I got sidetracked and forgot to thank you for a great article with useful information.  We need more experiments and discussions like these. I still predict trouble on the 433 band though.  I think there's a lot of people illegally…"
Monday
Hugues commented on Hugues's blog post 433 Mhz antenna comparison - DIY & standard stock models
"Hi Jake, I can only agree with what you're saying about our stupid EU governments. This is why with so small emitting power I try to optimize my antenna designs..."
Monday
Marshall Cant commented on Hugues's blog post How-to guide: Pixhawk auto camera trigger (without CHDK)
"Hugues: When you set up the StratoSnapper using the GUI what do you set as the channels? The choices are Push Button, 2 Way Switch, 3 Way Switch and Stick. But since I will be having the APM control the shutter by DO_SET_CAM_TRIGG_DIST what do I set…"
Sunday
Jake Stew commented on Hugues's blog post 433 Mhz antenna comparison - DIY & standard stock models
"You're telling me all you have is 10mW across 1.75 Mhz? I think you need to look into that more.  Essentially your gov. provents you from transmitting anything at all?  That just doesn't seem right. If that's the case then…"
Saturday
Hugues commented on Hugues's blog post 433 Mhz antenna comparison - DIY & standard stock models
"Anyway in Europe we do not have a choice, it is 433mhz or nothing. APM telemetry bandwidth is totally fine with what the 433mhz band offers. No need for large bandwidth, this is not video."
Saturday
Hugues commented on Randy's blog post ArduCopter 3.2 ready for wider use
"It is indeed not required if you use it on the same board. I intend to use this one as the second GPS and that leaves me the compass free to use on another compagnon board, so I need a ground ref."
Saturday

Profile Information

Please tell us a bit about your UAV interest
All UAVs topics
Hometown:
Brussels

Hugues's Blog

AirbotServices fixed wing - wing extensions testing

Posted on September 16, 2014 at 12:30am 17 Comments

AirbotServices fixed wing is based on the well known XUAV Talon EPO frame. This plane has a standard wingspan of 1720mm . Although its wings are quite wide (total wing surface is 60 dm2 -…

Continue

Comment Wall (8 comments)

At 10:26pm on March 19, 2013, Oliver said…

Hi, I just posted the parts list with some notes in the comments below my original post on the gimbal.

Cheers,

Oliver

At 12:11am on March 20, 2013, Hugues said…

thx

At 12:52pm on November 7, 2013,
MR60
Forrest Frantz
said…

Didn't want to say this in the crowd.  But I think mass distribution has a bearing on the PIDs as does distance from the respective axis.

Example:  Say there is a rectangular cubic battery pointing fore and aft at CG on a symmetric quad copter.  Say the rotors are 20 cm from their axis and the battery is 10cm x 2 cm.

o The torque factor exerted in pitch over the battery would be 20/(10/4) = 8 to 1

o The torque factor exerted in roll over the battery would be 20/(2/4) = 40 to 1

If you have two steel wheels of the same mass, the larger one will be more difficult to get rolling (there is a larger change in momentum).

So it is 5x easier to roll than pitch.  I think that should be accounted for in the PIDs?  But maybe I'm wrong.

Of course this is an extreme example where everything else weighs nothing, so the differences in ratios are never that high.  But it is common I think for the factors to be up to 1.5X.

Your thoughts?

At 1:42pm on November 8, 2013, Tyler McGahee said…

Yeah, the PIDs are definitely affected by the "mass distribution" (moment of inertia), as well as by the motors and propellers and ESCs and the control algorithm and on and on. I don't think it hurts to list the PIDs though. Could save some time when starting from scratch on a similar or identical rig.

At 10:37pm on November 21, 2013, Alejandro Cadavid said…

Hello,

A curiosity ... as I turn apm 2.5 and esc with 2 separate batteries.

Battery 1: APM 2.5 and FPV
Battery 2 Engines - BECS (servos)

Unrecognized?

Thank you!

At 7:28pm on March 11, 2014, Alejandro Cadavid said…

Ardupilot on PX4 + IO won't arm motors.

Hi I have the same problem Mystery 30A ESC's ...

You Might explain "load up the firmware ArduCopter" Bootload firmware?

System works without problem, arm and disarm perfectly.

Safety Switch OK.

Calibration OK, ENGINES TURN.

Connect and disconnect battery and ESC sounds uncalibrated, not save settings.

/ / / / / / / Can not save the ESC Mystery Calibration and PX4FMUIO / / / /

At 1:11pm on March 12, 2014, Alejandro Cadavid said…

Hi,

/ / / / / / / Can not save the ESC Calibration in PX4 FMU IO / / / /

You know it could be?

Another question.

You know how I connect to OSD Remzibi px4 as if telemetry data and to see video on my monitor?

We appreciate evidence.

Thanks for you time.

You are responsible to give answers of diydrones community? curiosity!

Thanks.

At 8:11am on August 26, 2014,
MR60
Forrest Frantz
said…

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