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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

Latest Activity

Felixrising replied to Hugues's discussion DO SET ROI and/or strange automission pathway between waypoints in the group ArduCopter User Group
"Very good point. What is the HDOP value before take off? You should be less than 2.0."
4 hours ago

Forrest Frantz replied to Hugues's discussion DO SET ROI and/or strange automission pathway between waypoints in the group ArduCopter User Group
"In both cases it nails the later GPS coordinates.  So is one possibility that it is locking onto more sats as it flies and getting more precise.  One way to determine this is to fly the course twice, one right after the other, landing and…"
5 hours ago
Felixrising replied to Hugues's discussion DO SET ROI and/or strange automission pathway between waypoints in the group ArduCopter User Group
"Have you changed the extended tuning settings for nav?"
5 hours ago
Hugues added a discussion to the group ArduCopter User Group
20 hours ago
Hugues replied to Serge B's discussion Your advice for mapping plane
"I reinforce the talon surfaces using glass fiber cloth and wood glue like this: "
21 hours ago
Hugues replied to Óscar Moreno García's discussion Soldering motor cable
"you can resolder easily you motor wire, based on the picture you posted. 1-strip about 5mm of the red silicon on each piece of wire 2-Tin each tip with solder : do not hesitate to put lots of solder on the tips 3-place the two 5 mm tips parallel to…"
21 hours ago
Elios commented on Hugues's blog post AirbotServices fixed wing - wing extensions testing
"HI Dave, from where you have ordered the tricycle landing gear? can you please post the link here."
22 hours ago
Elios commented on Hugues's blog post AirbotServices fixed wing - wing extensions testing
"Hi Hugues, Have you tried to fly it without the wing extension? Also you were saying it was flying very slow, is it like 4/10 compared to any other planes you have tried before? "
22 hours ago
Hugues commented on Hugues's blog post AirbotServices fixed wing - wing extensions testing
"Hi Elios, I did not try any other plane so I cannot compare with speeds of other models. It is true that I was also scared by what lots of people said about how stalling was easy with the Talon if you did not fly fast enough. MaybeI have…"
22 hours ago
Elios commented on Hugues's blog post AirbotServices fixed wing - wing extensions testing
"HI Hugues, You were right, I saw the photo of Bormatec plane at the I just ordered 2 Talon with the extension wing. I needs 15 days to be hereMany users are saying that the talon is very fast  and it needs…"
Hugues commented on Babis HatziIoannou's blog post ArduCopter RSSI voltage modification
"Maybe, use some pull-up circuit to rescale your 1,5v to max 3,3v ?"
Hugues replied to AerospaceVlogger's discussion Supersonic, I'm going to do it.
"You should reuse some of the Area 51 retro engineered alien tech, such as magneto-Hydro-Dynamic techniques (MHD) generating high magnetic fields at the nose level of your plane, high amps currents, to create an aspiration force that will suck the…"
Hugues replied to Jaime's discussion How to Geotag images using Dataflash logs
"Alternatively to synchronizing with specific log messages, I also use a time synchro. This works like this: -With the camera you will use for your pictures, take a picture of a GPS application on your smartphone that will display the GPS time. -The…"
Hugues commented on Hugues's blog post AirbotServices fixed wing - wing extensions testing
"HI Elios, I'm not sure if you went really on my web site as I do not have a Bormatec on it and actually my web site is not yet public as it ios still under construction right now. I have a temporary site which is…"
Elios commented on Hugues's blog post AirbotServices fixed wing - wing extensions testing
"Hugues, Based on your experience, what flight duration the Talon with the extension wing can do? and what batteries it needs. If we want to add all accessories as the autopilot, antennas, vtx, telemetry, cameras...the payload will be…"
Elios commented on Hugues's blog post AirbotServices fixed wing - wing extensions testing
"HI Hugues, I went into your website and I saw a photo of a Bormartec Maja or Vamp plane. What is your experience with those planes versus the Talon? Which one is more stable and can have more payload and flight duration? Elios"

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Please tell us a bit about your UAV interest
Arducopter, Quad, Octocopters, X8 coaxial

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 -…


PIXHAWK powering critical attention points - Wiki complementary information

Posted on June 15, 2014 at 12:11pm 25 Comments


Integrating troubleshooting results from quite a few people describing power problems with Pixhawk or Pixhawk getting out of control (linked to ESCs' signal wires connected without a ground reference) I thought the current wiki information should be completed/updated with a synthesized diagram that…


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.



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


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

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…


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)


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…


/ / / / / / / 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!


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

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