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marc.kulhavy's Groups

marc.kulhavy's Discussions

Crash due to uncommanded yaw - log file analysis needed

Started this discussion. Last reply by Calvin May 30, 2016. 43 Replies

Can anybody help analysing the cause of this crash?The copter started a test mission without any troubles and after reaching a waypoint, he started to yaw constantly but continued to follow the…Continue

The reason for being unable to upload new firmware is....

Started Jan 25, 2015 0 Replies

...that on some computers (like the one I am using right now), there are some other COM devices like GPS and some broadband adapters installted, which seem to have the option of forcing them into…Continue

Tags: firmware, upload, Pixhawk

We need a disclaimer!

Started this discussion. Last reply by Chris Anderson Sep 3, 2012. 9 Replies

I think we need a disclaimer to publish across the whole forums and store sites attached to this projects.It should be a collection of advises and principles we all should accept to followThis thread…Continue

Tags: Disclaimer

Worst Crash ever, Log analysis needed!

Started this discussion. Last reply by robert fujii Aug 24, 2014. 113 Replies

Hey folks! Yesterday I had my biggest, worst and most scary crash with my 3DR Quad.Our local firefighters had an open day for public and presented their equipment, did some presentations, they had a…Continue

Tags: Log, Crash


marc.kulhavy's Page

Profile Information

About Me:
IT Engineer and professional Aerial Photographer at
Please tell us a bit about your UAV interest
Aerial Phography, Photogrammetry, Landscape/Farming Research, 3D-Reconstruction, Digital Elevation Models

Marc.kulhavy's Blog

Flying at No Mechanical Energy Cost: Disclosing the Secret of Wandering Albatrosses

Posted on September 9, 2012 at 12:00am 4 Comments

I found a very interesting journal article about the flying techiques of albatrosses. It describes their ability to soar extreme distances by using the different windspeeds over the open sea, similar to the flying technique of dynamical soaring we use for hanggliding.

It's in PLOS One …


This is how we all should tune in our copters...

Posted on December 31, 2011 at 8:00pm 3 Comments

Happy New Year to everyone!

I found this articles while searching methods for effective PID tuning:

The method is described here:…


Comment Wall (1 comment)

At 6:21am on August 26, 2012, Marvin K. said…

Hi Marc,

bitte schick mir deine Nummer nochmal ich hab sie glaube ich ausversehen gelöscht. sorry




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