Martin
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  • Lausanne
  • Switzerland
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Latest Activity

Martin commented on Nuno's blog post V-Map precise aerial mapping
"I have been using similar system already two years. Also with RTK. The advantage comparing to pixy, is that it actually works in high dynamic environment, thanks to L1/L2 receiver. I tested a similar system to Pixy, also L1 only, both in RTK and…"
17 hours ago
Gustavo Avellar left a comment for Martin
"Hi Martin, I can send you a copy of my thesis, but it's written in Portuguese. I'll publish this as a jornal article in English soon. When I do that, I'll let you know."
Friday
Martin commented on Hugues's blog post How-To avoid sparks when connecting battery
"Isn't it better to use good quality connectors like Jeti Anti-Spark  http://www.espritmodel.com/jeti-afc-anti-spark-connectors-5-5mm-150... ? ; It is cheap, light and safe solution."
Jul 17
Martin replied to Rocketman's discussion Help! No heartbeat packets.
"I have exactly the same problem with my APM 2.6. My brand new board was working flawlessly during 10-15 flights and then it suddenly stopped working, luckily on a table. I lost all control and connection with MP. I was not able to connect it again,…"
Apr 25
Martin commented on Emlid's blog post NAVIO: RTK demonstration
"Very nice. I know that it's just the beginning but It would be good to show the performance with respect to a reference GNSS receiver (e.g dual freq, surv. grade) and also demonstrate its performance under some dynamics. I am afraid that the on…"
Apr 16
Martin commented on Euan Ramsay's blog post dronelaws.net online
"Euan: I think in Switzerland  there is not any limitation under 500g. That is the reason why Sensefly's Swinglet is under this limit."
Aug 19, 2013
Martin replied to Darrell Burkey's discussion Need help with large multi rotor
"Hi, sorry for my late response. I tuned the param. only a little bit. Even with default pids it flies flawlessly. I am still on the 2.91 but both altitude and position hold are rock solid. Firstly I had really problems to tune the alt. hold and…"
Jul 2, 2013
Martin replied to Darrell Burkey's discussion Need help with large multi rotor
"I have a coaxial octo with APM, with Axi 2814/22, xoar 12x6 and E-prop 11x5 running it on 5 cells lipo. The total weight is 5kg. I fly only in manual mode and so far without any problem. I like how it behaves and I can directly compare it with my…"
Jun 26, 2013
Martin commented on Jegan M's blog post High Accuracy DTM Editing and Orthophoto of a Mining Area Using UAV Imagery
"This is nice, but what is the absolute precision? 0.2 m GSD is one thing, but what is the RMS on the check points? You did not say anything about the UAV, if it was <10kg UAV and you used indirect orientation approach or big UAV with GPS/INS…"
Jun 10, 2013
Martin commented on Jegan M's blog post High Accuracy DTM Editing and Orthophoto of a Mining Area Using UAV Imagery
"Exactly what I expected-no answers, just an advertisement for a processing service. Nothing special so far..."
Jun 9, 2013
Martin commented on Jegan M's blog post High Accuracy DTM Editing and Orthophoto of a Mining Area Using UAV Imagery
"How does the processing quality stay in comparison for instance with Pix4D, which is considered as a gauge of performance of the UAV image processing? You are talking about the resolution but what about the precision on the check points? How many…"
Jun 7, 2013
Martin commented on Georacer's blog post Hill Cruiser - An RC Model Autopilot
"Well done, I am looking forward to seeing some videos from flying. Just one thing. In your presentation, the small device in the picture in Hardware section is not barometer but DIY magnetometer. "
Apr 27, 2013
Martin commented on Daniel Portillo's blog post Results of two years of work.
"Nice platform and results. I am just curious, what do you mean by two years of intensive development? What is custom on it apart from the integration of APM into the standard model? It is not obvious from the video, Thanks"
Apr 23, 2013
Martin commented on Enoc Sanz-Ablanedo's blog post Geometric Camera Calibration for use in Photogrammetry
"I agree with Enoc, proper pre-calibration is still the key for a precise work. It might not be important if you are using poor zoom cameras but for instance with modern mirror-less cameras with fixed lenses it definitely makes sense. With the…"
Apr 22, 2013
Martin commented on Enoc Sanz-Ablanedo's blog post Geometric Camera Calibration for use in Photogrammetry
"Ho do you identify the targets? Manually or automatically?  Could you show us the positions of the cameras- did you stay only on the ground during the image capturing or did you also use something like a telescopic platform for taking pictures…"
Apr 22, 2013
Martin commented on Daniel Allen's blog post 12-Rotor with the RED Epic Camera
"It is really nice machine, but it is definitely not the first developed 12-rotor copter. The price is just insane. $49 000 without equipment? Using cheap Chinese T-motors (I am not saying that they are not good), standard Xoar props, I do not see…"
Apr 10, 2013

Profile Information

Please tell us a bit about your UAV interest
DIY
Hometown:
Lausanne

Comment Wall (1 comment)

At 4:57am on July 25, 2014, Gustavo Avellar said…

Hi Martin,

I can send you a copy of my thesis, but it's written in Portuguese.

I'll publish this as a jornal article in English soon. When I do that, I'll let you know.

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