Alexey Dobrovolskiy
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  • Riga
  • Latvia
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Alexey Dobrovolskiy's Groups

Alexey Dobrovolskiy's Discussions

WiFi 5Ghz telemetry module for Pixhawk

Started this discussion. Last reply by Alexey Dobrovolskiy Apr 22. 8 Replies

Hi,Anybody knows WiFi modules similar to very popular esp-07 or XBee WiFi, but for 5GHz? I mean modules compatible with Pixhawk, ie with UART port and necessary software support.Continue

Tags: 5Ghz, WiFi

Droneshare support

Started this discussion. Last reply by Alexey Dobrovolskiy Sep 14, 2015. 1 Reply

Hi,how to reach Droneshare support? support@droneshare.com it seems not working.My problem:I have uploaded my mission to Droneshare…Continue

UAV regulations in international waters

Started Aug 31, 2015 0 Replies

Hi,Anybody has understanding how regulated drones usage in international waters (high seas)?Continue

 

Alexey Dobrovolskiy's Page

Latest Activity

Alexey Dobrovolskiy replied to Adrian Onsen's discussion Oblique photogrammetry possible? in the group UgCS
"Hi, we are going to implement Facade Scan too in one of nearest UgCS version. Currently you can plan such kind of missions manually using 3D interface of UgCS. You can import rough 3D model of your buildings into UgCS (from KMZ file) to simplify…"
Jun 16
Alexey Dobrovolskiy replied to Steve Cudmore's discussion Quadcopter Emulator Issues in UgCS 2.13 in the group UgCS
"Hi Steve, EMU-102 is a fixed-wing simulator :))))) Using DJI simulator you can play even in the office. After route upload (when DJI drone is in simulation mode) it will be relocated near first waypoint of your route.  Sometimes after this…"
Jun 13
Alexey Dobrovolskiy replied to Steve Cudmore's discussion Problems Performing 'Straight' Flight between Waypoints of Different Altitudes - UgCS in the group UgCS
"Hi Steve, it seems that you found how to export telemetry - I have got something on our email."
Jun 13
Alexey Dobrovolskiy replied to Steve Cudmore's discussion Problems Performing 'Straight' Flight between Waypoints of Different Altitudes - UgCS in the group UgCS
"Please post mission and telemetry log, or send it to ugcs@ugcs.com, we will try to sort this out"
Jun 11
Alexey Dobrovolskiy replied to Steve Cudmore's discussion Quadcopter Emulator Issues in UgCS 2.13 in the group UgCS
"Hi Steve, could you post your mission here? I'll check what is wrong. Internal UgCS emulators don't have heigh fidelity. They are implemented to give posibility to play with UgCS without real drones - to be familiar with mission planning,…"
Jun 8
Alexey Dobrovolskiy replied to Steve Cudmore's discussion Problems Performing 'Straight' Flight between Waypoints of Different Altitudes - UgCS in the group UgCS
"Hi Steve, please see this post - https://diydrones.com/profiles/blogs/precision-of-vertical-maneuvers-it-s-all-about-safety May be in your mission waypoints are too close to each other. Try to place they in 10 m in horizontal projection and…"
Jun 8
Alexey Dobrovolskiy replied to Steve Cudmore's discussion Tablet Selection UGCS for DJI Mobile Companion in the group UgCS
"Hi Steve. It's quite hard to recommend Android devices with confidence. We know cases when pretty working device had problems after Android upgrade. Usually all devices recommended by DJI (for DJI GO) will work also with UgCS. P.S. I personally…"
Jun 3
Alexey Dobrovolskiy replied to Tom Smith's discussion Strange 'Change Yaw' behavior in the group UgCS
"Hi Tom, unfortunately there is no way. Naza-M v2 in automatic mode flies with nose pointing to the next waypoint. The same for A2."
May 30
Alexey Dobrovolskiy left a comment for DAVID RUIZ VALLS
"Hi David, please send request to UgCS support team. It will be better if you can send your mission and logs - both from laptop and Android device. Here you can find instructions where to get logs - https://www.ugcs.com/en/page/support"
May 7
Alexey Dobrovolskiy left a comment for DAVID RUIZ VALLS
"Hi David, I can answer on your question regarding getting CSV file from UgCS. First you neext to export telemetry from UgCS to TLM file. Second you can use "UgCS Telemetry tool" to convert it to CSV ot…"
May 6
Alexey Dobrovolskiy replied to John Brady's discussion Custom DEM - Coordinate System? in the group UgCS
"Hi John, I see that our engineers answered to your question. Please react to them. P.S. UgCS uses Web Mercator (EPSG:3857) internally but it is able to accept many different projections (anything supported by GDAL) and convert them accordingly."
Apr 26
Alexey Dobrovolskiy replied to Michael Gray's discussion Error Altitude too high in the group UgCS
"Please check min AMSL and max AMSL in elevation profile window. Difference should be lower comparing to the limit set in DJI GO app. Limit set in DJI GO (in reality this is a limit stored in autopilot, if you never set max altitude it has some…"
Apr 26
Alexey Dobrovolskiy replied to John Brady's discussion Custom DEM - Coordinate System? in the group UgCS
"Hi John, yes, this email is right. I have found your case - UGCSSD-4395. Did you receive automatic confirmation that your request was received? Our engineers are working on your request, they will contact you soon. I have reproduced described…"
Apr 26
John Brady left a comment for Alexey Dobrovolskiy
"Alexey, I do not have any trust worthy data for Greenland. My translation for my data in Alaska is off, it should put me in Alaska, but is putting me in Greenland, Africa, or the middle of the Pacific depending on which projection of WGS84 I use. I…"
Apr 25
Alexey Dobrovolskiy replied to John Brady's discussion Custom DEM - Coordinate System? in the group UgCS
"Hi John, UgCS uses WGS84 only. You can send one of your DEM files (smallest one :) to our support team, they will help."
Apr 25
Alexey Dobrovolskiy replied to Christian Freydl's discussion shutter control for DJI M600 (A3) in the group UgCS
"Hi Chris, we can't promise anything particular. We are limited by DJI SDK functionality..."
Apr 25

Profile Information

Please tell us a bit about your UAV interest
I'm working for SPH Engineering - developer of UgCS - ground control software in Latvia.
Hometown:
Riga

Alexey Dobrovolskiy's Blog

Multiple drones and multiple operator support in U[g]CS

Posted on December 26, 2013 at 12:03am 2 Comments

 

Here is footage from software showing our software capability to simultaneously plan and execute mission with 3 different drones. Arducopter, Microdrone MD4-200 and Mikrokopter were used.

As we support at this moment Arducopter, Mikrocopter, ArDrone, Microdrone this demo can be interesting at least for professional users of…

Continue

Comment Wall (7 comments)

At 11:11am on April 17, 2015, Mike Governale said…

Thanks Alexey...  and good luck with your latvian farmers.

We carry a modified Canon PowerShot A810 (with standard lens) for the NDVI imagery.  We fly the same mission with another "unmodified" A810 to capture the 16 mp images.

We use Kolor's AutoPano Giga for stitching the images and process the NDVI with a plugin on ImageJ software.

For small crop acreage using our Y6 frames, we have found that 170feet altitude and 17mph speed provides the best stitching image resolutions desired while still leaving plenty of battery life for a safe return to home.  Our flight program triggers image captures by distance covered (and not triggered by way points) and we have flown this configuration in varying direction 20mph winds without loosing images because we exceeded the PowerShot A810 2.5 second refresh rate.

At some point, we hope to be able to afford using (and risking, if you know what I mean) modified cameras with a much larger sensor area (like a Sony Nex 6).  This would allow us to fly lower and/or faster with the same resolution.

We will stay with the cheaper cameras for now because satisfy requirements.  We are starting to test using our Skywalker's (1900 mm motorized gliders) for larger acreage surveys.  With these we have greater flight times, but the challenge is how to fly slow enough and low enough.

As you must know....   it is a continuous learning experience while trying to balance the costs, etc.

I hope this was somewhat helpful.

Mike G.

At 3:34pm on April 24, 2015, Alexey Dobrovolskiy said…

Thanks Mike,

could you tell also is GSD important for NDVI calculation? 

At 1:01pm on December 10, 2015, Ali said…

hi, there, I have seen a picture from power line inspection.

that was very clear and low noisy.

I want to know about your flight plan. the height, ortho imaging or oblique,

the distance from power line axis and the coverage of images(side coverage and along coverage). i tried that and have processed my data with pix4d but the result was not as the same as your pictures.

At 1:35pm on December 10, 2015, Alexey Dobrovolskiy said…

Hi,

as I remember it was ortho, altitude over line about 10 meters, distance from power line axis about 10 meters too.

And we make too much photos, processing time was about full day and night, but quality was perfect.

At 8:05am on December 11, 2015, Ali said…

thank you so much, by the way, can i ask you about your camera type.?

At 8:19am on December 11, 2015, Ali said…

sorry one more question.

i want to know about number of flight path in direction of power line.

i guess it must be two. with 10 meters distance from both sides of power line.

if its more please tell me.  

yours truly

Ali

At 4:22pm on April 25, 2018, John Brady said…

Alexey, I do not have any trust worthy data for Greenland. My translation for my data in Alaska is off, it should put me in Alaska, but is putting me in Greenland, Africa, or the middle of the Pacific depending on which projection of WGS84 I use. I am trying to figure out the proper projection that UgCS is using so my data from Alaska is where it belongs, in Alaska. Thanks!

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