Alexey Dobrovolskiy
  • Male
  • Riga
  • Latvia
Share

Alexey Dobrovolskiy's Friends

  • Siim
  • JaVa
  • Tom
  • Jose Barreiros
  • Charlie
  • Bernardo Espinosa
  • Matt Johnson
  • james laney
  • Daniel Perez
  • Janis Kuze
  • Matt Tompkins
  • Euan Ramsay
  • Will Fellmeth
  • Ali
  • Ryan Perez

Alexey Dobrovolskiy's Groups

Alexey Dobrovolskiy's Discussions

WiFi 5Ghz telemetry module for Pixhawk

Started Jun 10 0 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 commented on Kristaps Brass's blog post Comparing Precision of Autopilots for Survey Missions - Pixhawk with ArduCopter firmware
"Any ideas how to make comparison clear and understandable? What data should be included to table? We have trajectories of each tested drones and original route used for tests…"
Jun 26
Alexey Dobrovolskiy commented on Kristaps Brass's blog post Comparing Precision of Autopilots for Survey Missions - Pixhawk with ArduCopter firmware
"ArduCopter (on Iris) and Phantom 4 were the best. Alsmost ideal flight precision. PX4 (on the same Iris) was good but ArduCopter still better. My congratulations to the ardupilot team and contributors - it's marvelous that open source autopilot…"
Jun 22
Alexey Dobrovolskiy replied to kurt's discussion UGCS 2.11 Problems / Can I do tablet rollback? in the group UgCS
"In UgCS you can add any number of waypoints before/after photogrammetry/areascan. We recommend to set this wp1 with altitude enough to reach any other waypoint of your route. "
Jun 16
Alexey Dobrovolskiy replied to kurt's discussion UGCS 2.11 Problems / Can I do tablet rollback? in the group UgCS
"Hi, didn't get where is problem here. Suppose we have route with 40 waypoints. First flight was interrupted after WP20. After RTH, landing and battery change you will specify WP20 as new start point. Upload route and start mission. Drone will…"
Jun 16
Alexey Dobrovolskiy replied to Stevod's discussion Why no Yaw in Telemetry? in the group UgCS
"Hi David, you are right. UgCS shows only heading and course in telemetry. Nobody asked us to show yaw. For copters yaw isn't vital parameter parameter at all because it can fly in any directions. For fixed wing drones yaw is controlled by…"
Jun 14
Alexey Dobrovolskiy replied to kurt's discussion UGCS 2.11 Problems / Can I do tablet rollback? in the group UgCS
"Hi, new behavior is much more safe. You need to have first waypoint of your mission near your actual take-off position with altitude high enough to fly safely to any other waypoint of your route.When you select new "start" waypoint after…"
Jun 14
Alexey Dobrovolskiy posted a discussion

WiFi 5Ghz telemetry module for Pixhawk

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.See More
Jun 10
Alexey Dobrovolskiy replied to Bob vd Meij's discussion UGCS Compatibility: DJI M600 Pro + Ronin MX + Sony A7R (ii) in the group UgCS
"Some samples. Here we have 2 entries for Canon with different lenses: We can add both cameras to the profile of particular copter type: And finally in Photogrammetry tool we can select any camera added to the vehicle profile:"
Jun 10
Alexey Dobrovolskiy replied to Bob vd Meij's discussion UGCS Compatibility: DJI M600 Pro + Ronin MX + Sony A7R (ii) in the group UgCS
"Hi Bob, we don't have Ronin MX so I don't know is it works with UgCS. Couple of months ago I heard that it wasn't possible to trigger camera even from DJI GO. Below are my comments on your questions (when I can say something..) Is…"
Jun 10
Alexey Dobrovolskiy replied to Eben N. Broadbent's discussion Save flight plan and load into multiple flights? in the group UgCS
"Excellent samples, thank you!"
Jun 10
Alexey Dobrovolskiy replied to Eben N. Broadbent's discussion Save flight plan and load into multiple flights? in the group UgCS
".. and this"
Jun 10
Alexey Dobrovolskiy replied to Eben N. Broadbent's discussion Save flight plan and load into multiple flights? in the group UgCS
"I have registered this as feature requests"
Jun 10
Alexey Dobrovolskiy replied to Eben N. Broadbent's discussion Save flight plan and load into multiple flights? in the group UgCS
Jun 10
Alexey Dobrovolskiy replied to Eben N. Broadbent's discussion Save flight plan and load into multiple flights? in the group UgCS
"Hi, could you send samples of your routes with "eight" pattern to ugcs(at)ugcs.com? Ysing your samples we will discuss it in details. Couple of years ago we implemented such pattern for one of our custom version (for aerial targets :),…"
Jun 10
Alexey Dobrovolskiy replied to Eben N. Broadbent's discussion UGCS with fixed-wing in the group UgCS
"Hi Adam, yes, exactly. UgCS will work with fixed wing, but you should tune your bird using MP. Regarding VTOL - most probably no. We never tested UgCS with VTOLs."
Jun 9
Alexey Dobrovolskiy commented on Kristaps Brass's blog post Universal Adapter for DJI Gimbals
"Hi, it's not finished yet. We will announce availability."
Jun 9

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 (6 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

You need to be a member of DIY Drones to add comments!

Join DIY Drones

 
 
 

© 2017   Created by Chris Anderson.   Powered by

Badges  |  Report an Issue  |  Terms of Service