Vesselin Goranov
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  • Sofia
  • Bulgaria
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Vesselin Goranov's Groups

Vesselin Goranov's Discussions

Upgrade to 3.3.2 - Alt Hold rising full trottle up

Started this discussion. Last reply by Bernardo Apr 10, 2016. 34 Replies

Hi All!My Pixhawk is installed on Mariner quad (500). With the version 3.2 it has many nice flights, with very good ALT Hold control and AUTO flights.After recent upgrade to 3.3.2, it changed its…Continue

 

Vesselin Goranov's Page

Latest Activity

Vesselin Goranov replied to Sriram's discussion Pixhawk Stability in the group PIXHAWK
"When I'm testing new drone, especially large one, always doing tethered flight tune. This ensures good stable flights, and no risk to break the new "bird". Moreover I'm living near the airport, where test flights are not…"
Mar 24
Vesselin Goranov commented on Klaus Heinrich's group PIXHAWK
"Most items I'm buying from Hobbyking.They doing well in Europe."
Mar 24
Vesselin Goranov replied to Peter Arnold's discussion Pixhawk Hex Take Off Stability problems in the group PIXHAWK
"Hi, Seems you do not have good accelerometer calibration. I have same issue when move the copter to different location - 20-30 km or more from the previous calibration site. You should first calibrate the compass and then accelerometer in all…"
Mar 2
Vesselin Goranov replied to electrolics inc's discussion ugcs open license photogrammetry disabled? in the group UgCS
"Thanks a lot! I have educational photogrammetry project and the prize will more than helpful !"
Mar 1
Vesselin Goranov replied to electrolics inc's discussion ugcs open license photogrammetry disabled? in the group UgCS
"I can guess 41 man years for the development."
Feb 25
Vesselin Goranov replied to seyedali's discussion Pixhawk capability in the group PIXHAWK
"Yes, Pixhawk is very reliable and easy to implement in almost any configuration of octacopter. But one issue have to note - unmanned copter above 25 kg is not allowed to use in most countries due to number of regulations. You should have special…"
Feb 25
Vesselin Goranov replied to Tyler Troutt's discussion Starting PID Values for Larger Quads in the group Pixhawk 2 User Group
"The tethered tuning must be done outside, between two poles or trees. It is must on large drones. Extended cables are OK, if they do not interfere too much with the compasses of the flight controller. How to avoid and reduce the power cables…"
Dec 21, 2016
Vesselin Goranov replied to Tyler Troutt's discussion Starting PID Values for Larger Quads in the group Pixhawk 2 User Group
"Hi, I am using tethered set with bungee for all new frames and controllers, for precise manual tune of the PIDs before the first flight. You can look at my post here. The procedure is well described here."
Dec 20, 2016
Vesselin Goranov commented on Marco Robustini's video
Thumbnail

APM Copter V3.2 - "DJI S900" with "3DR Pixhawk" board and "UBlox Neo M8" gps

"I have installed new camera recently and tested in flight. All was OK (exept the battery, that has dead cell at the end of the flight). After log analyzing, I found Err: 0-250 in the mid of the flight. Does anybody know what that mean?"
Jul 5, 2016
Vesselin Goranov replied to Rob_Lefebvre's discussion AC3.3 Vibration Logging Discussion Thread
"The props making different vibrations, but it is easy to measure those by the smartphone apps like Seismograph. Y vibrations can be caused by many factors, but seems there the folding legs are the source. Z vibrations are normal. Anyway, it is…"
May 19, 2016
Vesselin Goranov replied to Rob_Lefebvre's discussion AC3.3 Vibration Logging Discussion Thread
""Clip" represents the max level, the sensors and EKF can manage - it is like the sound, when the level is too high, the amplifier is overloaded, cannot reproduce and "clips" - i.e. cuts the signal. Looking at the clip diagram,…"
May 19, 2016
Vesselin Goranov replied to Rob_Lefebvre's discussion AC3.3 Vibration Logging Discussion Thread
"Thanks for the beer proposal! I appreciate that ;-)  Never been at Cape Town, and planning to come. Now the controller seems OK, you can try new autotune for sure - can return existing params anytime. Also can reduce the weight to 20 grams,…"
May 18, 2016
Vesselin Goranov replied to Rob_Lefebvre's discussion AC3.3 Vibration Logging Discussion Thread
"The good results are with 20-30 grams piece of lead glued below the top plate. It gives the controller platform more inertia. Rubber dampers cannot work without enough weight."
May 17, 2016
Vesselin Goranov replied to Rob_Lefebvre's discussion AC3.3 Vibration Logging Discussion Thread
"Do you have some lead weight below your top damping plate?"
May 17, 2016
Vesselin Goranov replied to Randy's discussion Copter-3.3 beta testing
"Randy is right as usual, but he is a brave man ;-) I am not and would like a calm controller..."
May 16, 2016
Vesselin Goranov replied to Gerhard Laubscher's discussion Vibe Xok Ybad IMU problem
"Hi, Here is link that may help: http://ardupilot.org/copter/docs/common-vibration-damping.html The sensors orientations are there. So standard (0 = No rotation) X is front/back, and Y is left/right direction. Too aggressive PIDs can cause more…"
May 16, 2016

Profile Information

About Me:
Electronics engineer. Diver and Pilot.
Please tell us a bit about your UAV interest
UAV design for photo and video applications.
Hometown:
Sofia

Comment Wall (2 comments)

At 6:32am on April 19, 2016, mohsein said…

Hi

thank you for your perfect job

would you pleas let me know about the tuning parameters you have used on your pixhawk

thank you so much

At 11:26pm on April 19, 2016, Vesselin Goranov said…

Hi Mohsein,

Will post some params on the forum.

Rgds

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