Gender
Male
About
Location
Sofia
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
Activity Feed
"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 possible.
This way you…"
This way you…"
"Most items I'm buying from Hobbyking.They doing well in Europe."
"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…"
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…"
"Thanks a lot!
I have educational photogrammetry project and the prize will more than helpful !"
I have educational photogrammetry project and the prize will more than helpful !"
"I can guess 41 man years for the development."
"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…"
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…"
"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…"
How to avoid and reduce the power cables…"
"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."
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."
"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…"
Y vibrations can be caused by many factors, but seems there the folding legs are the source.
Z vibrations are normal.
Anyway, it is…"
""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, can see how many times…"
Looking at the clip diagram, can see how many times…"
"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, will be…"
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, will be…"
"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."
Rubber dampers cannot work without enough weight."
"Do you have some lead weight below your top damping plate?"
"Randy is right as usual, but he is a brave man ;-)
I am not and would like a calm controller..."
I am not and would like a calm controller..."
"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…"
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…"
"I sent you reply in the other thread: too much Y vibrations."
