Gender
Male
About
About Me:
UAV control researcher
Please tell us a bit about your UAV interest
Flight control: - Low level dynamics control - Formation flight - Wind energy harvesting (thermal and dynamic soaring) - Path control - Nonlinear control Navigation: - Kalman filters (EKF, UKF, MHKF) - Particle filters Systems integration Fixed-wing aircraft design
Hometown:
Porto
Activity Feed
"Hi,
You must have a faulty gear, because mine last several flights and I do not shutdown the screen between the flights.
You should probably ask 3DR to replace the screen itself, as both batteries failing simultaneously sounds less probable.
Cheers"
You must have a faulty gear, because mine last several flights and I do not shutdown the screen between the flights.
You should probably ask 3DR to replace the screen itself, as both batteries failing simultaneously sounds less probable.
Cheers"
"Hi,
I guess that if the setup is something like the hobbyking paraglider:
http://www.hobbyking.com/hobbyking/store/__30790__HobbyKing_BelaTri...
http://www.hobbyking.com/hobbyking/store/__30801__HobbyKing_174_848...
the parafoil controls can be used…"
I guess that if the setup is something like the hobbyking paraglider:
http://www.hobbyking.com/hobbyking/store/__30790__HobbyKing_BelaTri...
http://www.hobbyking.com/hobbyking/store/__30801__HobbyKing_174_848...
the parafoil controls can be used…"
"Hi,
Are you sure you are not using the "Simple" or "Super simple" modes?
Those will change the "direction" of you commands, depending on the aircraft position relative to the start position."
Are you sure you are not using the "Simple" or "Super simple" modes?
Those will change the "direction" of you commands, depending on the aircraft position relative to the start position."
"Do you have any damping material between the controller and the frame?
If not, the propulsion vibration can cause the attitude filter to drift or at least produce erroneous estimates, which coupled with the control feedback action will produce…"
If not, the propulsion vibration can cause the attitude filter to drift or at least produce erroneous estimates, which coupled with the control feedback action will produce…"
"Hi,
A larger wing loading requires a larger angle of attack to produce the appropriate lift, if the aircraft is flying at the same speed.
Are you sure this pitch difference does not result from controller trying to keep a constant altitude for the…"
A larger wing loading requires a larger angle of attack to produce the appropriate lift, if the aircraft is flying at the same speed.
Are you sure this pitch difference does not result from controller trying to keep a constant altitude for the…"
"Hi,
This seems like a challenging development.
What you are suggesting seems like an extension of the "follow me" mode. The catch is on the mismatch between the copter GPS and the beacon (on the surface vehicle). The optical tracking might be able…"
This seems like a challenging development.
What you are suggesting seems like an extension of the "follow me" mode. The catch is on the mismatch between the copter GPS and the beacon (on the surface vehicle). The optical tracking might be able…"
"Hi,
What do you mean by "verify height"?
Cheers"
What do you mean by "verify height"?
Cheers"
"Hi,
I have a somewhat similar problem with my FrSky TH9X, which came with a 3DR Iris.
This weekend when I tried to takeoff for a second flight, the Iris had a strong tendency to fly to left, even crashing against a stone that was some distance to…"
I have a somewhat similar problem with my FrSky TH9X, which came with a 3DR Iris.
This weekend when I tried to takeoff for a second flight, the Iris had a strong tendency to fly to left, even crashing against a stone that was some distance to…"
"Yes, that seems like a good approach.
Cheers,
Ricardo"
Cheers,
Ricardo"
"Hi,
I am not sure about the I2C and GPS cables, but as they carry digital signals, there probably is no problem. Adding an external shielding (wire mesh or other) connected to the ground should avoid major interferences in long cables.
The antenna…"
I am not sure about the I2C and GPS cables, but as they carry digital signals, there probably is no problem. Adding an external shielding (wire mesh or other) connected to the ground should avoid major interferences in long cables.
The antenna…"
"Can you connect the servos directly to the receiver, just to make sure they are working?
If it is not the servos you should check the cables and make sure the servos are connected to the right port.
Otherwise, you might need to recalibrate the…"
If it is not the servos you should check the cables and make sure the servos are connected to the right port.
Otherwise, you might need to recalibrate the…"
"That can be a problem with your ESC signal input not going low enough. Normal ESCs will only activate if the pwm signal gets under a certain level."
"Did it arrived from factory working like that?
A possible solution is to reverse the elevator channel in the handset. For that, in the standard Iris+ handset, you need to press the menu key for several seconds, until it changes the screen content.…"
A possible solution is to reverse the elevator channel in the handset. For that, in the standard Iris+ handset, you need to press the menu key for several seconds, until it changes the screen content.…"
"It might be that the GPS is receiving interferences from other onboard systems.
3DR has some guidance on their website on how to troubleshoot some known issues: http://3drobotics.com/kb/troubleshooting/
Look for the "Poor GPS performance" section."
3DR has some guidance on their website on how to troubleshoot some known issues: http://3drobotics.com/kb/troubleshooting/
Look for the "Poor GPS performance" section."
"Hi,
Are you sure you have not switched the handset antenna with the telemetry radio antenna?
Usually the radios' antennas have a colored dot at the base, so that you can match them."
Are you sure you have not switched the handset antenna with the telemetry radio antenna?
Usually the radios' antennas have a colored dot at the base, so that you can match them."
