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Male
About
Location
Tehran
About Me:
Mechatronics graduate student, I have just started a new project to make a quadrotor (or quadcopter as most of the people say it). So I'm really just a novice. Hello world!
Please tell us a bit about your UAV interest
I want to build a quadrotor as a platform for my master's dissertation. This is just a beginning...
Hometown:
Tehran
Activity Feed
"No, I found nothing. I have stopped looking for answers since long ago though, there might be new ways to do this now after many updates and changes.
Good luck!"
Good luck!"
Is the mapping between the lean angles (roll & pitch) and RC channels 1 and 2 linear?As explained in the Stabilize Mode documentation, lean angles change between ANGLE_MAX and ANGLE_MIN based on the RC inputs from the pilot. This, in Control Theory…
"Interesting update on the EMAX ESC issue with Pixhawk: The issue is apparently resolved in the new generation of EMAX Simon ESCs!
I was making a new quadrotor and again decided to use Emax Simon ESCs despite their compatibility issue with Pixhawk…"
I was making a new quadrotor and again decided to use Emax Simon ESCs despite their compatibility issue with Pixhawk…"
"That's a good solution if you want raw sensor data (although you could also easily obtain the raw data of Pixhawk sensors from Dataflash logs without having to figure out anything about Mavlink/APM). But I need the processed & filtered data, and I…"
Hi,I need to log the X,Y & Z accelerations (described in the inertial frame) and angular velocities & accelerations (p, q, r and their time derivatives) for offline analysis. I am using a Pixhawk equipped with Copter 3.3 firmware.The only data…
"Hello again!
Sorry for the delay, I have been away for a while. I've been busy with coursework and exams.
So I finally I got back to work on this issue, repaired my quadrotor & tested it again. This time the issue was resolved and I could…"
Sorry for the delay, I have been away for a while. I've been busy with coursework and exams.
So I finally I got back to work on this issue, repaired my quadrotor & tested it again. This time the issue was resolved and I could…"
"if your problem is vibrations the two imus have to be similar
Are you sure about this?
Mission Planner's Log Analyzer detected this mismatch between the two IMUs & it said check the vibrations & calibration.
But if you're right, all I need to do is…"
Are you sure about this?
Mission Planner's Log Analyzer detected this mismatch between the two IMUs & it said check the vibrations & calibration.
But if you're right, all I need to do is…"
"If it flies well in Stabilize and AltHold, then your basic wiring and dampening would seem to be okay.
Yes it was okay in Stabilize & AltHold, but I almost never tried to go full throttle in those modes. I was thinking that maybe the vibration…"
Yes it was okay in Stabilize & AltHold, but I almost never tried to go full throttle in those modes. I was thinking that maybe the vibration…"
"Yeah you're right. I had indeed tested Stabilize & AltHold as I said earlier, and they were not bad (except that AltHold sometimes behaved strange briefly, nothing serious though).
But I'm a novice with zero experience in piloting, and I was having…"
But I'm a novice with zero experience in piloting, and I was having…"
"I'm thinking of using something similar to the "3D Printed Anti-Vibration Platform" mentioned here, as Fnoop suggested that it has worked better for him and many others. I know that doesn't necessarily mean it's going to work for me. I might try…"
"This is the mounting, under the FC is a thin shock absorbing pad:
And as for the wiring, almost all of the wiring has been done between the top & bottom plates like this:
I am going to make changes in the FC mounting BTW."
And as for the wiring, almost all of the wiring has been done between the top & bottom plates like this:
I am going to make changes in the FC mounting BTW."
"Not sure what you mean by "new", I bought it about 6 months ago from a reseller located in China. And since then, I have flied with it less than 10 times, each shorter than 5 minutes in duration. Why does it matter?"
"A waypoint with a 50 meter radius is a 100 meter diameter sphere. Anywhere inside that sphere satisfies the FC that it has reached that waypoint.
Are you sure that the radius applies to the altitude as well?
Even if it is, this is not the only…"
Are you sure that the radius applies to the altitude as well?
Even if it is, this is not the only…"
"Before you try auto mode, make sure that Stabilise->Alt-Hold->Loiter modes work in that order, so you've done well with the first two. But now make sure Loiter works well, so go from Alt-Hold to Loiter and make sure it sits there quietly, then fly…"
"Have you re-calibrated your accelerometers?
I updated my Copter firmware just the day before the (2nd) crash, so I had re-calibrated everything before the test.
And try different anti-vibration/dampening for the pixhawk, this is a common problem…"
I updated my Copter firmware just the day before the (2nd) crash, so I had re-calibrated everything before the test.
And try different anti-vibration/dampening for the pixhawk, this is a common problem…"
"I have attached the GPS charts.
About the IMU.AccZ, I think the correct value is around -9.8, which is the acceleration of gravity, and negative because it's downward. So the mean value being -9 does not look so bad, does it? An accelerometer…"
About the IMU.AccZ, I think the correct value is around -9.8, which is the acceleration of gravity, and negative because it's downward. So the mean value being -9 does not look so bad, does it? An accelerometer…"
