About

Gender

Male


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

Alireza Manzoori replied to Alireza Manzoori's discussion Forwarding telemetry data (NOT the MAVLink stream!) from Mission Planner or other GCS
"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!"
Dec 27, 2018
Alireza Manzoori posted a discussion
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…
Aug 13, 2016
Alireza Manzoori replied to Wilhelm Matilainen's discussion Getting Pixhawk to work with Emax
"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…"
Aug 5, 2016
Alireza Manzoori replied to Alireza Manzoori's discussion How to log filtered acceleration data & angular velocities (from EKF) for offline analysis?
"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…"
May 14, 2016
Alireza Manzoori posted a discussion
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…
May 13, 2016
Alireza Manzoori replied to Alireza Manzoori's discussion Uncontrolled Climbing (& CTUN.DAlt increase) in AUTO Mode, Keeps Climbing Even After Switching to LAND!
"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…"
May 13, 2016
Alireza Manzoori replied to Alireza Manzoori's discussion Uncontrolled Climbing (& CTUN.DAlt increase) in AUTO Mode, Keeps Climbing Even After Switching to LAND!
"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…"
Mar 12, 2016
Alireza Manzoori replied to Alireza Manzoori's discussion Uncontrolled Climbing (& CTUN.DAlt increase) in AUTO Mode, Keeps Climbing Even After Switching to LAND!
"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…"
Mar 12, 2016
Alireza Manzoori replied to Alireza Manzoori's discussion Uncontrolled Climbing (& CTUN.DAlt increase) in AUTO Mode, Keeps Climbing Even After Switching to LAND!
"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…"
Mar 12, 2016
Alireza Manzoori replied to Alireza Manzoori's discussion Uncontrolled Climbing (& CTUN.DAlt increase) in AUTO Mode, Keeps Climbing Even After Switching to LAND!
"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…"
Mar 12, 2016
Alireza Manzoori replied to Alireza Manzoori's discussion Uncontrolled Climbing (& CTUN.DAlt increase) in AUTO Mode, Keeps Climbing Even After Switching to LAND!
"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."
Mar 11, 2016
Alireza Manzoori replied to Alireza Manzoori's discussion Uncontrolled Climbing (& CTUN.DAlt increase) in AUTO Mode, Keeps Climbing Even After Switching to LAND!
"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?"
Mar 11, 2016
Alireza Manzoori replied to Alireza Manzoori's discussion Uncontrolled Climbing (& CTUN.DAlt increase) in AUTO Mode, Keeps Climbing Even After Switching to LAND!
"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…"
Mar 11, 2016
Alireza Manzoori replied to Alireza Manzoori's discussion Uncontrolled Climbing (& CTUN.DAlt increase) in AUTO Mode, Keeps Climbing Even After Switching to LAND!
"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…"
Mar 11, 2016
Alireza Manzoori replied to Alireza Manzoori's discussion Uncontrolled Climbing (& CTUN.DAlt increase) in AUTO Mode, Keeps Climbing Even After Switching to LAND!
"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…"
Mar 11, 2016
Alireza Manzoori replied to Alireza Manzoori's discussion Uncontrolled Climbing (& CTUN.DAlt increase) in AUTO Mode, Keeps Climbing Even After Switching to LAND!
"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…"
Mar 10, 2016
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