whizpop

proper use of FRAME_HEADING_ANGLE
Garug, I have not found analog encoders that have a pass-through which is needed for our design... The documentation indicates that this value can be set by manual to identify a static frame azimuth. Alex, Is FRAME_HEADING_ANGLE implemented per th…

Comment by whizpop March 2016 permalink
Potentiometer for Yaw
I have atm203 encoders but I cannot add to only the yaw, it requires all or none, that adds $150+$40 to the cost of the device which is too much. having the ability to add an analog encoder to yaw in the base software would be ideal. I'm going…

Comment by whizpop July 2015 permalink
Potentiometer for Yaw
so, If I add a yaw potentiometer and programmatically move the gimbal (via api) the change in yaw position will cause the potentiometer to provide input to the rc channels thus correcting the movement back to zero. that does not sound like it will …

Comment by whizpop July 2015 permalink
Potentiometer for Yaw
this sounds like a good fix for follow mode stability BUT, will using a yaw potentiometer help prevent yaw drift when not in follow mode?

Comment by whizpop July 2015 permalink
CMD_READ_PARAMS_EXT and offset values using v2.55b api?
Alex or Garug?

Comment by whizpop June 2015 permalink
CMD_READ_PARAMS_EXT and offset values using v2.55b api?
this is the discrepancy I see in the returned data. below I have mapped (based on documented data types) of returned values. there is a gap in the middle of the returned values that contains undefined bytes of data... any insight would be helpful. t…

Comment by whizpop June 2015 permalink
Patents and Licensing
That was my thought, after re-reading the claims several times, it sounds like it is fundamentally describing the "Rotatably coupled 3-Axis" design of a stabilized gimbal. including sensors to calculate angle, very abstract. "a firs…

Comment by whizpop June 2015 permalink
Magnetometer tuning, results
solved by moved the magnetometer, running in upside-down mode (as my device does) placed the sensor to close to the yaw motor.

Comment by whizpop May 2015 permalink
Magnetometer tuning, results
turning follow mode on did not have any effect. one thing I notice in follow mode, the first time I send a cmd set angle, follow does not work. I think the api overrides follow mode.

Comment by whizpop May 2015 permalink
Magnetometer tuning, results
can voltage compensation cause fluxuation in motor current impacting magnetic interference? I would think that would be a more linear distortion pattern if that were the case.

Comment by whizpop May 2015 permalink
Magnetometer tuning, results
I plan to try recalibrating the magnetometer at the location and setting the mag-declination(not sure if this will make a difference). edit: recalibrated and dropped mag_trust to 75 with similar results to the first video. fyi, found a easy site t…

Comment by whizpop May 2015 permalink
Magnetometer tuning, results
note: in both videos the yaw movement is the only axis that is not moving correctly. pitch and roll movements are as planned is it possible that it may be necessary to calibrate the magnetometer at each location prior to a long shoot?

Comment by whizpop May 2015 permalink
Magnetometer tuning, results
its a multi-function gimbal, it is setup in non-follow mode for this type of shooting. do you think this could be related to the magnetometer calibration? or the way that it integrates the mag trust into the position? after all, it is a beta featur…

Comment by whizpop May 2015 permalink
Magnetometer Trust
another question, how does Mag trust play in with gyro trust? for example, if im using my gimbal in a context that is beneficial to have magnetometor to prevent drift, (lets say for timelapse movements) and my gimbal is tuned to trust mag=100, what …

Comment by whizpop April 2015 permalink
Magnetometer Trust
btw, I use fast I2C, (my gimbal seems to perform better) my IMU wires are all shielded, I have no I2C errors. The magnetometer seems to support the high speed I2C. however, I did notice the magnetometer error level would slowly rise when gimbal is …

Comment by whizpop April 2015 permalink
Magnetometer Trust
great, thank you! are those api changes in FW v3.0b4?

Comment by whizpop April 2015 permalink
Potentiometer for Yaw
does anyone have any links to demonstrate how I can add a magnetic yaw potentiometer? not a lot of info on that. thanks,David

Comment by whizpop April 2015 permalink
cause of very slow yaw drift?
thank you for the Magnetometer feature, I am waiting for my chips to arrive... this sounds like it will resolve the inherent gyro drift issue for my primary usage scenario.

Comment by whizpop April 2015 permalink
roll & pitch follow is inverted when in upside-down mode
you were right! pitch needed to be set to inverted. when performing motor auto process in the past I have had ambiguous results, in which one time pitch was set as inverted and the next time it was not. needless to say, I have tuned the gimbal wit…

Comment by whizpop April 2015 permalink
roll & pitch follow is inverted when in upside-down mode
thats odd, everything else works properly... if the pitch motor was incorrectly inverted would that not cause problems with stabilization?

Comment by whizpop April 2015 permalink
roll & pitch follow is inverted when in upside-down mode
I cant think of anything else to try... in both normal and upside-down mode the pitch follow is inverted, meaning when i tilt up it pitches down and when i tilt down it pitches up. if I tilt too hard it pitches a full 90 degrees and goes into lock …

Comment by whizpop April 2015 permalink
roll & pitch follow is inverted when in upside-down mode
any ideas to try on this ?

Comment by whizpop April 2015 permalink
motor heat vs power settings
ok, will look into upgrading a motor.

Comment by whizpop April 2015 permalink
roll & pitch follow is inverted when in upside-down mode
yes, I was referring to the FW version 2.50r3 and I have the auto upside down enabled in advanced tab. I have not tried to associate upside-down mode with button, because I do not have easy access to the button when using the gimbal. I just saw tha…

Comment by whizpop April 2015 permalink
roll & pitch follow is inverted when in upside-down mode
it seems to be mostly the pitch that is affected. I have a frame imu (above yaw) I am using the Follow PITCH,ROLL follow mode @ 15deg for both. estimate frame angles from motors is disabled.

Comment by whizpop April 2015 permalink
roll & pitch follow is inverted when in upside-down mode
powering up the device with the frame inverted and camera not inverted. using r3

Comment by whizpop April 2015 permalink
cause of very slow yaw drift?
ok, thank you. I did a couple "rock-steady" gyro calibrations and it significantly reduced the drift I was seeing. things are looking much better. after a firmware upgrade I lost my accelerometer calibrations, so im not sure why it is wor…

Comment by whizpop April 2015 permalink
cause of very slow yaw drift?
is gyro temperature calibration stored uniquely for frame and camera IMU? Meaning that, if during usage, if the camera IMU is in the shade and the Frame IMU is in the sun and the frame IMU heats but the Camera IMU does not, will it compensate for t…

Comment by whizpop April 2015 permalink
self excitation on api moves?
it seems like this was the cause of the issue, I will be performing several more tests to confirm. thanks for your feedback and ideas Garug

Comment by whizpop April 2015 permalink
self excitation on api moves?
I think I found a flaw (unsure if its in my logic or BGC) my timelapse logic allows you to move the gimbal to a start-point, then to and end-point. I retrieve angles from the controller at both points. when performing the timelapse I interpolate (tw…

Comment by whizpop April 2015 permalink

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Username: whizpop
Joined: December 2014
Visits: 24
Last Active: May 2021
Roles: Member