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91
Vehicles - Ground / Re: Advice on TPS (Thrust PID Scaling) for Yaw on boat
« Last post by karla on November 23, 2018, 08:09:49 am »
Haha cool  :D
I don't even know what that HorizontalPosP does?
At the moment its set at 0.2 (m/s)/m  :P


For your question: It needs two batteries to work at all.
I have 2 LiPo's 3s 5500 mAh each, connected in series so its 6S actually.
The Amp meter is not good at all, it shows far too much AMPs are used than in reality. The Volts meter is accurate though.
I think it can run some 5-10 runs (around the 8 wp's track), at least on one charge.
92
Vehicles - Ground / Re: Advice on TPS (Thrust PID Scaling) for Yaw on boat
« Last post by TheOtherCliff on November 23, 2018, 07:06:22 am »
Not a big deal, but it looks like there is still a small horizontal oscillation on straight lines between waypoints.  Period looks like about 10+ seconds.

I would try reducing GroundPathFollowerSettings.HorizontalPosP

How far how long can it go on one battery?
93
Vehicles - Ground / Re: Advice on TPS (Thrust PID Scaling) for Yaw on boat
« Last post by karla on November 23, 2018, 05:59:20 am »
Yes! This works much better now!

There is nothing wrong with the GroundPathFollower. It's doing a good job.
Now pretty straight smack on to all the waypoints, no extra circles :)



I saved the settings to UAV file, upgraded to latest Next r735, imported the UAV file again without any warnings.
Only did a magnetometer calibration, but this time more careful to do it  after all LiPos, servo and ESC wires was fixed in place and the FPV cam and VTX turned on. Mag stayed solid green the whole time.
Also upgraded my 1/4 dipole to a full 1/2 wave length dipole, so this time stayed connected all the way.



I will update the post over at the show room to reflect the new situation.
https://forum.librepilot.org/index.php?topic=4483.0

Thanks a lot!

94
GCS General / Re: Magnetometer fails on calibration
« Last post by TheOtherCliff on November 23, 2018, 05:12:26 am »
Magnets close to the sensors.  There are magnets in LiPo alarms, in the speakers (speakers not piezo).

A lot of metal in the area.

A lot of AC power close by.

Really should be done outdoors.

Once calibrations starts, it constantly gathers data, not just when you press the button 6 times.  You must not set it on the ground between presses.  You must not set it on a car between presses.

Maybe waiting too long between presses and generally taking too long.  I am not sure If this is actually a problem.

Incorrect motions or motions too fast.  Motions are not critical and very hard to make it too fast to pass.  Hard to make this a problem at all.

Are you following the instructions or are you trying to do a different mag dance?
95
GCS General / Magnetometer fails on calibration
« Last post by Anonator on November 23, 2018, 01:00:26 am »
Using next version I get error calibrating magnetometer with a Revo onboard mag. Tried with aux mag (DJI GPS/Compass)... also failed.  What can cause an error to calibrate?
96
Applications - FPV / Re: Problem with CC3D
« Last post by chririva on November 21, 2018, 10:45:46 am »
Thank you so much for your answer.

MY GOD, I spent hours to fix this issue. The probem in my case was the cable! Because I used a cable that was used as supply, there are no wires for data inside. I just tried with another and everything was perfect.
I spent hours because of this  :'( :'(
97
Vehicles - Ground / Re: Advice on TPS (Thrust PID Scaling) for Yaw on boat
« Last post by karla on November 21, 2018, 10:32:39 am »
Thanks a lot for all these ideas Cliff
This is soo much fun :)
I think I will do some changes to settings, upgrade to latest version of LP next and then re-run the exact waipoints to compare.
Anyway, it will take a little while, but thanks a lot!
best
K
98
Vehicles - Ground / Re: Advice on TPS (Thrust PID Scaling) for Yaw on boat
« Last post by TheOtherCliff on November 21, 2018, 07:14:41 am »
ALtitude shouldn't affect it, but that is not saying much considering how little the ground path follower is probably used.

I do see at least one other loop in another leg, and it is a loop in the other direction.

Another thing that would cause it is vibration.  Have you checked your accel scope for high G vibrations?  When there is a problem, you can sometimes also see the gyro scopes reporting large motions that do not exist.  Of course when vibration is a problem, it is usually the gyros affected, and that fits the problem.

Ideally you would have no vibration G's.  When balancing quad props, I recall that it could still fly at 5 G's vibration, but it would not fly at 10 G's.  I don't recall if that was a Revo or a Sparky2, but probably a Sparky2.

I don't think that the boat smacking the water at high speed would be enough G's to cause a problem.

This is a lake without significant current in the water, right?  Wind could do the same thing.  Waves from big boat wakes.  That shouldn't cause a loop, but just throwing the idea out there.

Does the boat do anything funny when driving it manually at that speed?  Like an uncommanded turn when it hits a wave at high speed?  Regular waves ... regular loops.

I notice it does not seem to maintain a very tight course.  It is not as straight and on the exact path as it should be.  I would guess that running 5 laps of a small course would show that it varies randomly.
99
Vehicles - Ground / Re: Advice on TPS (Thrust PID Scaling) for Yaw on boat
« Last post by karla on November 21, 2018, 06:26:02 am »
Mag health is really good.
Calibration done fine in same area and okay.



But, how about this.
I checked my pathplanner waypoint file and the only difference with wp8 from the other 7 is that its located 15meters up.



100
General Discussion / Re: Can't connect Revo/OpLink on 2016 MacBook Pro
« Last post by TheOtherCliff on November 20, 2018, 07:05:55 pm »
Has your board ever worked?  Has your computer ever worked to connect to board?

Be aware that the GCS version must match the board firmware version to connect.
https://forum.librepilot.org/index.php?topic=4489.0

Do the LED lights on the board come on and blink?

First suggestions are usually to try a different USB cable, computer, or FC to find out what works.
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