Ground Station - Pause at Waypoint too long

Dave_EP

Dave_EP

Member
We moved out ground station from the Phantom 2 (where it's worked as expected) to the S900/A2 yesterday and went to test fly today.

The routes are being flown correctly, but the S900 is pausing at "some" (but not all) waypoints for 20-30 seconds whereas the others if may stay for only the programmed 1 / 2 / 3 seconds (as programmed).

All waypoints have been programmed with the same pause amounts so I can't figure out why some would be right and others wrong (20-30 seconds instead of 1-3). If we fly in banked turns there are no pauses.

Also, if it's relevant, the time estimate seems to include these unwanted pauses, so clearly the system thinks it is being told to pause when it isn't.

Any ideas? We never had this problem with the P2.
 




Dave_EP

Dave_EP

Member
I don't think the file was saved. We will run another test tomorrow and I'll make sure the file gets saved. We did two flight tests today, morning and afternoon and it exhibited the same problem, so it will be interesting to see the cause if there is one.
 


Dave_EP

Dave_EP

Member
Here is one sample file from today. Each waypoint paused for approx 30 seconds. Clearly the hold time is 3 not 30. Tried the same file with a hold time of 2, 1 and 0 and it made no difference.

Clearly there's something else in here I'm overlooking.


<?xml version="1.0" encoding="utf-16" standalone="yes"?>
<Mission MissionTimeLmt="65535" IsPatrol="Start_to_End" StartWayPointIndex="0" VerticalSpeedLimit="1.5">
<WayPoint id="0">
<Latitude>53.9879616257326</Latitude>
<Longitude>-1.13943464224919</Longitude>
<Altitude>10</Altitude>
<Speed>2</Speed>
<TimeLimit>36000</TimeLimit>
<YawDegree>360</YawDegree>
<HoldTime>3</HoldTime>
<StartDelay>0</StartDelay>
<Period>0</Period>
<RepeatTime>0</RepeatTime>
<RepeatDistance>0</RepeatDistance>
<TurnMode>StopAndTurn</TurnMode>
</WayPoint>
<WayPoint id="1">
<Latitude>53.9877550862309</Latitude>
<Longitude>-1.13928262786484</Longitude>
<Altitude>10</Altitude>
<Speed>2</Speed>
<TimeLimit>33</TimeLimit>
<YawDegree>360</YawDegree>
<HoldTime>3</HoldTime>
<StartDelay>0</StartDelay>
<Period>0</Period>
<RepeatTime>0</RepeatTime>
<RepeatDistance>0</RepeatDistance>
<TurnMode>StopAndTurn</TurnMode>
</WayPoint>
<WayPoint id="2">
<Latitude>53.9878591802029</Latitude>
<Longitude>-1.1388735030851</Longitude>
<Altitude>10</Altitude>
<Speed>2</Speed>
<TimeLimit>33</TimeLimit>
<YawDegree>360</YawDegree>
<HoldTime>3</HoldTime>
<StartDelay>0</StartDelay>
<Period>0</Period>
<RepeatTime>0</RepeatTime>
<RepeatDistance>0</RepeatDistance>
<TurnMode>StopAndTurn</TurnMode>
</WayPoint>
<WayPoint id="3">
<Latitude>53.9880657197046</Latitude>
<Longitude>-1.13902551746945</Longitude>
<Altitude>10</Altitude>
<Speed>2</Speed>
<TimeLimit>33</TimeLimit>
<YawDegree>360</YawDegree>
<HoldTime>3</HoldTime>
<StartDelay>0</StartDelay>
<Period>0</Period>
<RepeatTime>0</RepeatTime>
<RepeatDistance>0</RepeatDistance>
<TurnMode>StopAndTurn</TurnMode>
</WayPoint>
</Mission>
 

L

leofuica

Member
I sew your file and found this:

TimeLimit>33</TimeLimit> in supouse that is in seconds

Search in your programing device Time Limit and put 0 (cero), i dont know how this number 33 put in there ¿automaticly? ¿manualy?
 

Dave_EP

Dave_EP

Member
The time limit varies based on how fast you set the speed, so I'm thinking this is a time limit set for the aircraft to get to the way point, rather than how long it's supposed to stay there.

The hold time is how long it's supposed to hold.

The same file flies the Phantom 2 perfectly (3 seconds hold time), so I'm thinking there's something else going on here.
 


Dave_EP

Dave_EP

Member
Latest DJI Ground Station software on Windows 7.

The same software worked perfectly with the P2 and the very same ground station parts. All we did was move the aircraft module from the P2 to the S900.
 

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