First i say hello because I am a new member. (sorry for my English. I am Spanish speaking)
Hi, I have a x8 wing with px4 autopilot.
I use that with Mision Planner, and when i try to charge a flight plan with 170 waypoint or more, my system does not work.
specifically, if interrogated px4 having sent over 170 waypoint, do not return anything.
How waipoints has at most?
It is a problem of firmware or software?
Thanks

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The number of waypoints on APM is limited to about 140, I gather due to limits with the EEPROM memory, so I suppose because PX4 shares the arduplane software then this limit also applies to it.

Maybe a developer might comment in case I have got this wrong.

If you are using waypoints to trigger your camera you can take advantage of the new camera trigger by distance function which does not use up any of our valuable waypoints :)

Thanks Martin,
I wait for a developer to confirm this.
This issue is very important for me to plan my mission

Hi Martin,

Currently it is limited to 127. I plan on increasing this a lot on PX4 soon, but haven't done it yet.

Cheers, Tridge

Thanks Andrew

Cheers, Martin

Anything changed here? I still can't seem to write more than about 150 waypoints...  I'm using the Pixhawk -- plenty of memory, right?

The limit is now a bit over 700 (in fact 724 for plane/rover and 718 for copter)

That will only apply to copter once 3.2 is out though. You could try a beta version if you need more now.

Cheers, Tridge

Thanks, Tridge. That's great news. I understand that was added in 3.1 plane, right? I'll upgrade if so.

If it's not too hard to explain, why the 'odd' limits?  Will the number eventually grow significantly greater for big mapping missions, or have we reached some memory barrier?

If it's not too hard to explain, why the 'odd' limits?  Will the number eventually grow significantly greater for big mapping missions, or have we reached some memory barrier?

It's the number of bytes available in the 16k FRAM of the Pixhawk for missions. See this code:

https://github.com/diydrones/ardupilot/blob/master/libraries/Storag...

we may support having mission items on the microSD card in future, in which case you would be able to go much larger, but for now that is all we can do.

Cheers, Tridge

Hi 

According to the information I have, the Pixhawk should be able to store 718 waypoints. We have tried this today, but it don't' work. Is there a special setting I need to change for the 718 waypoints?

The Pixhawk runs the firmware 3.2.1

Thanks a lot

Michael

How did you try it? What error did you receive? Do you have a tlog?

It may be that not all ground stations have sufficiently long mission upload timeouts to support large numbers of waypoints.

Cheers, Tridge

I create a mission with over 300 waypoints. I sent the mission to the pixhawk. No failure message. Then I read the mission back to the mission planner. But only 90 waypoints came back... It's strange sometimes 200 waypoints come back, sometimes it's 120 and I don't have any clue why...

The mission planner runs with the newest software update. 

Thanks for your support

Michael

sounds like it may be a MissionPlanner bug.

Can you open an issue?

Cheers, Tridge

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