Ardupilot 2.5.4 flight mode position problems

Hey guys,

 

With a lot of help from Chris I was able to get Ardupilot 2.5.4 loaded onto my board today.

 

Once loaded, I came accross my next 2 issues.

 

Issue 1:

The flight modes.  I wanted to test if changing the all the  flight mode descriptions in the header file to "manual" that it would indeed give me manual control over over the plane in each mode. However, with all three modes set to manual, I was only able to control the plane in manual position 1. I had no control over the plane in positions 2 and 3.

 

Issue 2:

Random flight changes. Regardless of what flight modes are set to positions 2 and 3 (position 1 was kept as manual) there is random flight mode changes when the transmitter is set to position 2 (red mux light on and green mode light on).

 

I hooked the FTDI cable up and watched the incoming data on hyperterminal, take a look at what was happening on the attached file.

 

Jeff

Tags: 2.5.4, ardupilot, flight, hyperterminal, mode, position

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Replies to This Discussion

Permalink Reply by Jeff on April 7, 2010 at 3:31pm
Be sure to save the file and then open it with wordpad... otherwise it won't make any sense!!

ModeratorPermalink Reply by Chris Anderson on April 7, 2010 at 3:37pm
What RC system are you using?

Do the MUX LEDs respond to the toggle as you would expect?
Permalink Reply by Jeff on April 7, 2010 at 3:44pm
RC system is spektrum DX7 and AR7000.

Yes the MUX LEDs respond as you would expect, HOWEVER, in position 2 (green mode light on and red MUX light on) the green light sometimes flashes slightly and does not stay solid.

ModeratorPermalink Reply by Chris Anderson on April 7, 2010 at 4:08pm
Sounds like you need to adjust the settings on your mode switch at the Tx to bring the middle position into the normal range. I don't have a Spektrum, but I imagine your manual can tell you how to do that. Other people with Spektrums have not reported this prob...
Permalink Reply by Jeff on April 13, 2010 at 7:57am
Hey Chris,

An update on this problem: It turns out that the way my transmitter was programmed, it wasn't exactly proportional for the 3 mode settings (the middle and full positions were slightly closer together). However, the transmitter worked just fine when using Ardupilot 2.4.

When I uploaded 2.5 I assumed (my mistake) that the same mixing values woould work, however it turns out the points at which the modes change must be slightly different in the 2.5?

In any case, thanks for the help Chris, your advice has once again helped me move forward with my project!
Permalink Reply by Jeff on April 13, 2010 at 8:48am
Another unrelated question:

In version 2.5.4, in autopilot mode, does "home" count as a waypoint? ie will the plane have to go to its home position each time autopilot is engaged, or does it start right away toward the programmed waypoint 1?

ModeratorPermalink Reply by Chris Anderson on April 13, 2010 at 9:25am
It starts with waypoint 1. Home is not a waypoint, but rather where it goes when it's finished with its waypoints.
Permalink Reply by Jeff on April 13, 2010 at 9:29am
Thanks Chris,

How does setting home position work with the 2.5.4?

Can I still use the bind plug / set home position?

When I move the home position on the config tool for testing purposes and write it to the board, it is in a different place when I read the board a few minutes later?

Is this info documented somewhere?

ModeratorPermalink Reply by Chris Anderson on April 13, 2010 at 9:26am
That's actually determined by the code running on the Attiny processor in the MUX, so it has nothing to do with the ArduPilot code versions. I suspect it wasn't working reliably in 2.4 either, but you just didn't notice. Anyway, glad you got it sorted out and thanks for the update!
Permalink Reply by Jeff on April 13, 2010 at 9:46am
Aw, okay I found this section in field calibration of the new manual. (to my question above)

So if I am using 2.5.4, the only way to set home is to power the system on and it does it automatically after getting lock?

ModeratorPermalink Reply by Chris Anderson on April 13, 2010 at 9:59am
No, you can also do it manually in the configuration utility. Also in the manual.
Permalink Reply by Jeff on April 13, 2010 at 10:39am
I opened the configuration utility, moved the home position and waypoints, pressed "write" and it said "write successful"

Then I closed config utility, and reopened it, pressed "read", and the home icon was not changed, only the waypoints

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