Replies to This Discussion

DeveloperPermalink Reply by Michael Oborne on May 30, 2012 at 3:00pm

what board type do you have?

apm1 1280

or apm1 2560

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Permalink Reply by Mahesh M on May 30, 2012 at 6:24pm

Thanks for the reply.

I use APM1 with 2560

Found the same problem listed on another thread:

http://diydrones.com/forum/topics/hud-stuck-on-arduplane-apm1

The problem in brief:

-  MissionPlanner-1.1.87 with APM1 + ArduPlane-2.34 = No HUD (Attitude Indicator)

-  MissionPlanner-1.1.87 with APM1 + ArduCopter-2.5.4 = HUD Ok

Wondering if there is a difference between ArduCopter and ArduPlane in the way the data from the APM1 is routed over the USB COM port to the Mission Planner.

Or If there are any conditions MissionPlanner checks before it displays attitude. And these conditions are met by ArduCopter but not ArduPlane?

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Permalink Reply by Peter Wlodarczyk on May 31, 2012 at 4:46am

Hi Mahesh,

I had the same problem until I discovered it's not a real problem, just different behaviour between Arducopter and Arduplane.

When connecting via the USB port with the Arducopter application, the real time streams will be enabled. With Arduplane it appears that the real time streams are only enabled on the Xbee port when the switch on the side is in the away from edge position. If you hook up an OSD or use an Xbee everything should work ok for you.

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Permalink Reply by Mahesh M on May 31, 2012 at 10:20am

Hi Peter !!!

Problem Solved !!! Your suggestion was of great help !!! I can now proceed with my plans !!!

I do not have Xbee or an OSD. As you suggested I flipped the switch to "fly" position (away from the edge, toward the GPS connector). I connected APM1 hardware to APM Planner the HUD indicates motion as I move the hardware !!!

Thanks again !!!

Mahesh M.

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3D RoboticsPermalink Reply by Chris Anderson on May 31, 2012 at 10:48am

Interesting. I thought we had disabled that slider switch by default in 2.34. I'll check with the team to find out what's going on. 

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Permalink Reply by Mahesh M on June 19, 2012 at 12:11pm

Hi,

I am facing the same problem again ... just when I thought that it was solved !

I was using the pre-compiled ArduPlane-2.34 binaries through APM Planner for the hardware checks as well as for HIL simulation. The HIL works very well with the autopilot flying the aircraft through the waypoints that I defined. After this success I was integrating the setup with the plane. That's when I started facing the problem again.

After the recent upgrade APM Planner now downloads the 2.40 binary and not the 2.34.

With ArduPlane-2.40 my HUD/Attitude indicator is not working irrespective of whether the switch is in Fly / CLI position. I can connect to the hardware via MAVLink 1.0 (USB). I can also perform "test imu" with the results same as what I described earlier. But there is no attitude indication.

I also tried connected to the APM1 hardware using 3DR radio. Connection was ok. Again no attitude indication. Switch was in "Fly" position.

Since the 2.34 binary is not downloaded by APM Planner now, I compiled and loaded the 2.34 code using Arduino-022. I was surprised to see:

a. In "Fly" switch position I am not able to connect to APM1 ... says serial link slow.

b. In "Fly" switch position - I am not able to connect even using 3DR radio.

c. In "CLI" switch position - connection ok - no attitude indication.

d. The 2.34 code compiled in HIL mode works fine.

I again tested with ArduCopter-2.6. The attitude indication works fine. So I think there is no problem with the hardware.

Any ideas? Please help me resolve this problem. Wish to get the autopilot in air asap !!!

Thanks,

Mahesh M.

 

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