Replies to This Discussion

Permalink Reply by Dave on May 3, 2012 at 6:16pm

Have you tried trimming the throttle down a little?

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Permalink Reply by Andrew Adams on May 3, 2012 at 6:58pm

Havent tried that. I did set the mix for the channel to -125% I'll give the trimming down a shot and see.

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Permalink Reply by Andrew Adams on May 4, 2012 at 3:20pm

Tried trimming down the throttle...no dice. Not sure where to go from here. May try to reload the firmware and see what that gets me.

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Permalink Reply by Chris Huitema on May 4, 2012 at 3:46pm

I have seen a fix for this problem before... cant remember where! may have been on the er9x wiki page. It is a common problem tho.

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Permalink Reply by Gordon on May 4, 2012 at 4:46pm

Flashing to ER9x swaps the roll and yaw channels, so the reason you can't arm is because the APM is seeing full right aileron instead of rudder. You probably missed this during calibration because you just run both sticks in circles at the same time, that's how I normally do it.

There are 2 fixes.

1) swap the roll and yaw inputs to the APM; or

2) re-assign the channels in ER9x.

Check out this thread where we discovered the problem.

http://diydrones.com/forum/topics/roll-and-yaw-swapped-after-flashi...

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Permalink Reply by Andrew Adams on May 4, 2012 at 6:42pm

Strange. I have it set up correctly for my planes but not the copter. Regardless, just set it to AETR and didn't work. I'm half asleep tho so I'll try again in the morning. Thanks for the link! Ill read it all when I'm not going in and out of sleep. :)

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Permalink Reply by Chris Huitema on May 5, 2012 at 9:10pm

seems like everyone has the same problems at the same time!

 

http://diydrones.com/forum/topics/roll-and-yaw-swapped-after-flashi...

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Permalink Reply by Andrew Adams on May 6, 2012 at 10:57am

I can arm it now, but since I'm upgraded to the newest firmware, the ESCs continually beep. I've calibrated correctly. But as soon as I finish the calibration and unplug/plug in the battery to try a flight, they just beep non stop.

I can arm the board now though....

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Permalink Reply by Vernon Barry on May 6, 2012 at 12:07pm

Right, and they beep because they aren't getting ANY PWM signal. not a wrong PWM signal, just flat out no PWM signal.

There are 3 causes for this:

Bad wiring (Likely not the cause if it previously worked)

Bad code (not likely since mission planner connected and you did some calibration).

APM not booting from ESC/BEC power (most likely candidate since the latest code seems to have a bug which requires you to press reset on the APM after plugging in the battery).

 

Again, this is a KNOWN bug with the latest firmware that it always requires pressing reset on the APM after plugging in the battery. Hopefully it will get fixed in a future release.

 

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Permalink Reply by Andrew Adams on May 6, 2012 at 1:00pm

So I agree that it isn't the code or wiring.

Just to make sure I did everything right, I calibrated the ESCs and verified this. Now I plug the battery in and sure enough they beep non stop. I hit the reset button as you mentioned and the board resets, but the ESCs continue to beep. Do I just need to hit the reset button and it should correct the problem?

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Permalink Reply by Vernon Barry on May 6, 2012 at 2:44pm

So what are the LEDS on the APM doing? This would tell us if the APM booted.

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Permalink Reply by Andrew Adams on May 6, 2012 at 3:05pm

They do the normal startup blinking. I can then "arm" the board and the green led goes solid.  The board seems to act normal when booting... I'll try to get a quick video and post back shortly. 

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