Since v3.2.3 our Pixhawks are making a doh-re-me sound at rest, there are no warning messages and I can't find any info on what these tones mean? It is intermittent and irregular.
Attached is the sound
Any ideas?
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Hey there! I am getting a do-re-mi sound as well and I don't know what it means (throttle is not coming on as planned as well, but my servos are working decently). I don't understand what all the code is about (is it c++?) but I can't seem to get my plane to arm. Did changing the RC3 settings help at all?
https://www.youtube.com/watch?v=s8qXUC-hfFk
Throttle won't work until you arm the plane. Arming is on by default. Firstly you need to press the safety switch so it stops flashing. Then you usually need to hold right rudder on your TX and you will see on the GCS that it will change from disarmed to armed. Then your throttle should work.
Thanks, Grant.
Right. In the video I posted above, you can see me pressing the switch on top of the aircraft (you can see that it is a solid color, not flashing...), and that allows me to move my servos and should also allow me to move my throttle. That is the say it worked on a previous version of the same airplane. So I held down the safety switch, and that produced the Do-re-mi sound that you hear in the video. I then move the sticks for the servos, and they all move. Only the throttle doesn't work.
OK, so assuming that your directions are correct: After I press the safety button and "arm" the plane (still hearing the do-re-mi sound), I hold right rudder on my transmitter for a few seconds (1-10 seconds), and that will THEN allow me to throttle up and down. Is that correct?
I am asking for clarification because I have never had to "hold right rudder on my transmitter" for the throttle to arm...
In the last release of Plane we made throttle arming default to on. Its in the release notes which can be seen here.
http://diydrones.com/profiles/blogs/apm-plane-3-3-0-released?xg_sou...
Pressing the safety button is the first of 2 steps. The second is now the throttle arming.
Thanks, Grant.
Hi Foxzilla. Your tone I think (hard to tell from the video) is this one:
#define AP_NOTIFY_PX4_TONE_QUIET_POS_FEEDBACK 4
{ "MFT200L4<A#B#", false }
in ToneAlarm_PX4.cpp
You get that sound when RC contact is lost.
Thanks, Grant.
Thanks Grant, much appreciated. Now we know.
Yes we discussed at t
That seems to be the sound the Pixhawk makes when it's happy and "ready to fly." I get that same sound on my copter running 3.3 rc4.
It's not there Tom, you can listen to the sound in my post, not one of the sounds on the wiki page sounds like that. It is definitely not the ESC either, as it comes straight from the Pixhawk. No-one seems to know what that sound means? Hasn't seemed to affect flying though but it is a bit disconcerting without confirmation.
Its this tone:
#define AP_NOTIFY_PX4_TONE_QUIET_READY_OR_FINISHED 7
{ "MFT200L4<G#6A#6B#4", false },
In ToneAlarm_PX4.cpp.
If you have a serial connection to your pixhawk and the "nsh>" prompt you can hear it by typing:
nsh> tone_alarm MFT200L4<G#6A#6B#4
The top of the tone_alarm source code explains what that complicated syntax means
https://github.com/diydrones/PX4Firmware/blob/master/src/drivers/st...
Mike Knott is correct - it means all pre-arm checks have passed and your ready to arm.
You should not be getting it intermittently unless your doing something to trigger it.
Thanks, Grant
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