Vbar NEO check aileron sensor out of range

Hi. I attach a logfile of one of my NEOs. Is possible to check if there is nothing weird? I had 2 crashes with that one where the heli did what it wanted a few seconds after take off with the bank 3 loaded. The ESC is working okay in another heli, motor, batteries. The only thing left is the neo, servos and wiring
Regards

Hi,

can you please explain in more detail?

I can see two segments with 'sensor out of range', which is usually evidence for a shock impact, from a hard (auto) landing to a crash, or when the unit is handled outside the model, on the ground, and moved swiftly.

Quote:

log
[...]
OK 2:05 Good Health Message (10sec)
Info 2:09 Governor Mode Pitch
Info 2:09 Motor Switch operated to ON
-> ON

OK 2:19 Good Health Message (10sec)
Info 2:20 Bank 2 Loaded
-> spoolup, bank 2, takeoff?

Info 2:23 Raised Vibration Level

Warn 2:25 The Cyclic Ring is active
Critical 2:25 Aileron Sensor Value out of Range
Critical 2:25 Elevator Sensor Value out of Range
-> VBar has to output full servo-deflection to try and maintain while the model hits the ground

Info 2:26 Bank 4 Loaded
Critical 2:26 Aileron Sensor Value out of Range
Critical 2:26 Elevator Sensor Value out of Range
Info 2:26 Governor OFF
Info 2:26 Governor Mode Stop
Info 2:26 Motor Switch operated to OFF
-> motor off only now

Info 2:26 Motor Switch operated to Idle bailout
Critical 2:32 Extreme Vibration Level
OK 2:42 Good Health Message (10sec)
Info 2:44 Bank 1 Loaded
OK 2:54 Good Health Message (10sec)
-> aftermath
[...]

Quote:

log

OK 0:00 Reset Reason: Power On
Info 0:00 Bank 4 Loaded
Info 0:00 Motor Switch operated to OFF
Info 0:00 Motor Switch operated to Idle bailout
Info 0:01 Bank 1 Loaded
Info 0:05 Calibration Finished
Info 0:14 Raised Vibration Level
Critical 0:14 Elevator Sensor Value out of Range
-> handling on the ground? Motor doesn't seem to be running yet.

Critical 0:23 Extreme Vibration Level
OK 0:33 Good Health Message (10sec)
OK 0:43 Good Health Message (10sec)
Info 0:47 Motor Switch operated to Idle bailout
Info 0:48 Bank 1 Loaded
Info 0:48 Bank 4 Loaded
Info 0:48 Governor Mode Pitch
Info 0:48 Motor Switch operated to ON
Info 0:51 Raised Vibration Level
Info 0:54 Bank 4 Loaded
Info 0:54 Governor OFF
Info 0:54 Governor Mode Stop
Info 0:54 Motor Switch operated to OFF
Info 0:54 Motor Switch operated to Idle bailout
-> on-off-on-off, test on the ground?

OK 1:04 Good Health Message (10sec)
OK 1:14 Good Health Message (10sec)
Critical 1:24 Aileron Sensor Value out of Range
Info 1:25 Bank 1 Loaded
Critical 1:25 Aileron Sensor Value out of Range
Critical 1:25 Elevator Sensor Value out of Range
-> handling on the ground, motor doesn't seem to be running?

Info 1:25 Governor Mode Pitch
Info 1:25 Motor Switch operated to Idle bailout
Info 1:25 Motor Switch operated to ON
Critical 1:26 Aileron Sensor Value out of Range
Critical 1:26 Elevator Sensor Value out of Range
Critical 1:28 Extreme Vibration Level
Info 1:32 Bank 4 Loaded
Info 1:32 Governor OFF
-> model seems to be acting up during spool up?

Info 1:32 Motor Switch operated to OFF
OK 1:42 Good Health Message (10sec)
Critical 1:44 Elevator Sensor Value out of Range
Warn 1:46 High Vibration Level
Warn 1:49 The Cyclic Ring is active
Warn 1:50 The Cyclic Ring is active
-> handling on the ground?
[...]

By my interpretation, only the first segment shows a flight with crash, and there's nothing in it which can help deducing the reason, sorry.
Vibration levels seem to be normal, safe.

I guess the best thing you can do is, do a test run on the ground, no blades, put the mechanics through it's rpm range, move the servos all the way cyclic and collective, and try and force-hold the servo arms/swash plate links/swash plate ball joints to see if one of the servos maybe looses force at some point, or if the gears jump. Wiggle connectors and wires etc., of course check connectors and wires, maybe also remove the bottom plate of the servos carefully and peek inside if the wiring and soldering joints are still OK, inside.

If we had extrem vibration entries and sensor out of range in flight, it could be evidence for vibration, or for the mainboard coming loose, e.g. if the case would pop open in flight, or in case the NEO came loose in flight. The first, the logs seem to tell a different story, the latter, I guess you'd know.

Of course, make sure control directions and stabilization work the right way, and that the VBar really stabilizes, not that we have a sensor stuck at center, going through initialization just fine but not reacting to motion.

Also make sure all servos work after power on. In the past there were reports where servos didn't initialize properly, for whatever reason. If unplugged and plugged in hot, they worked, which is very much evidence that the VBar is outputting what it's supposed to, just the servo wasn't reacting to it at the first power on. E.g. only 2 out of 3 servos working would not really help the cause ...

If in doubt, you can of course send this unit in for inspection, or retire it and use a different/new one.

Kind regards

Eddi

Born to fly ...
forced to work.