← All tools

Message & Error Explainer

What an ArduPilot message means and what to do about it

Українська

Plane's in-flight tuning knob changed, saved or reverted a value

InformationAutoTune and controlPlane only

What ArduPilot says:

Plane's in-flight tuning: a knob on channel TUNE_CHAN changes the parameter chosen by TUNE_PARAM as you fly. “started X”: X is now on the knob. “mid-point X” (4.6): the knob crossed its centre and from here it changes the value, between the starting value divided by TUNE_RANGE and multiplied by it. The selector switch (TUNE_SELECTOR) does the rest: held high for under 2 s and released, “recentered X” makes the present value the new centre; for 2 to 5 s, the next parameter; for more than 5 s, “Saved”. “reverted”: the flight mode changed with TUNE_MODE_REVERT set, and the values went back.

Values changed with the knob are lost at the next reboot unless “Tuning: Saved” was shown.

Parameters to look at

ParameterWhat it is
TUNE_PARAMTransmitter tuning parameter or set of parameters
TUNE_CHANTransmitter tuning channel
TUNE_SELECTORTransmitter tuning selector channel
TUNE_RANGETransmitter tuning range
TUNE_MODE_REVERTRevert on mode change
TUNE_CHAN_MINTransmitter tuning channel minimum pwm
TUNE_CHAN_MAXTransmitter tuning channel maximum pwm
The code that sends it

Tuning: reverted

libraries/AP_Tuning/AP_Tuning.cpp AP_Tuning::check_input() · Open in ArduPilot Copter-4.7.1

Tuning: ……N.N

libraries/AP_Tuning/AP_Tuning.cpp AP_Tuning::check_input() · Open in ArduPilot Copter-4.7.1

Tuning: started …

libraries/AP_Tuning/AP_Tuning.cpp AP_Tuning::next_parameter() · Open in ArduPilot Copter-4.7.1

Tuning: Saved

libraries/AP_Tuning/AP_Tuning.cpp AP_Tuning::check_selector_switch() · Open in ArduPilot Copter-4.7.1

And 2 more messages, sent from the same places.

Written here for Plane 4.6. In the tool you choose your vehicle and version, see your own parameter values beside the ones named here, and drop a flight log to have every message in it explained.

Open it in the Message & Error Explainer