In file included from ../../libraries/AP_Mount/SoloGimbal.cpp:5:
../../libraries/AP_Mount/SoloGimbal.h:122:11: warning: private field
'_yaw_rate_ff_ef_filt' is not used [-Wunused-private-field]
float _yaw_rate_ff_ef_filt;
^
../../libraries/AP_Mount/SoloGimbal.h:140:23: warning: private field
'_chan' is not used [-Wunused-private-field]
mavlink_channel_t _chan;
^
2 warnings generated.