I could make Yaw, Roll and Pitch smoother by selecting Input Curve Expo, first I chose value 100, but that made Yaw, Roll and Pitch very slow, so adjusted to 75 and now it works perfect
Dont put expo in the RC transmitter. You would change these parameters:
ATC_INPUT_TC -> increase to 0.2 to 0.3
ATC_ACCEL_P_MAX -
ATC_ACCEL_R_MAX —> decrease these to about 80% of whatever they are now
ATC_ACCEL_Y_MAX -
Experiment with these and see what works best for you. ATC_INPUT_TC is the easiest and safest to change. You can even put it on a knob on your transmitter:
TUNE,45
TUNE_MAX,0.15
TUNE_MIN,0.3
and assign the knob to channel 6, make sure nothing else is using channel 6.
Having said that, we do usually put a bit of expo on our yaw channel in the transmitter - this makes it easy to yaw in very small amounts.