Chris Rosser FPV Tune

Check Chris Rosser's Video for more information

Find max D gains

Harmonics Number: 3Min Freqhency: 100Hz

Yes

Low Pass Filter

Enable Expert Mode

Find P:D balance

PID Tuning

Return Stick Response (FF Gains) -> 1.0Gradually increase the Stick Response sliderPay attention for overshoot at the end of sharp 360° flips and rolls

PID toolbox

Poor Mechanical Structure

Receiver

PID Controller Settings

AOS Tune(more aggressive)(less noise 70-170Hz better)

Unleash PID controller

Repeat the previous step for multiple Master Multiplier Slider valuesGradually increase the slider until hot motor / weird motor sound / propwashNaming the log file to corresponding Master Multiplier Slider value

Karate Tune(less aggressive)(more noise 70-170Hz better)

Under damped -> Decrease P&I gainsOver damped -> Increase P&I gains

500Hz Static PT1 on Gyro75->150Hz Dynamic PT1 on D termDynamic Curve Expo 7150Hz Static PT1 on D term

Frame Resonance

Throttle and Motor Settings

Betaflight Blackbox Explorer

set pidsum_limit = 1000set pidsum_limit_yaw = 1000save

Filter Tuning

RPM Crossfading

RPM Filter(BiDir Dshot)

Increase Min Hz until motors sound rough on armingIncrease Max Hz until rough sounding or hot motors when hard flying

Further Tune

No

Get black box data for3 Rolls - 3 Flips - 3 Yaw Spins on both directions with full throttle

Spike <= 100 Hz

Dynamic Notch Filter

High Frequency Noise

RC Smoothing

Frequency vs. Thruttle Specturm

Gyro RPM Filter

Tuning Feedforward

Motor Noise

No Gyro low pass filters80->110Hz Dynamic BIQUAD on D termDynamic Curve Expo 8

CLI

Dynamic Notch

Start

feedforward transition = 0Smoothness = 25Boost = 15font color=\"#323232\

Gradually increase Drift - Wobble (I Gains) sliderI Term Relax - Leave at default in generalReducing cur-off if logs show I term winding up to a large values during fast moves

Frequency Spectrum

Enjoy

set rpm_filter_min_hz = 100set rpm_filter_fade_range_hz = 100save

Tuning I term

Dynamic Damping (D Max) = 0Gradually increase the Master Multiplier slider (0.2 and 30s at time)font color=\"#323232\

Stick Response (FF Gains) = 0Gradually increase Tracking (P&I Gains) slider

Pick the Optimum Master Multiplier Slider value according to Step Response Plots

Make sure build is in representaitve state

Dynamic Idle

Notch Q: 500Notch Count: 1 (#frame resonances)Notch Min Freq: 150Notch Max Freq: 600

Mechanical Check