Set its internal anti-wobble just below the point where it buzzes.
OpenDrift Open Beta tuning guide
Tune the car.
Then tune the gyro.
A practical setup order built from real track testing. Start simple, change one setting at a time, and only add assistance after the car catches and transitions cleanly.
01 · Before touching gain
Build a mechanical baseline.
The gyro cannot repair an unstable chassis, a buzzing servo, steering bind, or hidden receiver stabilization. Those problems become control-loop problems as soon as gain is added.
Disable TSM, AVC, or any other built-in stability assistance.
Check endpoints at full lock and make sure nothing binds or hits the arms.
Confirm toe, camber, ride height, rake, damping, and tire condition.
Position the servo at safe full left, center, and safe full right on the dedicated Physical Endpoints page. All three red targets must turn green.
With wheels clear, rotate the chassis. Correction must oppose that rotation.
Do not skip the direction test.If correction assists rotation, reverse the gyro before putting the car on the ground.
CRSF physical endpoints are synchronized.Use Capture Left, Capture Center, and Capture Right in OpenDrift.lua.
END: YES confirms the same saved physical limits shown in green on the display.02 · Safe first run
Begin with the controller stripped back.
These values expose the basic response without memory or settled-drift assistance hiding what the chassis is doing.
| Setting | Starting value | Why |
|---|---|---|
| Gain | 1.50 | Enough authority for a cautious first test |
| Deadband | 4 | Ignores tiny yaw noise near center |
| Max Correction | 25% | Conservative starting authority on the full endpoint-to-endpoint scale |
| Smoothing | 0.01 | Minimal filtering and delay |
| Countersteer Assist | 0 | Keeps settled-drift help out of the base tune |
| Prediction | 0 | Starts without extra yaw look-ahead |
| Hold Assist | 0 | Disables quiet-drift reference holding |
| Drift Memory | 0.00 | Disables reference feedback |
| Memory Limit | 80 | Ready for later memory tuning |
| Servo Quiet | 0 | Add only if the servo needs it |
| Anti Wobble | 50 | Track-tested starting depth for the wheel-wobble notch |
| Control / servo rate | 250 Hz | Use 333 Hz only on an explicitly supported servo |
One change. One run.Save surface-specific profiles instead of trying to make one tune cover every track.
03 · The order matters
Build authority first. Add intelligence last.
Raise Gain
Use low-speed entries. Increase it until the car catches rotation decisively without mid-drift hunting.
Set Max Correction
If response is strong but runs out of steering authority, increase the limit in small steps.
Add Prediction
If fast chassis motion overshoots before settling, add steps of 5. Back it down if transitions become sharp.
Use Smoothing only for noise
Add steps of 0.01 only when the yaw signal is visibly noisy. Filtering is not an oscillation repair.
Check Anti Wobble
Leave it at the default 50 unless a repeating wheel oscillation remains. After checking Gain, the servo, and chassis, adjust it in steps of 10.
Choose driver involvement
Add Countersteer Assist in steps of 10 if the driver is carrying too much settled countersteer.
Add Hold Assist
Once entries and transitions are clean, add steps of 5 to stabilize long sustained drifts.
Add Drift Memory last
Use steps of 0.05. If a transition carries the old drift, reduce Memory or Hold Assist.
04 · Know what the knobs do
Every setting has one clear job.
Gain
Direct correction for predicted yaw. More gain catches harder; too much creates mid-drift hunting. v1.0.8 supports values up to 6.00.
Deadband
Removes very small corrected yaw near zero without changing the response once outside it.
Max Correction
The maximum gyro correction across the full calibrated endpoint-to-endpoint span. 50% equals center-to-endpoint authority; 100% can override one endpoint to the other. Existing values migrate automatically to preserve the old authority.
Smoothing
The software yaw low-pass. Higher values reduce noise but add delay; 0.00 bypasses it completely.
Gyro LPF
Selects the QMI8658 hardware bandwidth. 24 Hz is the original mode, 120 Hz reduces phase delay, and Off bypasses the hardware LPF. Change one filter at a time and expect to retune Gain.
CH3 Gain Min / Max
Maps the full Channel 3 knob or slider movement to gyro gain. The default remains 0.50-3.00; both endpoints can be set as high as 6.00 from EdgeTX or the onboard web configurator.
Prediction
Yaw-acceleration look-ahead. It helps the gyro meet rapid rotation before it becomes an overshoot.
Countersteer Assist
Adds settled-drift countersteer without increasing fast damping. Zero keeps the base response.
Hold Assist
Controls how slowly the quiet-drift reference follows yaw during a sustained slide.
Drift Memory
Feedback strength for deviation from the learned quiet-drift reference. Tune it after everything else.
Memory Limit
Caps the Drift Memory contribution so reference feedback cannot dominate steering.
Steering Travel
Scales driver steering only. Max Correction independently controls gyro authority, and Physical Endpoints remain the final hard limit.
Servo Quiet
Adds a small output dead zone around the current servo command to suppress digital-servo buzz. Use the lowest value that quiets the servo.
Anti Wobble
Controls the depth of OpenDrift's narrow, phase-aware wheel-wobble notch. Start at 50. Raise it only for a repeating oscillation; lower it if steering becomes soft or unnatural.
250 / 333 Hz rate
250 Hz is the default for broad digital-servo compatibility. Use 333 Hz only when the servo manufacturer explicitly supports it; unsupported rates can cause heat, buzzing, erratic steering, or damage. Restart OpenDrift after changing the rate.
Transition Speed
Trims damping through direction changes. Keep 50 as the neutral baseline; lower is slower and higher is faster. It no longer changes the hard Max Correction ceiling.
With throttle connected: OpenDrift can extend prediction briefly around load changes before the chassis response develops. General Prediction still remains independently adjustable.
05 · Symptom finder
Adjust the cause, not the noise.
| What the car does | Try this first |
|---|---|
| Gyro feels weak and the driver does most of the work | Raise Gain |
| Initial response is strong but authority stops building | Raise Max Correction carefully |
| Fast response overshoots before settling | Add a small amount of Prediction |
| Direction changes become sharp or nervous | Lower Prediction |
| Stable drift needs too much driver countersteer | Raise Countersteer Assist |
| Gyro feels too hands-on after settling | Lower Countersteer Assist |
| Long drift slowly wanders after entries are clean | Add Hold Assist |
| Reference is present but does not correct enough | Add Drift Memory |
| Transition carries the previous drift | Lower Hold Assist or Drift Memory |
| Wheels oscillate repeatedly in the middle of a drift | Lower Gain first and verify the servo and chassis; then raise Anti Wobble from 50 in steps of 10 |
| Steering becomes soft or unnatural after raising Anti Wobble | Lower Anti Wobble toward 50 |
| Correction sits at Max Correction | Inspect travel and geometry; more gain cannot add authority |
06 · Transition response
Transition Speed
Keep Transition Speed at 50 for neutral response. Lower values add yaw damping through the complete direction change. Higher values reduce damping for faster rotation. Test 25, 50, and 75 only after the base tune is stable.
Test this last.Compare matched runs or blackbox logs and work back toward
50 once the preferred direction is obvious.Ready to drive