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Panel reference

Input Shaper panel

Vibration / ringing tuning

Where More → Input ShaperControls 5

Set the X and Y resonance frequencies and shaper type to cancel ringing artefacts (those echoes you see after sharp corners on tall walls). Auto-calibrate via Measure X / Y / Both if you have an ADXL accelerometer mounted, or set values manually if you already know them.

Input Shaper panel with two axis cards: X AXIS at 48.2 Hz (mzv shaper selected) on the left, Y AXIS at 39.4 Hz (mzv shaper selected) on the right. Each card has −0.5/+0.5 Hz adjust buttons and a 2×3 grid of shaper type pills (zv, mzv, zvd / ei, 2hump, 3hump). Three Measure buttons run across the bottom.12345

  1. X axis card

    Resonance frequency + shaper for X.

    Live X-axis resonance frequency in Hz, with ±0.5 Hz adjust buttons. The shaper grid below picks how Klipper smooths motion to cancel ringing at that frequency.

  2. Y axis card

    Resonance frequency + shaper for Y.

    Same shape as the X card but for the Y axis. Y is usually a lower frequency than X because the Y mass is heavier (whole bed moves, in some designs).

  3. ± frequency adjust

    Step the frequency up or down by 0.5 Hz.

    Manual tuning. The right frequency is found by Measure (below) or by running the SHAPER_CALIBRATE flow externally and writing the result here.

  4. Shaper type grid

    Six shaper algorithms.

    zv (default, fastest), mzv (modified zv — most common pick on the QALAM), zvd (more aggressive), ei (extra insensitive), 2hump_ei (two-frequency), 3hump_ei (three-frequency). The selected shaper is shown in green.

  5. Measure X / Y / Both

    Auto-calibration via ADXL accelerometer.

    Runs Klipper's SHAPER_CALIBRATE flow on the chosen axis. The toolhead vibrates at progressively higher frequencies while the accelerometer records the response. After ~2 minutes per axis, the panel writes the optimal frequency + shaper to the corresponding card.

Good to know

  • Manual ± changes apply for the current session only — run SAVE_CONFIG (or finish a print and tap Settings → Save) to keep them across reboots.
  • Measure X / Y requires an ADXL345 accelerometer wired to the toolhead — present on all 3DISM QALAM machines with EBB36 toolhead boards.
  • Re-calibrate after any mechanical change: new belt tension, new toolhead mass, swapped bed.
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