How to Calibrate Taps
Chassis Tap works out of the box with a default sensitivity for your Mac model. Calibrating it records your own taps instead, which makes detection more accurate for your specific MacBook and tapping style. Calibration is a one-time setup step, not something you configure per automation.
- Open Settings and go to the Calibrations tab.
- Select Tap Detection to open the calibration wizard.
- Step 1, Calibrate: read the overview, then set samples per combination (1 to 5, default 3). More samples take longer but improve accuracy. Click Start Measuring.
- Step 2, Measure: the wizard walks through all six combinations, left and right side, each with single, double, and triple tap. For each one, click Record Tap, wait for the "Get ready..." prompt, then perform that exact tap when the on-screen countdown tells you to. Repeat until every sample for that combination is recorded, then click Continue.
- Step 3, Test: the wizard replays each combination one at a time. Click Test This Tap, wait for the countdown, then tap as prompted. If it shows Detected, click Next. If it shows Not Detected, click Try Again to retest or Record More Samples to go back and add more samples for that combination.
- Step 4, Apply: review the list of calibrated combinations and click Save Calibration. The new calibration takes effect for your automations the next time ChassisWatch starts.
- You can cancel at any point before saving. If you have already recorded taps, ChassisWatch will confirm before discarding them.
- To start over, go back to the Calibrations tab, right-click Tap Detection, and choose Reset to Defaults. This removes your calibration and reverts to the default sensitivity for your Mac model.
Chassis Tap needs the accelerometer, which only exists on M2 or later chips and the M1 Pro. If Tap Detection is not available to calibrate, your MacBook's hardware does not support it.
