Floor Grid

Camera Shows what the AI sees. Green dots = hands/feet on the grid.

Camera is off. Start it in step 2.

Grid preview Same image as the projector. Click or hold tiles to test without a camera.

1. Projector

Drag the new window onto the projector screen and press its Fullscreen button. Works on a wall or the floor. No projector yet? Skip this and use the preview.

2. Camera

AI model

Track

3. Calibrate

4. Play

Settings

Rows Columns Touch delay (ms) Detection confidence (0–1) Grid margin (0–0.3) Round length (s) Show tracked points on grid Sound effects Volume

Ball mode

Auto threshold (recommended) Manual threshold (5–120) Smallest ball (pixels) Largest ball (pixels) Show motion on camera

Turn on "Show motion" and throw a ball: red = what the camera sees moving, yellow ring = where it counted the hit. Auto threshold adjusts to how grainy the camera is. To set it by hand, untick Auto: missed throws → lower it, hits with no ball → raise it.

Touch delay: how long a hand or foot must stay on a tile before it counts. Raise it if tiles flicker or trigger when people just reach toward the wall.

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