SprintTimer Guide

Instant finish

Instant finish relies almost entirely on motion or object detection and gives instant timing feedback.

Motion detection
A time is saved when something moves in the red rectangle. You can test it in the preview (the detection zone changes color when it detects motion). You can also change the sensitivity if it misses detection or you get unwanted readings (higher value = more sensitive). The detection will pause for 1.5 s after a motion before it becomes active again. This is to avoid multiple readings on the same pass. You can change the length of the pause in the finish setup.

Object detection
You can also use Human detection, Instant Finish will then check if there is a person in the view and save the time when he is at the finish line. With QR detection the camera looks for QR-codes and saves the time and the content of the code (e.g. a name) when a new code occurs in the view. If you have voice feedback both the time and code content will be spoken.

There is also a manual option where save a time by tapping anywhere in the camera view. SprintTimer here functions as a manual stop watch, but with the added advantage that the times are saved.

Auto finish
This works slightly differently from the other finish modes. Only the last passage/detection is saved and the app returns to the start position. The results from all tests can be viewed by tapping Results. This mode is intended to be used together with the Stop after setting.

This setting is useful if you want to run a series of tests. For example, a shuttle test when the runner passes the finish line several times, but only the last is interesting. It can also be used for flying sprints together with Start sender. Here the Stop after should be set to 1. You can read more about sprint and shuttle testing in this blog post.

Reset the time at first pass.
This setting enables you to start the timing on a motion. Start the clock and the detection before the run (when is not important). The first time a motion or a human is detected the clock is reset and the time is counted from that point. This can be used e.g. for shuttle tests that requires a flying start ((blog post).

This page is also available at sprinttimer.app/support