Lablet can record data from a single or multiple sensors. A sensor recording can be started by selecting one of the sensors from the Stand Alone Experiments screen. Moreover, a sensor recording can be launched from within a Lab Activity.
When recording a Stand Alone Experiment, it is possible to record multiple sensors at the same time. To do so, one can activate or deactivate sensors from the sensor menu. The view menu can be used to change the displayed sensor. Alternatively, use a left/right swipe gesture to switch between activated sensors.
Use the start and stop buttons to record an experiment. Use the discard button to discard a recorded experiment.
|start recording an experiment|
|stop recording an experiment|
|discard a recorded experiment|
When a recording has been started from the Stand Alone Experiments screen, a data entry is created on that screen when leaving the recording screen. Experiment data can be analysed by selecting the corresponding entry on the Stand Alone Experiments screen or by clicking the analyse menu item from the sensor recording screen.
Note that for recordings started from within a Lab Activity, there is no direct option to analyse the recorded data, but the analysis is started at a later point from within the Lab Activities.
If a sensor has special settings, a menu item is displayed on the sensor recording screen. Currently, only the camera sensor has a video settings menu.
In the video settings menu the recording frame rate and resolution can be adjusted. This can be useful when recording long videos and the space on the tablet is limited. Here is a rough space estimate for a few resolutions (may differ on different devices):
If a high resolution is required, one can consider to reduce the recording frame rate to reduce the video file size.