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Xsens DOT App [Android] Guide v2020.1

v2020.1 Updates

  • "Default" mode no longer supported
  • Heading reset function introduced
  • 12 different measurement modes are introduced

For further information on the new updates, refer to this BASE article, release notes or to the Xsens DOT User manual

Turn on the Xsens DOT and make connection with the app

Turn on the DOT trackers you want to connect by plugging in a USB cable. Once the trackers are on, you can either unplug the micro USB cable or leave it in charge while using the app. 

It is important that users do not try to pair Xsens DOT in the Bluetooth tab of their phone as normally done with other Bluetooth devices such as headsets. This would make the sensors undetectable for Xsens DOT App

Launch Xsens DOT APP

Launch the app and this will automatically scan for devices. Once the app is started wait until all your DOT trackers are detected. To start a new scan, drag the page down.

The Xsens DOT App requires the following settings to be enabled:

  • Bluetooth on
  • Full permission to read and write on the mobile device
    If those requirements are not met when the app is started, you will receive a notification.

Screenshot_20200122-124300_Xsens_DOT.jpg

To connect a DOT tracker, click on the toggle switch that corresponds to the tracker you selected. When connection is established, the tracker will be highlighted and a popup message will appear at the bottom. In addition, you will be able to see the battery status and, by clicking on the DOT icon, you can access further details such as name TAG, firmware version and calibration date. If you have Multiple trackers connected, it is recommended renaming them by editing the TAG to avoid connecting the wrong trackers.

Screenshot_20200122-124253_Xsens_DOT.jpgScreenshot_20200122-124317_Xsens_DOT.jpg

Screenshot_20200122-124322_Xsens_DOT.jpg

Measure & Collect Data

Once your Xsens DOT trackers are connected, click on the “Measure & Collect” button at the bottom of the screen. By default, all the tracker will record data if no other setting is changed. To change that, click on the selected tab button and uncheck the tracker you want to exclude. When you are ready to record, click START on the top right corner. 

Xsens DOT App supports 12 different measurement modes. Here you can choose between Sensor Fusion Data and Inertial Data as well as the possibility to log the data file on your device. 

  • Sensor Fusion Data: includes orientation, free acceleration and status
  • Inertial Data: includes acceleration, angular velocity and Magnetic field

Note: The "Default" mode featuring in version v2020.0 is no longer supported. This means that it is not possible to record both Sensor Fusion and Inertial data at the same time

Screenshot_20200428-102551_Xsens_DOT.jpg

Start recording

After the chosen measurement mode is selected, click on the “START” button on the top right corner to start recording. After a short sync, data charts for each sensor will be displayed. To view the graphs for multiple trackers, swipe left or right.

Note that for the case of Orientation data, Euler angles will always be displayed on the app.

Additionally, version v2020.1 introduce the "Heading reset" function. This will allow the heading of all the trackers to be reset to 0. To revert the heading to the previous value, click on "revert heading". This step is also needed in order to allow for a subsequent heading reset.

Screenshot_20200428-102722_Xsens_DOT.jpgScreenshot_20200428-102730_Xsens_DOT.jpg

Stop recording

To stop your recording, click on the “STOP” button on the top right corner. A different csv file for each tracker will be stored in This PC\[your phone]\Phone\Android\data\com.xsens.dot.android\files\logs directory within your mobile device.

Screenshot_20200122-124539_Xsens_DOT.jpg

Export Data

Connect your mobile device to a PC through USB cable. Make sure you give permission to access the file transfer between phone and PC. From “This PC” access your device and look for the directory This PC\[your phone]\Phone\Android\data\com.xsens.dot.android\files\logs .

Access the folder and select the subfolder corresponding to the recording you want to export. Each subfolder will be named in the following format: YearMonthDay_HourMinutes. To facilitate the identification of the correct recording, enabling Details view and sort it by creation date might help.

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Each file can be opened with Microsoft Excel and the content of the csv file depends on the measurement mode previously chosen. This can include the following data:

  • Packet counter
  • Timestamp
  • Delta_q (W,X,Y,Z)
  • dV(1,2,3)
  • Mag data (X,Y,Z)
  • Orientation in quaternion (W,X,Y,Z)
  • Free acceleration(X,Y,Z)
  • Status Byte

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For further information about each quantity, refer to our Xsens DOT User Manual.

Troubleshooting

App fails to install

It is possible that your processor architecture is not supported. Please refer to this Base article to check that. 

Sensors are not detected

Make sure location services and Bluetooth are enabled first. Also, make sure the sensors are not paired in the Bluetooth tab of your phone.

 

 

 

 

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