Computer Science Mojo

~ David's Notes on coding, software and computer science


Velocity Ruler

Tag: Mobile  
By: David     On: Fri 19 August 2016      Pageviews:

Measure the surface water velocity from a distance.
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Android: Google Play

Privacy Policy

Uses camera permission to allow the user to track object movement. No photos are taken, and no personal information of any kind is recorded or stored.


Surface Water Velocity is an important factor when considering surface water hydrogeology as it is often used to calculate average cross section velocity and hence directly affects the calculation of discharge of rivers. It is therefore important to have a quick, easy and efficient way of measuring velocity. This research is targeted towards implementing an innovative way to measure surface water velocity by using basic trigonometry and the Rotation Vector Sensor present in everyday Android smart phones.


  • Android

Built With

  • Android Studio 1.0.2
  • Java

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