We are thrilled to welcome Sparki in the codebender family!

Sparki is an open source Arduino powered robot which is ideal for learning electronics, programming and robotics, all in one. With the mission to help you learn with robots, ArcBotics created an affordable and easy to use beginner robot that comes with a great variety of accessories and more that 100 free lessons. Designed for use in classroom too, Sparki is already being used in more than 1000 K-12 schools and in many top universities.


In this tutorial you will learn how to use one water flow sensor with an Arduino board.

The water flow sensor consists of a plastic valve body, a water rotor and a hall-effect sensor. When the water flows through the rotor, rotor rolls and the speed of it changes with a different rate of flow. The hall-effect sensor outputs the corresponding pulse signal.