In this chapter, you gained hands-on experience and knowledge about water flow sensors and counting pulses while calculating and displaying them. Finally, you made a simple web server to allow users to read the water meter through the Internet. You can apply this to any type of liquid, but make sure to select the correct flow sensor because some liquids react chemically with the material that the sensor is made of. You can Google and find which flow sensors support your preferred liquid type.
The next chapter will help you to make your own security camera with motion detection based on Arduino and Ethernet shield. You will be monitoring your home surroundings remotely in no time.