In order to complete this lesson, you will need an Arduino, an Ethernet Shield, and the Pressure Sensor. If you do not have this particular pressure sensor, you can probably follow along in the lesson using whatever sensor you have that is of interest.
1.The key issue in getting this project to work is to get your mac address and IP address from your router or network.
2.If you are at school, simply speak to your network administrator, and he will help you get an IP address for your arduino.
3.If you are at home, you will need to connect to your router from a browser, and configure it to assign an IP address and agree on a mac address for your arduino.
The arduino itself does not have a hard wired mac address, but you set the mac address in the arduino software, and the IP address as well.
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