Open serial communications and wait for port to open: with the IP address and port you want to use Initialize the Ethernet server library So I will set my shield IP to 10.1.1.77 by altering the line to:īyte mac = For example, in my home the router’s IP address is 10.1.1.1, the printer is 10.1.1.50 and all PCs are below …50. This is simple, go to the line: IPAddress ip(192,168,1, 177) Īnd alter it to match your own setup. You need to specify the IP address of the Ethernet shield – which is done inside the sketch. However don’t upload it yet, it needs a slight modification. This loads a simple sketch which will display data gathered from the analogue inputs on a web browser. Open the Arduino IDE and select File > Examples > Ethernet > Webserver. Once you have your Ethernet-enabled Arduino, and have the external power connected – it’s a good idea to check it all works. In case you’re not sure – this is the W5100 IC: A 9V 1.5A plug pack/wall wart will suffice.įinally it does get hot – so be careful not to touch the W5100 after extended use.

You will need an Arduino Uno or compatible board with an Ethernet shield that uses the W5100 Ethernet controller IC (pretty much all of them):įurthermore you will need to power the board via the external DC socket – the W5100 IC uses more current than the USB power can supply. Furthermore, here is a good quick rundown about Ethernet. It will be assumed that you have a basic understanding of computer networking, such as the knowledge of how to connect computers to a hub/router with RJ45 cables, what an IP and MAC address is, and so on. In this chapter we will introduce and examine the use of Ethernet networking with Arduino over local networks and the greater Internet.

Arduino efi for mac sketch