![]() It also supports Hardwired TCP/IP Protocols like TCP, PPPoE, Ethernet, UDP, ICMP, IPv4, etc. By using this module, we can complete the internet linking without the support of an Operating System. In simple terms, this module enables the Arduino board to connect to the internet. It is a single-chip, full-featured, internet-enabled module to establish an internet connection. ![]() This article is written assuming that the reader has an understanding of basic computer networking which includes having knowledge of connecting computers to hub/router with RJ45 cables, IP and MAC addresses, etc. The Ethernet module is used to establish communication between the computer and Arduino in a LAN or Wired Network. In this project, we are going to use the latter option to control an LED over the Internet by interfacing Arduino with W5100 Ethernet Module. One option is to use an ESP8266 with Arduino and the second option is to connect an Ethernet module with Arduino. But if you are working with a humble Arduino UNO or Nano board and you want to connect your Arduino to the internet, then you have two popular options. As we know, these devices have an in-built Wi-Fi modem that allows you to connect to the internet. We have already worked on many IoT projects, most of which were built around ESP8266, ESP32, or Raspberry Pi. Also, since Ethernet is a wired connection, it provides better speed and has lower latency. For instance, in most industrial applications for a stationary device, Ethernet is usually chosen over Wi-Fi connection simply because it’s more reliable and secure. Although a Wi-Fi connection enables remote access to the internet, it has its own limitations. ![]() Most connected IoT devices today are connected to the internet using a Wi-Fi connection.
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