This project is very simple and clean project of sending Temperature data to server with MQTT with Arduino Ethernet Board.
The original link is https://www.compose.io/articles/a-temperature-sensing-and-networked-arduino/
The authors is introducing his project as below.
The program initializes the Ethernet connection and then asks the pre-configured PubSubClient, as the MQTT library advertises itself as, to connect to the server with a client identity of “arduinoClient”.
You can get all source code from below link.
TAG : 201402, W5100, Arduino, IoT, MQTT, Tutorial