Ethernet ,MQTT connection

Projects Networking, Protocols, and Devices
1

Hi , i'm working in project Iot and i want to connect my arduino mega 2560 to the internet (ethernet shield wiznet w5100 ) but i'can't connect it in the office , but when i trided to connect it at home it connect easy ho i can do it .

link of DATASHEET of the shild : https://www.mouser.com/catalog/specsheets/A000056_DATASHEET.pdf

I had attached also the source code , please help me solve this problem thanks .

mqtt_basic.ino (1.92 KB)

2

If it works at home but not at the office you need to contact your IT department to allow the ports you are using in your sketch.

Bob.

3

Different networks use different ranges of IP addresses so using a static IP is not going to work. Use DCHP to get a dynamically assigned IP address. The Arduino IDE includes Ethernet examples such as DhcpAddressPrinter which show how to use DHCP.