Hi, i'm trying to make a system where arduino can periodically send sensor data to web server, and also web server can request sensor data from arduino when user click "update button" in web application?
Is it possible to make it done? I only found tutorials how to send data from arduino to web server, and how to retrieve data from server.
How should that communication look? I guess that GSM will make TCP connection to server, and then server would be able to request data from it? Thanks in advance, i really need your help, it's for my college project.