Can you make Arduino Uno send information through a WiFi module to a server?
Can you make Arduino Uno send information through a WiFi module to a server?


Yes, I can.

The simplest way is through an HTTP "GET" request. Every time you request a web page (and there are plenty of examples of that) you are sending data to the server to tell it both what web page to get (/foo/bar.php) and what data to submit to that web page (?baz=4).

It's then up to you to craft that GET request, such as:

GET /foo/bar.php?baz=4 HTTP/1.1
Host: example.com
Content-length: 0


and write the PHP web page (or whatever language you prefer to write web pages in) to do something meaningful with the "baz = 4" parameter.