Sending data to/from arduino server to web server

Projects General Guidance
1

Hi, I think I have out-googled myself to the point of losing track of what I was looking for! Old age is a curse.

I am looking for, what I suspect, a simple solution.

I have created a web page on my Arduino with an Ethernet shield, and I am able to control LEDs and relays from it using my web browser, however the project I am working on requires the use of PHP to do some manipulating of data, which I believe would be outside the capability of an Arduino hosted server

Instead I have created a web page on my ISP provided site (e.g. arduino.myisp.com) that takes some inputs from an HTML form and does some work on the input data using PHP. the resultant data is in the form of a text string that is always 150 characters long. Once this string has been created I would like it to be sent to my Arduino which is connected to the internet and can be accessed via a DDNS account (e.g. myarduino.myddnsacct.com). The Arduino server would then use the data to set various pin states and variables, read those pin states and variables and then create a 150 character text string that would be sent back to the internet web page for comparison to ensure all was sent, received and implemented correctly.

The only bit I am stuck on is how to send the data to the arduino and capture it, and vice versa.

Any pointers please?

2

Once this string has been created I would like it to be sent to my Arduino which is connected to the internet and can be accessed via a DDNS account (e.g. myarduino.myddnsacct.com).

That is generally outside of what web servers do. They interact with clients, so the arduino would need to be the client sending the data to the ISP server for the ISP server to send it back to the arduino.

3

Hi, thanks for the response. So ignoring the sending back and forth for the moment, is there a way I can hit a button on my ISP server web page to send a string to the Arduino?

Thanks

4

ex-egll:
Hi, thanks for the response. So ignoring the sending back and forth for the moment, is there a way I can hit a button on my ISP server web page to send a string to the Arduino?

Thanks

Yes, you need the full URL to your arduino for your button in the page.