I am looking for how to hook up an Arduino to a LAN, and then "look at" inputs to that Arduino from a PC connected elsewhere on the LAN. I must also be able to send a command from the PC across the LAN to the Arduino, to turn digital outputs of the Arduino on or off. The client software in the PC should be written in Delphi... yes, possibly a deal breaker, I know. But if no DELPHI solution is found by the end of August, I will open the bidding to other developers.
If you have the skills to work up a solution, have a look at the page cited, please?
I'm not volunteering to do it, but I would consider Lazarus/FreePascal to be a better bet for the PC end of things because of the code portability.
It is not as finished & polished as Delphi but it is very good.
A web based setup would probably be much easier...
I'm guessing you mean replace the Delphi part with "fancy" HTML???
I.e....
Arduino, with two digital pins connected to, say, LEDs, two others connected to swiched inputs
...
That connected to a module to put the Aruduino on the LAN
...
And, running in a PC on the LAN, a webpage with buttons and fields which cause the state of the LED to change, reflect the state of the switched inputs, respectively?
So... the Arduino would need a web server in it? (Possibly needed by what I suggested originally). What would you use to "build" the webpage which would have to run in the browser in the PC which would generate the required user experience? Hand coded HTML created in a text editor, no ActiveX, would be my preference. Possible? If it is as simple as I'm hoping, could you post the heart of the relevant HTML?