I have an temp control aurdino that I have set up currently with a Potentiometer info on this can be found here for anyone looking very easy fermentationriot.com - This website is for sale! - fermentationriot Resources and Information.. but what I want to be able to do is change the setpoint via a webform is this possible anyone have any examples or hep they can offer.
Please clarify
What do you mean by
change the setpoint via a webform
What "webform" is it on a web page on a web site on the Internet?
I suspect you are saying that you want to update a form on a website, which does a post to a server, and you want that post to action something on your Arduino.
BTW. The reference you posted seem to be an Arduino posting t a website, and not a website sending to an arduino, i,e its the opposite of what you appear to be asking for