I work for quite a large catering company, they've got many, many different sites.
We've got to do temperature checks twice daily. So I rigged up some one wire waterproof temp probes, hooked them into all the fridges, and got it all working to upload data into excel document. Works fantastically.
It seems to have impressed all my bosses, and I'm now in the process with another guy of making up a business plan to implement it (possibly worldwide, 56000 sites, I'm not kidding on that).
So it's got be able to programmed in one location, and wired in at site. Then just work, or be adjusted remotely.
So, where I'm at...
I can make a web server that'll display the temps via ethernet shield. Then an I.T. guy in the company can make a script that'll find all the web servers, combine the data, and we'll have searchable temps from each site. I'm hoping to make it send emails to certain addresses if a temp is out. I'm pretty sure I can figure that part out.
It's the idiot proofing that's messing me up.
I was wondering if it'd be possible to adjust a sketch via the webserver page. So if a temp probe dies (the one wire has a unique code for each temp probe), a new one can be hooked up, and somebody can remotely alter parts of the sketch via the webpage. (or change certain parts of the sketch, so a box somebody can type in, and it'll change preset parts of the sketch).
I've done some searching but I'm not coming up with much. If anybody had some links of something similar that's been done, I'm happy to figure out the rest.