For my EE senior project next year I want to build an HVAC controller for a system that has about 12 heating zones.
I want to be able to control it with a good looking web interface- things like times when zones are active, temperature setpoints, etc.
I have zero experience with Arduino hardware but i did FIRST robotics in highschool and have a typical EE programming background, so it feels like something I could pick up with a little time.
Right now i’m looking at this hardware:
because it has relays built into it, but I would need to link 2 of those units together to get enough outputs, and its not clear if I could use an ethernet shield with it or not. I’m looking at 1-wire temperature sensors, which would mean all the zone sensors would work off of 1 digital pin, right?
I’d like to know if there’s a better solution for having ~16 relays controlled from one arduino with ethernet control.
I’m also pretty unclear about how ethernet control would work. It looks like the ethernet shield is rudimentary, and I would need to set up a website on a regular apache/php server to get a good looking interface that would have to talk to the arduino somehow, correct?
Are there any good builds similar to this that have good documentation?
thanks for any help