I'm pretty new to this whole thing so please excuse my lack of familiarity with terminology.
I'm looking to build two "buzzers" of sorts. One will live on the ground floor and the other will live on the fourth floor. There is wireless internet as well as wired internet available to connect the two.
This is the basic idea. I might put more frills in later. Both buzzers have one button and one LED. I want it so that once a buzzer's button is pressed, the LED lights on both buzzers will light up. Then, only when buzzer two's button is pressed, will the LED lights on both buzzers turn off.
I'm pretty tied up on the two Arduinos communicating with each other. Is it possible to do something like that?