@peekay123, hmm, where do the P1 questions come from? I can only read about Photon 
Did you rather intend to answer this one
But another question springs to mind: @htferreira, will you use the cloud, or not?
If so, have a look at the Particle.publish()/Particle.subscribe() combo in the docs.
If not, you’ll have loads of other options (wired and wireless) - UDP, TCP, I2C, RX/TX, …