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How to communicate with arduino via wifi?

I tried to communicate with arduino via serial communcation, but failed..

I'm using a Processing program to send data through serial, and the arduino code reads that serial data. Firstly I used an Arduino Uno and it worked. But I couldn't make the same thing using Edison.

As the Arduino Uno has only one cable to plug it was easy. but I think what I'm missing with Edison is not connecting the proper cable. (do I have to connect both cables ?)

Btw as my Macbook Air has only 2 USB slots, I connected one to my sensor (LEAPMOTION) and the other to power edison.

Is it possible to communicate through serial with edison using only one cable (which is used to power edison) ?

And if I'm communicating through WIFI how can it be done? (if possible a sample arduino code)

 

Thanks in advance,

Ramith.

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