I am new to this
what I am trying to do is send data from an arduino/ethernet shield (cable) via ethernet switch (cables) > to PC >processing > and to > Macbook pro >processing at the same time.
I can get data coming into my mac and pc - but not at the same time, but together when I use them of course the IP address is in conflict, on ONE of the computers.
Iam using the IP address of 192.168.178.143 that works on mac and or pc - (but not both at same time)
how do I get the ethernet data coming out of the ardiuno to speak to 2 separate computers via ethernet switch.