Some good tip that you guys have give me.
Most of them i already tried before. I have worked a lot with electronics so I know how to connect the parts i give them the correct power.
The sensors is working and i can see the transmissions from the nodes to the gateway thru serial monitor. The problem is that both Vera and Domotics are losing connection with gateway. Tried both Serial and Ethernet.
I read somewhere that Vera dosen´t work so well with serial gateway so they recommend Ethernet. The last hope is that the W5100 will solve my problem.
Thanks guys.