Arduino Internet: Ethernet shield VS. Wifi shield

Hello! Arduino,

Could anyone please tell me what is the function of arduino Ethernet shield with POE module? How does this POE work in arduino, does it out put the power to power up the arduino? or input the power to power the wireless router?

And my other question is: which shield is better for arduino Internet project? Wifi shield or Ethernet shield??

Any suggestion would be appreciate!

Tony

I don't know which PoE module or Ethernet shield you're considering, but typically this would be used to extract power from the Ethernet so that it could be used to power the Ethernet shield and Arduino.

Tonyzhang: which shield is better for arduino Internet project? Wifi shield or Ethernet shield??

An Ethernet shield will only connect to an Ethernet network. A WiFi shield will only connect to a WiFi network. Which is 'better' for you depends which type of network you need to connect to.