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[on:]

Hi,

As completely new to Arduino I'd like to get clarification on what I'm actually purchasing!

What I want to achieve:
I'm wanting to monitor my home power usage (as seen many times on the internet) but also want to monitor the external temperature. I want to be able to compare the temperature against power usage. For the comparing and database storage etc then I'm 100% spot on with that.

What I "think" I need:
1 x Arduino Ethernet Board
1 x POE module

Am I correct in thinking that with these (with the additional components to monitor power and temp) I can perform the task by powering the board over ethernet but also make calls back to an interface I'd be running locally on the network.

A future modification would be to also track when windows/doors are opened and closed and when the heating in the house turns on etc.

[Reply #1 on:]

You also need a device to inject the power into the ethernet line if your switch or hub is not already so equipped.

[Reply #2 on:]

ok thanks!

I do have the PoE stuff already so just wanted to make sure from the Arduino side Iwas correct

[Reply #3 on:]

Just to be sure, you already have an Arduino Uno or similar, right? The ethernet board is meant to piggyback on an Arduino of some type; it's just a peripheral device.

[Reply #4 on:]

Based on the description of the Ethernet board I was under the assumption that I did not need anything additional?

http://arduino.cc/en/Main/ArduinoBoardEthernet

[Reply #5 on:]

Yes you're correct.

I see now there's a "shield" and a "board". The former requires an Uno, etc. and the latter does not.