My questions are:Am I in the right direction looking at RS485 for connectivity?What affordable and easy to implement options are available?Should I consider designing an easy/affordable solution? Would this be useful to other people or am I reinventing the wheel?
I have looked a the following options:https://www.sparkfun.com/products/10124? - Good option but it does not offer termination options. (Can only link 2 nodes.)http://arduino-direct.com/sunshop/index.php?l=product_detail&p=323 - Very cheap,little documentation and not sure about number of nodes.
Am I in the right direction looking at RS485 for connectivity?
Should I consider designing an easy/affordable solution?
Would this be useful to other people or am I reinventing the wheel?
The first option is the one I use. Do not forget that the 485 is a description of physical, electrical, NOT transmission protocol.
I hope it would be useful because I'm spending a lot of time (re)inventing this particular wheel If you are not in a huge hurry (and I assume not as you are considering designing your own system) you may be interested in thishttp://www.ardweenet.com/
My thought was also to send the power over the the connection like power over Ethernet.
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