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Arduino ethernet shield

  • 24-11-2013 10:34PM
    #1
    zagmund
    Registered Users, Registered Users 2 Posts: 2,501 ✭✭✭


    I'm looking to buy an ethernet shield for an Arduino, but getting a little lost in the differences between the different ones.

    This one looks appealing simply because it's £8.50, however the reference to 2009 in the title makes me think that it has been replaced by something more modern.

    Like maybe this 2012 version for just a few pence more.

    Or this one for £17.99.

    From what I can gather they are all based on the same W5100 chipset.

    At this point I'm just interested in a proof of concept - getting it to log data to a Raspberry Pi, so very basic ethernet connectivity is all that is required - volume won't be an issue.

    Does anyone know a reason *not* to go with either of the £8 ones? Or, alternatively, can anyone suggest an even better value one? Or one for around the same sort of price from an Irish retailer?

    Cheers,

    z


Comments

  • #2
    DublinDilbert
    Registered Users, Registered Users 2 Posts: 5,400 ✭✭✭DublinDilbert


    There's two types of Ethernet shield for these, one based on the whiz-net chip and another based on the microchip mac/phy (you have to run your own tcp/ip stack).

    It looks like both of them are based on the whiznet chip, so should be ok. I just briefly worked with these but wasn't bowled over by the whiznet chip (sounds great on paper).


  • #3
    ozmo
    Registered Users, Registered Users 2 Posts: 3,893 ✭✭✭ozmo


    The R3 is the current one - but that older R2 you linked to can be found for as low as £5.50 inc postage on ebay and is fine for may uses.

    The main difference I think is you get allowed to use A0 and A1 in your own project in the R3 - where the older one reserves those for the Memory card reader whether you use it or not (there are easy workarounds if you need use them).

    Also - the R3 has a place where you can bolt on a PoE - but doesn't come with one.

    There is another type - really cheap and easy to get - that also works but may be bit too much hassle link

    “Roll it back”



  • #4
    romperstomper
    Registered Users, Registered Users 2, Paid Member Posts: 1,855 ✭✭✭romperstomper


    i have one, not doing anything with it. PM me and i'll sort you out


  • #5
    zagmund
    Registered Users, Registered Users 2 Posts: 2,501 ✭✭✭zagmund


    Thanks for the offer, but I bought a couple of the R2 ones and they are working fine so I'm sorted. Plug in, include the library (ethernet.h I think) & away we go.

    z


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