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[Reply #15 on:]

Maybe you should describe what your network looks like. Router? Switch? Cabling? How is it all connected?

[Reply #16 on:]

That's a new one on me!! As far as I know its a standard cable, do I need a cross over cable?

How would I know without knowing how you are trying to connect the arduino to your pc. 

[Reply #17 on:]

How would I know without knowing how you are trying to connect the arduino to your pc.  smiley-roll-blue

Sorry...I am trying to connect directly to my Mac

[Reply #18 on:]

Maybe you should describe what your network looks like. Router? Switch? Cabling? How is it all connected?

It's a basic domestic set up....

I have a wireless o2 router,
I am connected to that via the air port on my mac
and I am plugging the Arduino directly into the ethernet socket on my Mac

My airport settings tell me that "AirPort is connected to Mash up and has the IP address 192.168.1.64."

When I plug the Arduino into the ethernet socket my ethernet setting tell me "Ethernet has a self-assigned IP address and will not be able to connect to the Internet".  an the ip address is 169.254.139.32.

And finally when I go to a site called http://www.ip-adress.com/ it tells me my ip address is 188.222.96.25

[Reply #19 on:]

Not familiar with how macs work. If you have a router, plug the arduino into the router and things may be easier to use.

[Reply #20 on:]

I'll try tomorrow.

Thanks for your help

[Reply #21 on:]

Alternatively, if you want to connect directly, you will (almost certainly) need a crossover cable. Then you will need to assign your arduino a unique address within the same autoconfig subnet as the mac. If you paste the output of ifconfig here, someone will be able to figure it out...

[Reply #22 on:]

If you paste the output of ifconfig here, someone will be able to figure it out...

Here it is

Code:

unknown-00-1e-52-71-df-2b:~ tomslater$ ifconfig
lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> mtu 16384
inet6 ::1 prefixlen 128
inet6 fe80::1%lo0 prefixlen 64 scopeid 0x1
inet 127.0.0.1 netmask 0xff000000
gif0: flags=8010<POINTOPOINT,MULTICAST> mtu 1280
stf0: flags=0<> mtu 1280
en0: flags=8863<UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 1500
ether 00:1b:63:b6:d3:9c
media: autoselect
status: inactive
fw0: flags=8863<UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 4078
lladdr 00:1e:52:ff:fe:3b:4b:fa
media: autoselect <full-duplex>
status: inactive
en1: flags=8863<UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 1500
ether 00:1e:52:71:df:2b
inet6 fe80::21e:52ff:fe71:df2b%en1 prefixlen 64 scopeid 0x6
inet 192.168.1.64 netmask 0xffffff00 broadcast 192.168.1.255
media: autoselect
status: active

[Reply #23 on:]

Hmm... Thought you said there was an autoconfig address mentioned. Am I mis-remembering?