for learn clone ethernet shield mac address
what can I do?
Does not write mac address under the product.
There is no specific MAC address. You set the MAC address to anything you like in your sketch. You only need to make sure that the MAC you choose isn't a duplicate of any other device on your network.
By the way, the "HR911105A" you quote is just the model number of the Ethernet jack on the shield and really doesn't provide us with any useful information. The important thing is the model number of the Ethernet controller IC on the board. That will be W5100, W5200, W5500, or ENC28J60.
What can I write to shield in mac with w5100 IC number? Is there sample code?
0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED I tried to write this to mac address in 'udpsendreceivestring' code example
yusuf55:
What can I write to shield in mac with w5100 IC number? Is there sample code?
Yes, they are under File > Examples > Ethernet in the Arduino IDE.
Here is the documentation for the Ethernet library:
yusuf55:
0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED I tried to write this to mac address in 'udpsendreceivestring' code example
...and what happened?