On Mon, May 4, 2009 at 9:14 AM, solarwind wrote: > On Sun, May 3, 2009 at 8:57 PM, Xiaofan Chen wrote: >>> I'm thinking of making a simple PCB in the style of an ethernet switch >>> that will simply have a few RJ11 or RJ45 connectors connected to each >>> other. Nothing more, nothing less. Is this a good idea? >> >> Maybe not. > > Why not? How do you recommend connecting everything together? Buy a US$10 switch. ;-) CAN and RS485 support multi-drop. Ethernet Physical layer does not seem to support multi-drop. http://www.bb-elec.com/tech_articles/rs422_485_app_note/overview.asp -- Xiaofan http://mcuee.blogspot.com -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist