I'm wondering what sort of experience others out there have had with connecting 2 boards over I2C. I've done a few searches and everything is kind of vague. I'm interested in understanding the "standard" possibilities for 2 boards running at 16Mhz without an extender, and just a couple simple pull up resistors on the master.
Here's my experience: I thought telephone wire would be a nice choice: 4 conductors, easy to find, modular connectors, cheap, etc. At about 12' the boards would sometimes communicate, for a little while before loosing sync. At about 8' it seems to be pretty reliable.
Other conductors? Would shielded microphone cable work better and if so how much?