AVR-Chat

> From: rajesh parwani
> 
> i would suggest u for i2c bus or rs232 intrerface using rxd 
> and txd pins.
> although with suggested scheme ur some of the wires will be 
> left out , u can use them for future development

I know RS-232 won't go the required 400 feet and I haven't seen where I2C will
go that far - or can one use RS-485 line drivers/receivers with I2C?

Cheers,

Chuck Hackett
"Good judgment comes from experience, experience comes from bad judgment"
7.5" gauge Union Pacific Northern (4-8-4) 844
http://www.whitetrout.net/Chuck