AVR-Chat

Stuart,

> I have used rs232 in the past, but it means either:
>
> 1) Creating a serial communications ring where Master talks to slave 1,
> slave 1 talks to slave 2 and slave 2 talks to the master. If one of the
> slaves die, its hard to tell which is at fault.
> 2) Having a master device that has multiple rs232 uarts.

or 3)
One master UART, and some select logic, 3 pins of select will give you 8
remote AVRs.

or 4)
Give each remote device an ID (jumper on pcb maybe) and have the Master
include some protocol which allows it to select one of the remotes for
receiving data.

> So my questions are these: Is there a better bus to use than rs232?

if speed isn't critical, I'd stick with rs232, its less cable and pretty
simple.

Paul