piclist-bounces@mit.edu wrote:
> An opto is the way to go. You may also think about using more than
> one opto in series to increase the life of the PIC.
> 

why is that? I have used optos on 230V with no problems. Two
current-limiting resistors, one on each side of the opto.

If there is a reason to use more than one opto in series, I'd
love to hear it, please. 
_______________________________________________
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist