> I might revisit the PIR modules

You could try one (security sensors, especially exterior, are often
at giveaway prices, w/o bulbs) and window the lens with paint or
paper to limit its view


--=20
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist
.