This place has a PIC based robot compass useing 2 KMZ10A units. http://www.robot-electronics.co.uk/htm/cmps.shtml > > The "client" proposes the use of 3 x KMZ51 magnetic sensors. An accuracy of > around 1% should be able to be obtained with these with care. -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email listserv@mitvma.mit.edu with SET PICList DIGEST in the body