On Fri, 16 Nov 2001 15:23:53 +1200 Steve Baldwin writes: > > You may want to experiment with LDR's. I was using one in a > project and noticed that it was really sensitive to changes at low > light levels. ie. There was a difference between being in a closed > drawer inside one piece of black heatshrink and having two layers > of heatshrink. I didn't investigate any further than that though. > What has been your experience with repeatability with LDR's? My experience with CdS LDR's has been less than spectacular. They have a "light adapted" resistance that is different from the "dark adapted" resistance. Harold FCC Rules Online at http://hallikainen.com/FccRules Lighting control for theatre and television at http://www.dovesystems.com ________________________________________________________________ GET INTERNET ACCESS FROM JUNO! Juno offers FREE or PREMIUM Internet access for less! Join Juno today! For your FREE software, visit: http://dl.www.juno.com/get/web/. -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email listserv@mitvma.mit.edu with SET PICList DIGEST in the body