Prashant Bhandary wrote: > The Sharp module seems to do a pretty good job of detecting the > signal. I suspect it uses one of those single chip units where the > whole thing is built into a TO-126 type of package using an IR > transparent plastic and has three pins - Vcc, Gnd and output. The > metal box does the all important job of shielding. Prashant and others: By the way... Since the shielding is, as you say, all-important, it's NECESSARY to ground the metal case. -Andy === Andrew Warren - fastfwd@ix.netcom.com === === Fast Forward Engineering - Vista, California === === === === Custodian of the PICLIST Fund -- For more info, see: === === http://www.geocities.com/SiliconValley/2499/fund.html ===