Ray Warren wrote: > On Mon, Aug 07, 2006 at 12:43:16PM -0400, Timothy Weber wrote: > >> PicDude wrote: >>>> I've always liked the DS18B20 for one-off projects, but I'm also looking >>>> to move to something with a reliable source. (Mouser actually lists >>>> these as "Obsolete.") >>> Uh-oh .... haven't seen that yet, but not a problem now. >> Digikey didn't have them either when I looked maybe a month ago. They >> do now (whew). >> > Maxim seems to be changing the number to DS18S20.The only difference I've seen > in the data sheet is that the DS18S20 does not have a configuration register. Interesting, now that I look at it: The -S20 claims it only supports 9-bit resolution, which is why I overlooked it in the past (the -B20 doe 12). But you can apparently get 12 bits of resolution out of it, but only through an odd little arithmetic dance described on page 3 of the datasheet at . Strange design. -- Timothy J. Weber http://timothyweber.org -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist