sorry R$300 for HIH4000, R$29 for HS15P USD 1=R$2.2 HIH ~=136.36 (with tax :(, and tax~= 18%!!!) i don't know why but honneywell here in brasil is about 100% more expensive than another country :/
Paul Alfille escreveu: > Aagelectronica sells a humidity sensor for $44, and Hobbyboards for > $48. Also, the humirel part might be cheaper, and is supported. > > Still, if you build a circuit for the HS15p, we'll try to support it. > > Paul > > On 1/10/07, *Roberto Spadim* <[EMAIL PROTECTED] > <mailto:[EMAIL PROTECTED]>> wrote: > > in USA you wil have no problem with honneywell, but in brazil: hih > ~$300, hs15p~$29 got the main problem?! :) > i think that using an external source voltage could help, dont? we > have > an device that can read current volt and temperature in same > package (i > don't know if read current and volt at same time it should.. or we > will > not work with external souce) > ds2438 i think that's it, i don't remember now, but it have 2.4V-10V > input ADC and an current input ADC > > ziggy escreveu: > > I've used the HS15P before on a PIC. It's not going to be easy > to interface to 1 wire. The big requirement is that the sensor can > *not* have a standing DC voltage across it, or you will destroy > the sensor. As it says in the datasheet: AC voltage 50 Hz to 1kHz. > You may be able to place this across the outputs of a DS2406 and > toggle the PIO states emulating AC. Then with the proper side in > high state, make a measurement with an ADC and finally turn off > both PIOs on the 2406 leaving the sensor with no applied voltage. > You would have to place a resistor in series with the sensor, 27k > or so, to make the voltage divider for the ADC. Don't know if the > 2406 will actually work properly for this, it's just an idea. > > > > In ASCII art (fixed width font) it would look something like: > > > > ADC---------------- > > | > > HS15P | 27K > > PIO-A ---/\/\/\/----/\/\/\/---| > > PIO-B ------------------------| > > > > Simplest solution is still to use a linear output sensor that > you can measure with one of the ADC chips. This could be a > Honeywell HIH-3610/HIH-4000, a Humirel HTM1735, an Ohmic HC-610, > etc. These also have better accuracy (most +/- 2%) than the HS15 > (+/- 5%). > > > > Paul > > > > > > On Wed, 10 Jan 2007 10:10:16 -0500, "Paul Alfille" > <[EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]>> wrote: > > > >> Interesting sensor. Is it part of a 1-wire circuit, or were you > going yo > >> try > >> to construct one? > >> > >> The give "Typical response curves" -- but we'd need to do some > >> curvefitting > >> to make a formula. > >> > >> Paul > >> > >> On 1/10/07, Roberto Spadim <[EMAIL PROTECTED] > <mailto:[EMAIL PROTECTED]>> wrote: > >> > >>> founded! > >>> http://www.thermometrics.com/assets/images/hs1215p.pdf > >>> now i'm trying to learn how to read :) > >>> maybe anyone can put it in owfs for us :) with some ad convert > >>> > >>> Roberto Spadim escreveu: > >>> > >>>> hi i'm with an KEYSTONE THERMOMETRICS - HSP15P > >>>> Humidity Sensor, but i don't know how it works :/ anyone have the > >>>> datasheet or worked with it? maybe putting it with owfs could > help, > >>>> > >> it's > >> > >>>> an verrrry cheap humidity sensor > >>>> tahnkx > >>>> > >>>> > >>>> > >>>> > >> > ------------------------------------------------------------------------- > > >> > >>>> Take Surveys. Earn Cash. Influence the Future of IT > >>>> Join SourceForge.net's Techsay panel and you'll get the chance to > >>>> > >> share > >> > >>> your > >>> > >>>> opinions on IT & business topics through brief surveys - and > earn cash > >>>> > >>>> > >> > http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV > > <http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV> > >> > >>>> _______________________________________________ > >>>> Owfs-developers mailing list > >>>> [email protected] > <mailto:[email protected]> > >>>> https://lists.sourceforge.net/lists/listinfo/owfs-developers > <https://lists.sourceforge.net/lists/listinfo/owfs-developers> > >>>> > >>>> Esta mensagem foi verificada pelo E-mail Protegido Terra. > >>>> Scan engine: McAfee VirusScan / Atualizado em 09/01/2007 / > Versão: > >>>> > >>> 5.1.00/4935 > >>> > >>>> Proteja o seu e-mail Terra: http://mail.terra.com.br/ > >>>> > >>>> > >>>> > >>>> > >>>> > >>> > >>> > >>> > >> > ------------------------------------------------------------------------- > >> > >>> Take Surveys. Earn Cash. Influence the Future of IT > >>> Join SourceForge.net's Techsay panel and you'll get the chance > to share > >>> your > >>> opinions on IT & business topics through brief surveys - and > earn cash > >>> > >>> > >> > http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV > > <http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV> > >> > >>> _______________________________________________ > >>> Owfs-developers mailing list > >>> [email protected] > <mailto:[email protected]> > >>> https://lists.sourceforge.net/lists/listinfo/owfs-developers > >>> > >>> > >> > > > > > > > ------------------------------------------------------------------------- > > > Take Surveys. Earn Cash. Influence the Future of IT > > Join SourceForge.net's Techsay panel and you'll get the chance > to share your > > opinions on IT & business topics through brief surveys - and > earn cash > > > http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV > > <http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV> > > _______________________________________________ > > Owfs-developers mailing list > > [email protected] > <mailto:[email protected]> > > https://lists.sourceforge.net/lists/listinfo/owfs-developers > > > > Esta mensagem foi verificada pelo E-mail Protegido Terra. > > Scan engine: McAfee VirusScan / Atualizado em 10/01/2007 / > Vers�o: 5.1.00/4936 > > Proteja o seu e-mail Terra: http://mail.terra.com.br/ > > > > > > ------------------------------------------------------------------------- > Take Surveys. Earn Cash. Influence the Future of IT > Join SourceForge.net's Techsay panel and you'll get the chance to > share your > opinions on IT & business topics through brief surveys - and earn cash > http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV > > <http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV> > _______________________________________________ > Owfs-developers mailing list > [email protected] > <mailto:[email protected]> > https://lists.sourceforge.net/lists/listinfo/owfs-developers > > > ------------------------------------------------------------------------ > Esta mensagem foi verificada pelo E-mail Protegido Terra > <http://mail.terra.com.br/>. > Scan engine: McAfee VirusScan / Atualizado em 10/01/2007 / Versão: > 5.1.00/4936 > Proteja o seu e-mail Terra: http://mail.terra.com.br/ > ------------------------------------------------------------------------ > > ------------------------------------------------------------------------- > Take Surveys. Earn Cash. Influence the Future of IT > Join SourceForge.net's Techsay panel and you'll get the chance to share your > opinions on IT & business topics through brief surveys - and earn cash > http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV > ------------------------------------------------------------------------ > > _______________________________________________ > Owfs-developers mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/owfs-developers > ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys - and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV _______________________________________________ Owfs-developers mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/owfs-developers
