Re: [Paparazzi-devel] SHT75 Issues

[Christoph Niemann]

Hi Martin,

thank you very much for your quik help. That worked for me. I connected the SHT 
to the ADC1 connector. In the datasheet was the information, that the SHT could 
also be used on the I2C beside other I2C devices that led me to the conclusion, 
that it would be enough to connect it to the I2C. A little bit stupid, I know.

Thank you very much

Christoph
-------- Original-Nachricht --------
> Datum: Fri, 27 May 2011 23:21:28 +0200
> Von: Martin Mueller <address@hidden>
> An: address@hidden
> Betreff: Re: [Paparazzi-devel] SHT75 Issues

> Hi Christoph,
> 
> the SHT75 does not have I2C, it uses some similar proprietary protocol. 
> Use humid_sht_i2c for the true-I2C SHT25 only.
> 
> The humid_sht GPIO pins default to the ADC1 connector (see humid_sht.h). 
> You need to add a 10k pull-up if ADC1 is used (or redefine the GPIO pins 
> to use the I2C connector that have pull-ups).
> 
> Martin
> 
> On 27.05.2011 22:25, Christoph Niemann wrote:
> > Hi everyone,
> >
> > currently I'm trying to get a SHT75 humidity Sensor to work. No succes
> > so far. I have used the humid_sht and humid_sht_i2c module. I also tried
> > it with adding the recommented 10K pullup into the DATA-line. When using
> > the i2c module, the only value that is send down is 0 for serial1 and
> > serial2. If I use the humid_sht module the humid is 0.1 and doesn't
> > change and the temp is -39 deg. Those values also appear, if no SHT is
> > plugged. Does anyone the SHT with the current git version, or is my SHT
> > broken (I read they are fragile). If it is broken, wich humdity-sensor
> > would you use?
> >
> > Thank you for your help.
> >
> > Christoph
> >
> > _______________________________________________
> > Paparazzi-devel mailing list
> > address@hidden
> > https://lists.nongnu.org/mailman/listinfo/paparazzi-devel
> 
> 
> _______________________________________________
> Paparazzi-devel mailing list
> address@hidden
> https://lists.nongnu.org/mailman/listinfo/paparazzi-devel