CWOP wants "altimeter" pressure, that is, pressure corrected for altitude only (not temperature). The Ultimeter 2100 supplies only barometer. (See the Wiki article *Barometer, pressure, and altitude <https://github.com/weewx/weewx/wiki/Barometer,-pressure,-and-altimeter>* for the difference). So, the altimeter pressure must be calculated in software.
This requires pressure, temperature, and, unfortunately, humidity. So, without the last, it cannot be calculated. -tk On Wed, Jul 3, 2019 at 3:48 AM prweather <[email protected]> wrote: > I am using a Peet Bros. 2100 to transfer data to CWOP > <http://www.findu.com/cgi-bin/wxpage.cgi?EW0483>. I do not have a > humidity/dp sensor only a temp sensor. Everything is working fine except no > barometer data being sent. My personal website > <http://www.perryriggle.com> is showing barometer data fine. > Using: > > - Python 2.7.15 > - weewx 3.9.1 > > I downloaded weewx_3.9.1-1_all.deb > > - xubuntu 19.04 64bit > > > Looking at the data that is being sent to CWOP from their site it shows: > EW0483>APRS,TCPXX*,qAX,CWOP-4:@022050z3943.87N > /08609.37W_262/002g005t090r000p000P000b.....h...weewx-3.9.1-Ultimeter > > Looking at restx.py indicates to me that no baro data is getting picked up > by weewx and sending the string b..... to CWOP > # Barometer: > _baro = record.get('altimeter') > if _baro is None: > _baro_str = "b....." > else: > # While everything else in the CWOP protocol is in US > Customary, > # they want the barometer in millibars. > _baro_vt = weewx.units.convert((_baro, 'inHg', > 'group_pressure'), > 'mbar') > _baro_str = "b%05d" % (_baro_vt[0] * 10.0) > > Any help would be appreciated. Thank you. > > -- > You received this message because you are subscribed to the Google Groups > "weewx-user" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To view this discussion on the web visit > https://groups.google.com/d/msgid/weewx-user/5a6b199d-dcac-4f52-ad33-85ba5c83a223%40googlegroups.com > <https://groups.google.com/d/msgid/weewx-user/5a6b199d-dcac-4f52-ad33-85ba5c83a223%40googlegroups.com?utm_medium=email&utm_source=footer> > . > For more options, visit https://groups.google.com/d/optout. > -- You received this message because you are subscribed to the Google Groups "weewx-user" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/weewx-user/CAPq0zEBY0CtzmGVotTtoXAYCzCCypO4TS3X-_yhaKKznbpi-ug%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
