I suspect 'rain' occasionally has the value 'None', which cannot be compared to zero. Try this expression instead
expression = 'rain is not None and rain > 0.0' -tk On Sat, May 9, 2020 at 9:38 PM Ian Prescott <[email protected]> wrote: > Hi I have a fineoffset usb weather station which has been running raspbian > stretch and weewx 3.9 ok and using alarm.py with no issues. > For weewx 4 I decided to start from fresh, new sd card, new raspbian > buster, and a fresh weewx install. > After a of couple learner hicups I now have weewx 4 using buster and > python 3 up and running. > However I have hit a wall with alarm.py > If I use expression = "rain > 0.0" then weewx crashes. > If I use expression = "outTemp < 30.0" then weewx keeps running but no > email is ever received. > > So after a search of the forum I found this command > sudo PYTHONPATH=/usr/share/weewx python3 /usr/share/weewx/user/alarm.py > /etc/weewx/weewx.conf > This ran ok and I got an email > > I have attached my weewx.conf and the log from when I start weewx to when > it crashes using expression = "rain > 0.0". > I have no idea how to get any useful info regarding expression = "outTemp > < 30.0", there doesn't appear to be anything unusual in the log. > > Thanks > > and again a fantastic program and a great learning experience. > > -- > 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/ca5c79a5-c6bc-40d3-b0a0-1915d2929135%40googlegroups.com > <https://groups.google.com/d/msgid/weewx-user/ca5c79a5-c6bc-40d3-b0a0-1915d2929135%40googlegroups.com?utm_medium=email&utm_source=footer> > . > -- 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/CAPq0zEAFg%3DYBRvSkEV61nj77n%3DB%2BFmX_hw507%2BmXKv8%3D0d7cKw%40mail.gmail.com.
