Thanks for your reply. The weather station consists of an arduino microcontroller reading sensors and sending data to the pi, which places it in a CSV file. I'm using fileparse in weewx to read the file. You were correct in your assessment! I looked through the CSV file and found entries with a 'nan' value for my second temperature sensor, which was bad! Replacing the sensor resolved the issue.
For future reference, what information should I include in a post like this? Thanks again! On Thursday, June 25, 2020 at 4:53:39 PM UTC-4, Ron Walker wrote: > > Hi All, > > I am using weewx 3.9.1 on a Raspberry pi. Up until yesterday, the system > was running fine. I had stopped the pi yesterday to move it to a new > location. Today when I attempted to start the program, I get the following > error and then it quits. Any help pointing me in the right direction to a > resolution would be greatly appreciated! > > Error output:. > > Traceback (most recent call last): > File "/usr/bin/weewxd", line 64, in <module> > weewx.engine.main(options, args) > File "/usr/share/weewx/weewx/engine.py", line 890, in main > engine.run() > File "/usr/share/weewx/weewx/engine.py", line 191, in run > self.dispatchEvent(weewx.Event(weewx.NEW_LOOP_PACKET, packet=packet)) > File "/usr/share/weewx/weewx/engine.py", line 224, in dispatchEvent > callback(event) > File "/usr/share/weewx/weewx/engine.py", line 546, in new_loop_packet > self.accumulator.addRecord(event.packet, add_hilo=self.loop_hilo) > File "/usr/share/weewx/weewx/accum.py", line 256, in addRecord > func(self, record, obs_type, add_hilo, weight) > File "/usr/share/weewx/weewx/accum.py", line 315, in add_value > self[obs_type].addSum(val, weight=weight) > File "/usr/share/weewx/weewx/accum.py", line 93, in addSum > raise ValueError("accum: ScalarStats.addSum expected float or int, got > %s" % val) > ValueError: accum: ScalarStats.addSum expected float or int, got nan > > > Thanks in advance!! > -- 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 weewx-user+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/weewx-user/6eab7637-65be-4971-b0a2-19bead2b98fao%40googlegroups.com.