I changed the "channel" from A to C on both units and seem to be having many fewer data drop-outs with the Li batteries still in.
It is a bit odd, but I am guessing there is some interference on the A channel that was messing with my reception. I wonder if the channels are just a code that is transmitted on a set frequency or if they are truly different channels in frequency. On Monday, January 27, 2020 at 11:12:08 PM UTC-6, Andrew Milner wrote: > > well u could check by just changing the batteries for alkaline and see if > the issue goes away again!! > > > > On Tuesday, 28 January 2020 06:13:28 UTC+2, Drew Latta wrote: >> >> I am getting a lot of no data error messages in the log, like: >> >> Jan 27 01:56:00 raspberrypi weewx[565]: acurite: R1: ignoring stale data >> (rssi indicates no communication from sensors): 01 c8 7c 71 00 00 00 03 00 >> 00 >> Jan 27 01:56:18 raspberrypi weewx[565]: acurite: R1: ignoring stale data >> (rssi indicates no communication from sensors): 01 c8 7c 71 00 00 00 03 00 >> 00 >> .... >> >> Yes, I agree that the barometric pressure bit is weird. >> >> However, the AcuRite display unit is also "searching for a signal" when >> it isn't working correctly as there is a signal icon on the display that is >> flashing rather than showing bars. So that seems to suggest to me that it >> is a true signal issue. >> >> Based on the Energizer datasheet, the lithium primary batteries are >> supposed to have an nominal voltage of 1.5 V. At 100 mA drain they have a >> pretty flat discharge curve at 1.4 V for a long time. I don't think it is >> undervoltage from the batteries. >> >> One thought is that the extra metal (Li) in there is causing some signal >> propagation issue, but it doesn't seem to explain the day/night difference. >> Seems like a stretch. >> >> Drew >> >> On Monday, January 27, 2020 at 2:10:30 PM UTC-6, p q wrote: >>> >>> I have a similar setup. >>> >>> Here's what's weird. The barometric pressure is also from the display >>> unit (I'm pretty sure) and it's dropping out too. >>> >>> Can you check to see what's in your database? Is the problem in the >>> display or in recording the data? Are you getting any error messages in the >>> log? >>> >>> I don't think switching settings is going to help, but I don't know. >>> >>> Lithium batteries used to be 1.3 volts vs 1.5 volts for alkaline. I >>> don't know if yours are that way. It might even be worse than nominal >>> voltage when it's cold. >>> >>> On Mon, Jan 27, 2020 at 10:34 AM Drew Latta <[email protected]> wrote: >>> >>>> Hi WeeWx users, >>>> >>>> I have a working WeeWx install on a Pi Zero W connected to an AcuRite >>>> 01036 via USB. >>>> >>>> I have been having some issues with data dropout during the daytime. >>>> Which you can see here: http://173.29.136.66/weewx/ >>>> >>>> My assumption is that because the data for inside temperature are being >>>> shown that this is a communication issue between the AcuRite display and >>>> the 5-in-1 station rather than the AcuRite display and the Pi. >>>> >>>> The interesting twist here is that the data drop-outs are now worse >>>> since I put in 4 new lithium AA batteries in the 5-in-1 to replace 4 new >>>> alkaline AA's I had in it. I generally use lithium AA's in the 5-in-1 >>>> since >>>> we often get winter lows < -20C (-5F). >>>> >>>> Any thought on why lithium batteries would degrade the signal quality >>>> during the daytime worse than alkaline batteries? >>>> >>>> Does switching channels from A to B or C ever help this problem? >>>> >>>> Thanks for your thoughts, >>>> >>>> Drew >>>> >>>> -- >>>> 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/b7612e87-62b8-4f66-bd31-66bddae7d79b%40googlegroups.com >>>> >>>> <https://groups.google.com/d/msgid/weewx-user/b7612e87-62b8-4f66-bd31-66bddae7d79b%40googlegroups.com?utm_medium=email&utm_source=footer> >>>> . >>>> >>> >>> >>> -- >>> Peter Quinn >>> (415)794-2264 >>> >> -- 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/4555c373-dfa3-49a5-9438-308dadd8577e%40googlegroups.com.
