One other thing to try: reseating the logger. -tk
On Mon, Dec 19, 2016 at 11:53 AM, Ford Donald <[email protected]> wrote: > A) I have not, but can give it a try > B) Yes, the one included with the RPi, a 2.5A wall wort from Canakit > > > On Monday, December 19, 2016 at 1:47:40 PM UTC-6, Andrew Milner wrote: >> >> a) have you tried connecting the envoy to the rpi3 via a powered usb hub >> rather than the rpi usb port? >> b) are you using a GOOD rpi3 power supply? >> >> >> >> >> On Monday, 19 December 2016 21:43:27 UTC+2, Ford Donald wrote: >> >>> I'm running weewx latest on a series 3 raspberrypi, using Davis Weather >>> Envoy (fw 3.15) to record and transfer data. Connection is USB, using the >>> factory cable with added iron chokes at both ends. Station is VP2+ wireless. >>> >>> Booting the RPi up works fine and weewx starts normally. But, 100% of >>> the time the data collection fails to start, usually with this: >>> >>> Dec 19 13:33:00 raspi-weather weewx[1548]: engine: Starting up weewx >>> version 3.6.2 >>> Dec 19 13:33:00 raspi-weather weewx[1548]: engine: Clock error is -24.96 >>> seconds (positive is fast) >>> Dec 19 13:33:00 raspi-weather weewx[1548]: vantage: Clock set to >>> 2016-12-19 13:33:01 CST (1482175981) >>> Dec 19 13:33:07 raspi-weather weewx[1548]: vantage: DMPAFT try #1; >>> error: Time out in get_data_with_crc16 >>> Dec 19 13:33:20 raspi-weather weewx[1548]: vantage: DMPAFT try #2; >>> error: Time out in get_data_with_crc16 >>> Dec 19 13:33:32 raspi-weather weewx[1548]: vantage: DMPAFT try #3; >>> error: Time out in get_data_with_crc16 >>> Dec 19 13:33:44 raspi-weather weewx[1548]: vantage: DMPAFT try #4; >>> error: Time out in get_data_with_crc16 >>> Dec 19 13:33:44 raspi-weather weewx[1548]: vantage: DMPAFT max tries (4) >>> exceeded. >>> Dec 19 13:33:44 raspi-weather weewx[1548]: engine: Caught WeeWxIOError: >>> Max tries exceeded while getting archive data. >>> Dec 19 13:33:44 raspi-weather weewx[1548]: **** Waiting 60 seconds then >>> retrying... >>> >>> I've followed the guidance online about changing cables and adding >>> chokes. The original Envoy cable tends to be the best. Envoy is powered by >>> line power, so battery power isn't an issue. >>> >>> I can usually get things going eventually if I stop and start weewx >>> repeatedly until the errors clear and WUnderground rapidfire starts to >>> flow. If I leave it along after that it does pretty well. But, security >>> patches come along and after patching this process starts again. >>> >>> Otherwise, normal operation looks like this: >>> >>> Dec 19 13:41:05 raspi-weather weewx[1548]: engine: Starting main packet >>> loop. >>> Dec 19 13:41:10 raspi-weather weewx[1548]: vantage: LOOP try #1; error: >>> Expected to read 99 chars; got 0 instead >>> >>> Thanks for reading, >>> Ford >>> >>> >>> -- > 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]. > 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]. For more options, visit https://groups.google.com/d/optout.
