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.
