Hi,
Managed to find a log of a failure.

Sep 28 19:07:05 raspberrypi weewx[2083]: te923: read: address 0x020001
Sep 28 19:07:05 raspberrypi weewx[2083]: te923: read: 5a 81 a1 70 aa 0a aa 
aa 0a aa aa 0a aa 52 c1 08 aa 0a aa ff ff 9d 3d 03 ee ee ee ee ee ee 07 ee 
00 db
Sep 28 19:07:05 raspberrypi weewx[2083]: te923: read: address 0x00004c
Sep 28 19:07:05 raspberrypi weewx[2083]: te923: read: 5a 7f ff ff ff ff ff 
ff ff ff ff ff ff ff 10 c6 00 07 33 ff ff 39 28 18 22 98 3d 98 3d c0 3d d5 
3d f9
Sep 28 19:07:15 raspberrypi weewx[2083]: te923: read: address 0x020001
Sep 28 19:07:16 raspberrypi weewx[2083]: te923: read: 5a 81 a1 70 aa 0a aa 
aa 0a aa aa 0a aa 52 c1 08 aa 0a aa ff ff 9d 3d 03 ee ee ee ee ee ee 07 ee 
00 db
Sep 28 19:07:16 raspberrypi weewx[2083]: te923: read: address 0x00004c
Sep 28 19:07:16 raspberrypi weewx[2083]: te923: read: 5a 7f ff ff ff ff ff 
ff ff ff ff ff ff ff 10 c6 00 07 33 ff ff 39 28 18 22 98 3d 98 3d c0 3d d5 
3d f9
Sep 28 19:07:26 raspberrypi weewx[2083]: te923: read: address 0x020001
Sep 28 19:07:26 raspberrypi weewx[2083]: te923: read: 5a 81 a1 70 aa 0a aa 
aa 0a aa aa 0a aa 52 c1 08 aa 0a aa ff ff 9d 3d 03 ee ee ee ee ee ee 07 ee 
00 db
Sep 28 19:07:26 raspberrypi weewx[2083]: te923: read: address 0x00004c
Sep 28 19:07:26 raspberrypi weewx[2083]: te923: read: 5a 7f ff ff ff ff ff 
ff ff ff ff ff ff ff 10 c6 00 07 33 ff ff 39 28 18 22 98 3d 98 3d c0 3d d5 
3d f9
Sep 28 19:07:33 raspberrypi kernel: [87218.944317] usb 1-1.2.1.2: USB 
disconnect, device number 8
Sep 28 19:07:33 raspberrypi rsyslogd-2007: action 'action 17' suspended, 
next retry is Wed Sep 28 19:09:03 2016 [try http://www.rsyslog.com/e/2007 ]
Sep 28 19:07:33 raspberrypi kernel: [87219.193350] usb 1-1.2.1.2: new 
low-speed USB device number 9 using dwc_otg
Sep 28 19:07:33 raspberrypi kernel: [87219.299415] usb 1-1.2.1.2: New USB 
device found, idVendor=1130, idProduct=6801
Sep 28 19:07:33 raspberrypi kernel: [87219.299456] usb 1-1.2.1.2: New USB 
device strings: Mfr=0, Product=1, SerialNumber=0
Sep 28 19:07:33 raspberrypi kernel: [87219.299479] usb 1-1.2.1.2: Product:  
Sep 28 19:07:33 raspberrypi kernel: [87219.318477] hid-generic 
0003:1130:6801.0002: hiddev0,hidraw0: USB HID v1.10 Device [ ] on 
usb-20980000.usb-1.2.1.2/input0
Sep 28 19:07:33 raspberrypi mtp-probe: checking bus 1, device 9: 
"/sys/devices/platform/soc/20980000.usb/usb1/1-1/1-1.2/1-1.2.1/1-1.2.1.2"
Sep 28 19:07:33 raspberrypi mtp-probe: bus: 1, device: 9 was not an MTP 
device
Sep 28 19:07:36 raspberrypi weewx[2083]: te923: read: address 0x020001
Sep 28 19:07:36 raspberrypi weewx[2083]: te923: Failed attempt 1 of 5 to 
read data: error sending control message: No such device
Sep 28 19:07:36 raspberrypi weewx[2083]: te923: Waiting 3 seconds before 
retry
Sep 28 19:07:39 raspberrypi weewx[2083]: te923: Failed attempt 2 of 5 to 
read data: error sending control message: No such device
Sep 28 19:07:39 raspberrypi weewx[2083]: te923: Waiting 3 seconds before 
retry
Sep 28 19:07:42 raspberrypi weewx[2083]: te923: Failed attempt 3 of 5 to 
read data: error sending control message: No such device
Sep 28 19:07:42 raspberrypi weewx[2083]: te923: Waiting 3 seconds before 
retry
Sep 28 19:07:45 raspberrypi weewx[2083]: te923: Failed attempt 4 of 5 to 
read data: error sending control message: No such device
Sep 28 19:07:45 raspberrypi weewx[2083]: te923: Waiting 3 seconds before 
retry
Sep 28 19:07:48 raspberrypi weewx[2083]: te923: Failed attempt 5 of 5 to 
read data: error sending control message: No such device
Sep 28 19:07:48 raspberrypi weewx[2083]: te923: Waiting 3 seconds before 
retry
Sep 28 19:07:51 raspberrypi weewx[2083]: engine: Main loop exiting. 
Shutting engine down.
Sep 28 19:07:51 raspberrypi weewx[2083]: engine: Shutting down StdReport 
thread
Sep 28 19:07:51 raspberrypi weewx[2083]: engine: StdReport thread has been 
terminated
Sep 28 19:07:51 raspberrypi weewx[2083]: restx: Shut down Wunderground-PWS 
thread.
Sep 28 19:07:51 raspberrypi weewx[2083]: te923: release interface failed: 
could not release intf 0: No such device
Sep 28 19:07:51 raspberrypi weewx[2083]: engine: Caught WeeWxIOError: Read 
failed after 5 tries
Sep 28 19:07:51 raspberrypi weewx[2083]:     ****  Waiting 60 seconds then 
retrying...
Sep 28 19:08:52 raspberrypi weewx[2083]: engine: retrying...
Sep 28 19:08:52 raspberrypi weewx[2083]: engine: Using configuration file 
/etc/weewx/weewx.conf
Sep 28 19:08:52 raspberrypi weewx[2083]: engine: Initializing engine
Sep 28 19:08:52 raspberrypi weewx[2083]: engine: Loading station type TE923 
(weewx.drivers.te923)
Sep 28 19:08:52 raspberrypi weewx[2083]: te923: driver version is 0.19
Sep 28 19:08:52 raspberrypi weewx[2083]: te923: polling interval is 10
Sep 28 19:08:52 raspberrypi weewx[2083]: te923: observation map is 
{'bat_1': 'outBatteryStatus', 'bat_3': 'extraBatteryStatus2', 'bat_2': 
'extraBatteryStatus1', 'bat_5': 'extraBatteryStatus4', 'bat_4': 
'extraBatteryStatus3', 'bat_wind': 'windBatteryStatus', 't_in': 'inTemp', 
'link_rain': 'rainLinkStatus', 't_1': 'extraTemp4', 'h_in': 'inHumidity', 
'h_3': 'extraHumid3', 'h_1': 'extraHumid4', 'h_5': 'extraHumid1', 'h_2': 
'extraHumid3', 'h_4': 'outHumidity', 't_5': 'extraTemp1', 'link_2': 
'extraLinkStatus1', 'link_uv': 'uvLinkStatus', 'link_wind': 
'windLinkStatus', 'uv': 'UV', 'bat_uv': 'uvBatteryStatus', 'link_5': 
'extraLinkStatus4', 'bat_rain': 'rainBatteryStatus', 'link_3': 
'extraLinkStatus2', 't_2': 'extraTemp2', 'link_1': 'outLinkStatus', 't_4': 
'outTemp', 't_3': 'extraTemp3', 'link_4': 'extraLinkStatus3'}
Sep 28 19:08:52 raspberrypi weewx[2083]: te923: Found device on USB bus=001 
device=009
Sep 28 19:08:52 raspberrypi weewx[2083]: te923: read: address 0x0000fc
Sep 28 19:08:53 raspberrypi weewx[2083]: engine: Unable to load driver: 
could not release intf 0: No such device
Sep 28 19:08:53 raspberrypi weewx[2083]:     ****  Exiting...
Sep 28 19:09:27 raspberrypi systemd[1]: Starting Cleanup of Temporary 
Directories...
Sep 28 19:09:27 raspberrypi rsyslogd-2007: action 'action 17' suspended, 
next retry is Wed Sep 28 19:10:57 2016 [try http://www.rsyslog.com/e/2007 ]
Sep 28 19:09:27 raspberrypi systemd[1]: Started Cleanup of Temporary 
Directories.
Sep 28 19:17:01 raspberrypi rsyslogd-2007: action 'action 17' suspended, 
next retry is Wed Sep 28 19:18:31 2016 [try http://www.rsyslog.com/e/2007 ]
Sep 28 19:17:01 raspberrypi CRON[8801]: (root) CMD (   cd / && run-parts 
--report /etc/cron.hourly)
Sep 28 19:50:38 raspberrypi dhcpcd[408]: wlan0: carrier lost
Sep 28 19:50:38 raspberrypi rsyslogd-2007: action 'action 17' suspended, 
next retry is Wed Sep 28 19:52:08 2016 [try http://www.rsyslog.com/e/2007 ]
Sep 28 19:50:38 raspberrypi wpa_supplicant[501]: wlan0: 
CTRL-EVENT-DISCONNECTED bssid=74:da:38:1c:20:f4 reason=4 locally_generated=1
Sep 28 19:50:38 raspberrypi kernel: [89804.507825] cfg80211: World 
regulatory domain updated:
Sep 28 19:50:38 raspberrypi kernel: [89804.507870] cfg80211:  DFS Master 
region: unset





On Sunday, 25 September 2016 14:03:43 UTC+1, Tom Keffer wrote:
>
> Weewx versions 3.4 and later have included a delay to wait until the 
> system clock shows a time after 1 Jan 2000.
>
> If you are still having problems, a log snippet would be helpful.
>
> -tk
>
> On Sun, Sep 25, 2016 at 3:35 AM, Andy Harrold <[email protected] 
> <javascript:>> wrote:
>
>> Ok, Weewx run for a lot longer this time around and appears to have been 
>> an issue with Fake Clock.
>> Next time Wunderground reported losing connection to my weather station I 
>> checked the logs. Seems something had caused a reboot of my Pi and as 
>> advised above when it restarted the date/time reverted back to 1970. Not 
>> sure if weewx tried to start up during this system time but it still failed 
>> to report to wunderground even after the date/time sorted itself. Maybe I 
>> need the weewx to delay its startup until the date/time has fixed itself 
>> after reboot. Whats your opinion?
>>
>>
>> On Wednesday, 21 September 2016 22:20:12 UTC+1, Andy Harrold wrote:
>>>
>>> Thanks. Have removed the Fake Clock and associated data. Will stop/Start 
>>> Weewx and see what happens.
>>>
>>> On Wednesday, 21 September 2016 16:43:32 UTC+1, Tom Keffer wrote:
>>>>
>>>> Looks like your RPi decided to reboot itself for some reason. 
>>>>
>>>> One problem is that weewx is starting up before the system clock is 
>>>> being set by NTP. You should remove module fake-hwclock. See the Wiki 
>>>> Running weewx on a Raspberry Pi 
>>>> <https://github.com/weewx/weewx/wiki/Raspberry%20Pi>.
>>>>
>>>> In any case, for whatever reason, weewx was unable to load the driver. 
>>>> This could be related to the clock problem, but I doubt it. Fix the clock 
>>>> problem and then see what happens.
>>>>
>>>> -tk
>>>>
>>>> On Wed, Sep 21, 2016 at 8:06 AM, Andy Harrold <
>>>> [email protected]> wrote:
>>>>
>>>>> After finally getting my system up and running I keep getting 
>>>>> notifications from Wunderground that my system has stopped reporting.
>>>>> A quick stop and start of the Weewx service sorts that out until the 
>>>>> next time, usually happens around 2-3 times a day.
>>>>> I set Debug on today and looking at the Syslog & Debug log everything 
>>>>> seems to go haywire around 13:16. 
>>>>>
>>>>> I've attached the Syslog & Debug file, if you want me to just cut & 
>>>>> Paste in here I can, just ask.
>>>>>
>>>>> I think it might have something to do with my wireless, or maybe the 
>>>>> USB interface.
>>>>>
>>>>> Thanks
>>>>> Andy
>>>>>
>>>>> -- 
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>>>>
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>

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