Congratulations! Looks like it was a power supply problem.

USB power supplies fail. I had one that would show +5V under no load, but
it would sag to near nothing with just a modest load.

On Mon, Jan 28, 2019 at 5:26 PM monmul <[email protected]> wrote:

> It is working again!.....This time I used both official power units...one
> to power the Pi and one to power the hub.....
>
> On Tuesday, 29 January 2019 13:34:45 UTC+13, Thomas Keffer wrote:
>>
>> Then you definitely have a connectivity problem!
>>
>> -tk
>>
>> On Mon, Jan 28, 2019 at 4:32 PM monmul <[email protected]> wrote:
>>
>>> Welcome to minicom 2.7
>>>
>>> OPTIONS: I18n
>>> Compiled on Apr 22 2017, 09:14:19.
>>> Port /dev/ttyUSB0, 13:15:39
>>>
>>> Press CTRL-A Z for help on special keys
>>>
>>> Even after lots or <enter>s nothing happens on TEST
>>>
>>> Similarly for screen.......
>>>
>>> On Tuesday, 29 January 2019 13:22:19 UTC+13, Thomas Keffer wrote:
>>>>
>>>> The "establishing connectivity" instructions don't mention it, but be
>>>> sure to hit <enter> a few times before typing TEST.
>>>>
>>>> On Mon, Jan 28, 2019 at 4:11 PM monmul <[email protected]> wrote:
>>>>
>>>>> Tried both screen and minicom.....no TEST echo back....so must be
>>>>> hardware....but totally flummoxed as all hardware (apart from Rpi) has 
>>>>> been
>>>>> replaced.....have another pi on order....but in the meantime I guess I 
>>>>> will
>>>>> go back to scratch and start all over again....at least it has worked
>>>>> before with this set up....maybe something has become corrupted!
>>>>>
>>>>>
>>>>> On Tuesday, 29 January 2019 12:11:06 UTC+13, Thomas Keffer wrote:
>>>>>>
>>>>>> Try to communicate directly with the Envoy, without going through
>>>>>> WeeWX. For how to do this, see the section *Establishing
>>>>>> connectivity
>>>>>> <http://weewx.com/docs/usersguide.htm#Establishing_connectivity>* in
>>>>>> the User's Guide. If you are unable to do that, then this is definitely a
>>>>>> hardware problem.
>>>>>>
>>>>>> -tk
>>>>>>
>>>>>> On Mon, Jan 28, 2019 at 2:41 PM dunbrokin <[email protected]> wrote:
>>>>>>
>>>>>>> Thanks, but no I don't ....I use VNC.
>>>>>>>
>>>>>>> On Tue, Jan 29, 2019 at 11:35 AM <[email protected]> wrote:
>>>>>>>
>>>>>>>> Just a quick question. Do you have a monitor (like the Pi 7 in
>>>>>>>> touch screen) attached that is running off the same power supply as 
>>>>>>>> the Pi?
>>>>>>>> I had a setup like that which used a splitter to power both the 
>>>>>>>> monitor and
>>>>>>>> Pi from one power pack. My setup kept complaining of undervolting 
>>>>>>>> until I
>>>>>>>> removed the splitter and plugged the monitor and pi each into their own
>>>>>>>> power supply.
>>>>>>>>
>>>>>>>> phil
>>>>>>>>
>>>>>>>> On Monday, January 28, 2019 at 3:41:15 PM UTC-5, monmul wrote:
>>>>>>>>>
>>>>>>>>> I have replaced the power unit, taken it off the power strip an
>>>>>>>>> plugged both it and the Vanatage into the mains. I have replaced the
>>>>>>>>> powered hub (official RPi one...with another official RPi one) ...and 
>>>>>>>>> here
>>>>>>>>> is what I am getting.......very dispirited! I have another Davis 
>>>>>>>>> Weather
>>>>>>>>> Envoy which I will soon substitute for the one I am currently 
>>>>>>>>> using.....but
>>>>>>>>> nothing seems to make a difference and the Envoy just will not wake 
>>>>>>>>> up!
>>>>>>>>>
>>>>>>>>> pi@raspberrypi:~ $ sudo tail -f /var/log/syslog
>>>>>>>>> Jan 29 09:14:05 raspberrypi udisksd[766]: Mounted /dev/sda1 at
>>>>>>>>> /media/pi/e78ab10a-51d2-40f0-aa6d-5f2d2b0f27b7 on behalf of uid 1000
>>>>>>>>> Jan 29 09:14:05 raspberrypi vncserver-x11[453,root]:
>>>>>>>>> SPrintConnMgr: Failed to add printer: server-error-service-unavailable
>>>>>>>>> Jan 29 09:14:07 raspberrypi dhcpcd[338]: wlan0: no IPv6 Routers
>>>>>>>>> available
>>>>>>>>> Jan 29 09:14:10 raspberrypi kernel: [   22.871754] Voltage
>>>>>>>>> normalised (0x00000000)
>>>>>>>>> Jan 29 09:14:12 raspberrypi weewx[506]: vantage: Unable to wake up
>>>>>>>>> console
>>>>>>>>> Jan 29 09:14:12 raspberrypi weewx[506]: import of driver failed:
>>>>>>>>> Unable to wake up Vantage console (<class 'weewx.WakeupError'>)
>>>>>>>>> Jan 29 09:14:12 raspberrypi weewx[506]: engine: Unable to load
>>>>>>>>> driver: Unable to wake up Vantage console
>>>>>>>>> Jan 29 09:14:12 raspberrypi weewx[506]:     ****  Exiting...
>>>>>>>>> Jan 29 09:14:27 raspberrypi kernel: [   39.511958] Under-voltage
>>>>>>>>> detected! (0x00050005)
>>>>>>>>> Jan 29 09:14:31 raspberrypi kernel: [   43.671921] Voltage
>>>>>>>>> normalised (0x00000000)
>>>>>>>>> Jan 29 09:15:00 raspberrypi ntpd[467]: Soliciting pool server
>>>>>>>>> 103.239.8.22
>>>>>>>>> Jan 29 09:15:00 raspberrypi ntpd[467]: Soliciting pool server
>>>>>>>>> 202.46.185.18
>>>>>>>>> Jan 29 09:15:01 raspberrypi ntpd[467]: Soliciting pool server
>>>>>>>>> 203.99.128.48
>>>>>>>>> Jan 29 09:15:01 raspberrypi ntpd[467]: Soliciting pool server
>>>>>>>>> 103.106.66.123
>>>>>>>>> Jan 29 09:15:02 raspberrypi ntpd[467]: Soliciting pool server
>>>>>>>>> 103.242.68.69
>>>>>>>>> Jan 29 09:15:02 raspberrypi ntpd[467]: Soliciting pool server
>>>>>>>>> 103.106.65.219
>>>>>>>>> Jan 29 09:15:02 raspberrypi ntpd[467]: Soliciting pool server
>>>>>>>>> 103.242.70.5
>>>>>>>>> Jan 29 09:15:02 raspberrypi ntpd[467]: Soliciting pool server
>>>>>>>>> 122.252.188.99
>>>>>>>>> Jan 29 09:15:03 raspberrypi ntpd[467]: Soliciting pool server
>>>>>>>>> 130.217.226.51
>>>>>>>>> Jan 29 09:15:03 raspberrypi ntpd[467]: Soliciting pool server
>>>>>>>>> 103.242.68.68
>>>>>>>>> Jan 29 09:15:03 raspberrypi ntpd[467]: Soliciting pool server
>>>>>>>>> 203.99.128.34
>>>>>>>>> Jan 29 09:15:04 raspberrypi ntpd[467]: Soliciting pool server
>>>>>>>>> 202.46.177.18
>>>>>>>>> Jan 29 09:15:04 raspberrypi ntpd[467]: Soliciting pool server
>>>>>>>>> 2407:f100:0:4::3
>>>>>>>>> Jan 29 09:15:06 raspberrypi ntpd[467]: Soliciting pool server
>>>>>>>>> 202.46.178.18
>>>>>>>>> Jan 29 09:17:41 raspberrypi systemd[584]: Time has been changed
>>>>>>>>> Jan 29 09:17:41 raspberrypi systemd[1]: Time has been changed
>>>>>>>>> Jan 29 09:17:41 raspberrypi systemd[1]: apt-daily.timer: Adding 9h
>>>>>>>>> 28min 39.184756s random time.
>>>>>>>>> Jan 29 09:17:41 raspberrypi systemd[1]: apt-daily-upgrade.timer:
>>>>>>>>> Adding 27min 17.961005s random time.
>>>>>>>>> Jan 29 09:18:28 raspberrypi kernel: [  126.872661] Under-voltage
>>>>>>>>> detected! (0x00050005)
>>>>>>>>> Jan 29 09:18:34 raspberrypi kernel: [  133.112736] Voltage
>>>>>>>>> normalised (0x00000000)
>>>>>>>>> Jan 29 09:18:34 raspberrypi CRON[1276]: (root) CMD (   cd / &&
>>>>>>>>> run-parts --report /etc/cron.hourly)
>>>>>>>>> Jan 29 09:22:29 raspberrypi kernel: [  368.155297]
>>>>>>>>> rpi_firmware_get_throttled: 2 callbacks suppressed
>>>>>>>>> Jan 29 09:22:29 raspberrypi kernel: [  368.155304] Under-voltage
>>>>>>>>> detected! (0x00050005)
>>>>>>>>> Jan 29 09:22:33 raspberrypi kernel: [  372.315315]
>>>>>>>>> rpi_firmware_get_throttled: 2 callbacks suppressed
>>>>>>>>> Jan 29 09:22:33 raspberrypi kernel: [  372.315322] Voltage
>>>>>>>>> normalised (0x00000000)
>>>>>>>>> Jan 29 09:24:27 raspberrypi kernel: [  486.716533] Under-voltage
>>>>>>>>> detected! (0x00050005)
>>>>>>>>> Jan 29 09:24:34 raspberrypi kernel: [  492.956607] Voltage
>>>>>>>>> normalised (0x00000000)
>>>>>>>>> Jan 29 09:26:28 raspberrypi kernel: [  607.357755] Under-voltage
>>>>>>>>> detected! (0x00050005)
>>>>>>>>> Jan 29 09:26:32 raspberrypi kernel: [  611.517793] Voltage
>>>>>>>>> normalised (0x00000000)
>>>>>>>>> Jan 29 09:26:45 raspberrypi ntpd[467]: 203.99.128.34 local addr
>>>>>>>>> 10.1.1.7 -> <null>
>>>>>>>>> Jan 29 09:30:13 raspberrypi ntpd[467]: 103.239.8.22 local addr
>>>>>>>>> 10.1.1.7 -> <null>
>>>>>>>>> Jan 29 09:30:45 raspberrypi ntpd[467]: 203.99.128.48 local addr
>>>>>>>>> 10.1.1.7 -> <null>
>>>>>>>>> Jan 29 09:31:18 raspberrypi ntpd[467]: 122.252.188.99 local addr
>>>>>>>>> 10.1.1.7 -> <null>
>>>>>>>>> Jan 29 09:31:23 raspberrypi systemd[1]: Starting Cleanup of
>>>>>>>>> Temporary Directories...
>>>>>>>>> Jan 29 09:31:23 raspberrypi systemd[1]: Started Cleanup of
>>>>>>>>> Temporary Directories.
>>>>>>>>> Jan 29 09:32:22 raspberrypi ntpd[467]: 130.217.226.51 local addr
>>>>>>>>> 10.1.1.7 -> <null>
>>>>>>>>> Jan 29 09:32:59 raspberrypi kernel: [  998.401865] Under-voltage
>>>>>>>>> detected! (0x00050005)
>>>>>>>>> Jan 29 09:33:03 raspberrypi kernel: [ 1002.561870] Voltage
>>>>>>>>> normalised (0x00000000)
>>>>>>>>> Jan 29 09:33:05 raspberrypi kernel: [ 1004.643095] Under-voltage
>>>>>>>>> detected! (0x00050005)
>>>>>>>>> Jan 29 09:33:12 raspberrypi kernel: [ 1010.882010] Voltage
>>>>>>>>> normalised (0x00000000)
>>>>>>>>> Jan 29 09:33:22 raspberrypi kernel: [ 1021.282184] Under-voltage
>>>>>>>>> detected! (0x00050005)
>>>>>>>>> Jan 29 09:33:34 raspberrypi kernel: [ 1033.762240] Voltage
>>>>>>>>> normalised (0x00000000)
>>>>>>>>> Jan 29 09:34:42 raspberrypi ntpd[467]: 103.106.66.123 local addr
>>>>>>>>> 10.1.1.7 -> <null>
>>>>>>>>> Jan 29 09:35:16 raspberrypi ntpd[467]: 103.106.65.219 local addr
>>>>>>>>> 10.1.1.7 -> <null>
>>>>>>>>> Jan 29 09:38:17 raspberrypi kernel: [ 1316.645409]
>>>>>>>>> rpi_firmware_get_throttled: 12 callbacks suppressed
>>>>>>>>> Jan 29 09:38:17 raspberrypi kernel: [ 1316.645416] Under-voltage
>>>>>>>>> detected! (0x00050005)
>>>>>>>>> Jan 29 09:38:26 raspberrypi kernel: [ 1324.965452]
>>>>>>>>> rpi_firmware_get_throttled: 12 callbacks suppressed
>>>>>>>>> Jan 29 09:38:26 raspberrypi kernel: [ 1324.965457] Voltage
>>>>>>>>> normalised (0x00000000)
>>>>>>>>> Jan 29 09:38:28 raspberrypi kernel: [ 1327.045547] Under-voltage
>>>>>>>>> detected! (0x00050005)
>>>>>>>>> Jan 29 09:38:32 raspberrypi kernel: [ 1331.205544] Voltage
>>>>>>>>> normalised (0x00000000)
>>>>>>>>> Jan 29 09:38:36 raspberrypi kernel: [ 1335.365722] Under-voltage
>>>>>>>>> detected! (0x00050005)
>>>>>>>>> Jan 29 09:38:55 raspberrypi kernel: [ 1354.085857] Voltage
>>>>>>>>> normalised (0x00000000)
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> On Tuesday, 29 January 2019 08:51:01 UTC+13, vince wrote:
>>>>>>>>>>
>>>>>>>>>> On Monday, January 28, 2019 at 11:34:08 AM UTC-8, monmul wrote:
>>>>>>>>>>>
>>>>>>>>>>> I do have a spare official power supply, so I will swap out that
>>>>>>>>>>> and test. ... I have a Pi3B+ on the way
>>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> Reminder, the pi3b+ need 'more' power and runs a little hotter
>>>>>>>>>> than the others, so definitely be certain you have a quality power 
>>>>>>>>>> supply.
>>>>>>>>>>
>>>>>>>>>> I have had great luck with
>>>>>>>>>> https://www.amazon.com/CanaKit-Raspberry-Power-Supply-Listed/dp/B07BC6WH7V
>>>>>>>>>> just as one example.  Also like the nice on/off switch dongle that 
>>>>>>>>>> came
>>>>>>>>>> with it.
>>>>>>>>>>
>>>>>>>>> --
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>>>>>>>>
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