Re: [weewx-user] home-made arduino weather station condensation/frost vs ventilation for heat

[Timothy L]

I would like to reiterate from the first email as well as what Tom had
stated that a lot of ventilation would be your best friend in your
situation. The more the better. Your main concern should be simply keeping
the rain off of the Electronics but use a lot of ventilation. Solar powered
fans may help. Your enclosure should stay as close to ambient temperature
as possible. That is the ideal of what you would be able to hope for when
it's sunny and hot.

On Wed, Nov 9, 2022, 9:11 PM William Garber  wrote:

> lecoqacr...   There is a temperature probe in a solar radiation shield and
> another temperature probe inside the enclosure to see if it is
> overheating.  It gets very hot in the summer and it goes down to freezing
> about now in the morning when there is an occasional frost.
> There is a second weather station which has vents covered with fans.  that
> seems to be doing okay now.  it has not crashed once 
>
> On Wednesday, November 9, 2022 at 7:16:12 AM UTC-8 ton...@gmail.com wrote:
>
>> Based on my experience with naval equipment, real watertightness has a
>> high price.
>>
>> As alternative,  the more ventilation, the better:
>> just try to prevent that drops, dust and insects may enter the box.
>> The protecting box when able to 'breath' probably can get rid of
>> condensation.
>> That said, you should accept (trading off price against protection) that
>> most lower priced electronics have insufficient protection against moist
>> and as consequence will have a 'limited' lifetime.
>> Therefore plan ahead a replacement or repair max. every 3 years.
>> Op 9-11-2022 om 15:17 schreef William Garber:
>>
>> this is a continuation of
>>
>> https://forum.arduino.cc/t/will-adafruit-itsy-bitsy-atsamd51-overheat-in-enclosure-at-110f/1045678
>> 
>> On Wednesday, November 9, 2022 at 3:59:32 AM UTC-8 tke...@gmail.com
>> wrote:
>>
>>> I agree with Timothy.
>>>
>>> After a career in oceanography and 20+ years of sailing, I've concluded
>>> there is no such thing as waterproof. Just varying degrees of water
>>> resistance.
>>>
>>> Condensation happens when warm, moist air meets a colder surface and
>>> gets chilled to the dewpoint. Ventilation ensures that everything is at the
>>> same temperature. I  don't know how much heat the M4 puts out, but it's
>>> probably enough to keep the surfaces warm relative to the incoming air.
>>>
>>> On Tue, Nov 8, 2022 at 6:06 PM Timothy L  wrote:
>>>
 In my humble opinion having built a couple boxes for wireless bridges
 to shield the radios from rain, the more venting the better. As much as
 possible to cool the equipment and in your case avoid condensation. I glued
 styrofoam board to the metal roof to reduce heat from the sun while leaving
 bottoms open with wire screening to prevent bugs and let moisture out. I
 also put 2 inch holes near the top with screening to let heat rise out of
 the holes while fresh air comes in. I wouldn't put a temperature sensor
 inside the box due to the fact that you are readings will not be actual
 outside temperatures but box temperatures.

 On Tuesday, November 8, 2022, William Garber 
 wrote:
 > it has weewx drivers
 >
 > On Sunday, November 6, 2022 at 12:24:57 PM UTC-8 William Garber wrote:
 >>
 >> I created a home made arduino weather station and the software is
 running okay; the temperature gets up to 110 F on the hottest day on record
 and it is usually dry except for the rainy season when it can pour
 mercilessly; the system is made of four enclosures which are currently
 waterproof and are shaded from the sun; I am waiting for a hot day to find
 out if they will overheat; If I introduce a tiny covered vent I am afraid
 that will let in condensation which will freeze on a frosty day and damage
 things;
 >> any input please?   Should I leave it waterproof or add the vent?
 >> The dev board is an adafruit itsy bitsy M4 (ATSAMD51G)
 >
 > --
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Re: [weewx-user] home-made arduino weather station condensation/frost vs ventilation for heat

[William Garber]

lecoqacr...   There is a temperature probe in a solar radiation shield and 
another temperature probe inside the enclosure to see if it is 
overheating.  It gets very hot in the summer and it goes down to freezing 
about now in the morning when there is an occasional frost.
There is a second weather station which has vents covered with fans.  that 
seems to be doing okay now.  it has not crashed once 

On Wednesday, November 9, 2022 at 7:16:12 AM UTC-8 ton...@gmail.com wrote:

> Based on my experience with naval equipment, real watertightness has a 
> high price.
>
> As alternative,  the more ventilation, the better:
> just try to prevent that drops, dust and insects may enter the box.
> The protecting box when able to 'breath' probably can get rid of 
> condensation.
> That said, you should accept (trading off price against protection) that 
> most lower priced electronics have insufficient protection against moist 
> and as consequence will have a 'limited' lifetime.
> Therefore plan ahead a replacement or repair max. every 3 years.
> Op 9-11-2022 om 15:17 schreef William Garber:
>
> this is a continuation of 
>
> https://forum.arduino.cc/t/will-adafruit-itsy-bitsy-atsamd51-overheat-in-enclosure-at-110f/1045678
>  
> 
>  
> On Wednesday, November 9, 2022 at 3:59:32 AM UTC-8 tke...@gmail.com wrote:
>
>> I agree with Timothy.
>>
>> After a career in oceanography and 20+ years of sailing, I've concluded 
>> there is no such thing as waterproof. Just varying degrees of water 
>> resistance. 
>>
>> Condensation happens when warm, moist air meets a colder surface and gets 
>> chilled to the dewpoint. Ventilation ensures that everything is at the same 
>> temperature. I  don't know how much heat the M4 puts out, but it's probably 
>> enough to keep the surfaces warm relative to the incoming air.
>>
>> On Tue, Nov 8, 2022 at 6:06 PM Timothy L  wrote:
>>
>>> In my humble opinion having built a couple boxes for wireless bridges to 
>>> shield the radios from rain, the more venting the better. As much as 
>>> possible to cool the equipment and in your case avoid condensation. I glued 
>>> styrofoam board to the metal roof to reduce heat from the sun while leaving 
>>> bottoms open with wire screening to prevent bugs and let moisture out. I 
>>> also put 2 inch holes near the top with screening to let heat rise out of 
>>> the holes while fresh air comes in. I wouldn't put a temperature sensor 
>>> inside the box due to the fact that you are readings will not be actual 
>>> outside temperatures but box temperatures.
>>>
>>> On Tuesday, November 8, 2022, William Garber  wrote:
>>> > it has weewx drivers
>>> >
>>> > On Sunday, November 6, 2022 at 12:24:57 PM UTC-8 William Garber wrote:
>>> >>
>>> >> I created a home made arduino weather station and the software is 
>>> running okay; the temperature gets up to 110 F on the hottest day on record 
>>> and it is usually dry except for the rainy season when it can pour 
>>> mercilessly; the system is made of four enclosures which are currently 
>>> waterproof and are shaded from the sun; I am waiting for a hot day to find 
>>> out if they will overheat; If I introduce a tiny covered vent I am afraid 
>>> that will let in condensation which will freeze on a frosty day and damage 
>>> things;
>>> >> any input please?   Should I leave it waterproof or add the vent?
>>> >> The dev board is an adafruit itsy bitsy M4 (ATSAMD51G)
>>> >
>>> > --
>>> > You received this message because you are subscribed to the Google 
>>> Groups "weewx-user" group.
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>>> an email to weewx-user+...@googlegroups.com.
>>> > To view this discussion on the web visit 
>>> https://groups.google.com/d/msgid/weewx-user/063ddfe2-de39-4900-97b4-0d38a7151d3en%40googlegroups.com
>>> .
>>> > -- 
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>>> Groups "weewx-user" group.
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>>>
>> To view this discussion on the web visit 
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>>>  
>>> 
>>> .
>>>
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>  
> 

Re: [weewx-user] Re: weewx-wh23xx - Weewx breaks starting/running after upgrade from 3.9.2 to 4.0

[Günther Wrana]

Hello,

i have deinstalled weewx and all configurations.
Then i have weewx installed and the weewx.sdb imported.
After the have I reboot the pi.
Now it is still running.
I think this was not the right way but it was my way.

Thank you for all, the next problem comes certainly!

Günther

vince schrieb am Mittwoch, 9. November 2022 um 18:46:34 UTC+1:

> oops - that should of course be "29729" in my reply below.  You want to 
> stop the process by its id.
>
> On Wednesday, November 9, 2022 at 9:44:59 AM UTC-8 vince wrote:
>
>>
>> sudo kill -9 18497
>> sudo kill -9 29720
>> then check again and they should be gone
>> then start weewx up again
>> then check again and only one should be running and hopefully healthy
>>
>> (the -9 there says kill it with a bigger hammer)
>>
>>
>> Alternately, if you simply reboot the pi all the processes will be 
>> stopped, but you should almost never need to reboot a pi.
>>
>> On Wednesday, November 9, 2022 at 8:39:20 AM UTC-8 kawa...@gmail.com 
>> wrote:
>>
>>> Hi and how can I fix this error.
>>>
>>> root 18497  2.4  3.4  53384 32924 ?SNov06 115:40 python3 
>>> /usr/share/weewx/weewxd --daemon --pidfile=/var/run/weewx.pid 
>>> /etc/weewx/weewx.conf
>>> root 29729  1.7  3.9  92136 37184 ?Sl   Nov01 200:45 python3 
>>> /usr/share/weewx/weewxd --daemon --pidfile=/var/run/weewx.pid 
>>> /etc/weewx/weewx.conf
>>>
>>> Thank you for help!
>>>
>>> vince schrieb am Montag, 7. November 2022 um 18:02:35 UTC+1:
>>>
 You seem to have multiple weewx instances running.   One is process 
 18497, one is process 29729.

 Run "ps axu | grep wee" and I suspect you will see more than one weewx 
 running.




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Re: [weewx-user] Re: weewx-wh23xx - Weewx breaks starting/running after upgrade from 3.9.2 to 4.0

[vince]

oops - that should of course be "29729" in my reply below.  You want to 
stop the process by its id.

On Wednesday, November 9, 2022 at 9:44:59 AM UTC-8 vince wrote:

>
> sudo kill -9 18497
> sudo kill -9 29720
> then check again and they should be gone
> then start weewx up again
> then check again and only one should be running and hopefully healthy
>
> (the -9 there says kill it with a bigger hammer)
>
>
> Alternately, if you simply reboot the pi all the processes will be 
> stopped, but you should almost never need to reboot a pi.
>
> On Wednesday, November 9, 2022 at 8:39:20 AM UTC-8 kawa...@gmail.com 
> wrote:
>
>> Hi and how can I fix this error.
>>
>> root 18497  2.4  3.4  53384 32924 ?SNov06 115:40 python3 
>> /usr/share/weewx/weewxd --daemon --pidfile=/var/run/weewx.pid 
>> /etc/weewx/weewx.conf
>> root 29729  1.7  3.9  92136 37184 ?Sl   Nov01 200:45 python3 
>> /usr/share/weewx/weewxd --daemon --pidfile=/var/run/weewx.pid 
>> /etc/weewx/weewx.conf
>>
>> Thank you for help!
>>
>> vince schrieb am Montag, 7. November 2022 um 18:02:35 UTC+1:
>>
>>> You seem to have multiple weewx instances running.   One is process 
>>> 18497, one is process 29729.
>>>
>>> Run "ps axu | grep wee" and I suspect you will see more than one weewx 
>>> running.
>>>
>>>
>>>

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Re: [weewx-user] Re: weewx-wh23xx - Weewx breaks starting/running after upgrade from 3.9.2 to 4.0

[vince]

sudo kill -9 18497
sudo kill -9 29720
then check again and they should be gone
then start weewx up again
then check again and only one should be running and hopefully healthy

(the -9 there says kill it with a bigger hammer)


Alternately, if you simply reboot the pi all the processes will be stopped, 
but you should almost never need to reboot a pi.

On Wednesday, November 9, 2022 at 8:39:20 AM UTC-8 kawa...@gmail.com wrote:

> Hi and how can I fix this error.
>
> root 18497  2.4  3.4  53384 32924 ?SNov06 115:40 python3 
> /usr/share/weewx/weewxd --daemon --pidfile=/var/run/weewx.pid 
> /etc/weewx/weewx.conf
> root 29729  1.7  3.9  92136 37184 ?Sl   Nov01 200:45 python3 
> /usr/share/weewx/weewxd --daemon --pidfile=/var/run/weewx.pid 
> /etc/weewx/weewx.conf
>
> Thank you for help!
>
> vince schrieb am Montag, 7. November 2022 um 18:02:35 UTC+1:
>
>> You seem to have multiple weewx instances running.   One is process 
>> 18497, one is process 29729.
>>
>> Run "ps axu | grep wee" and I suspect you will see more than one weewx 
>> running.
>>
>>
>>

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Re: [weewx-user] Re: weewx-wh23xx - Weewx breaks starting/running after upgrade from 3.9.2 to 4.0

[Günther Wrana]

Hi and how can I fix this error.

root 18497  2.4  3.4  53384 32924 ?SNov06 115:40 python3 
/usr/share/weewx/weewxd --daemon --pidfile=/var/run/weewx.pid 
/etc/weewx/weewx.conf
root 29729  1.7  3.9  92136 37184 ?Sl   Nov01 200:45 python3 
/usr/share/weewx/weewxd --daemon --pidfile=/var/run/weewx.pid 
/etc/weewx/weewx.conf

Thank you for help!

vince schrieb am Montag, 7. November 2022 um 18:02:35 UTC+1:

> You seem to have multiple weewx instances running.   One is process 18497, 
> one is process 29729.
>
> Run "ps axu | grep wee" and I suspect you will see more than one weewx 
> running.
>
>
>

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Re: [weewx-user] home-made arduino weather station condensation/frost vs ventilation for heat

[Anton vanNwnhzn@GMail]

Based on my experience with naval equipment, real watertightness has a 
high price.


As alternative,  the more ventilation, the better:
just try to prevent that drops, dust and insects may enter the box.
The protecting box when able to 'breath' probably can get rid of 
condensation.
That said, you should accept (trading off price against protection) that 
most lower priced electronics have insufficient protection against moist 
and as consequence will have a 'limited' lifetime.

Therefore plan ahead a replacement or repair max. every 3 years.

Op 9-11-2022 om 15:17 schreef William Garber:

this is a continuation of
https://forum.arduino.cc/t/will-adafruit-itsy-bitsy-atsamd51-overheat-in-enclosure-at-110f/1045678 
 


On Wednesday, November 9, 2022 at 3:59:32 AM UTC-8 tke...@gmail.com wrote:

I agree with Timothy.

After a career in oceanography and 20+ years of sailing, I've
concluded there is no such thing as waterproof. Just varying
degrees of water resistance.

Condensation happens when warm, moist air meets a colder surface
and gets chilled to the dewpoint. Ventilation ensures that
everything is at the same temperature. I  don't know how much heat
the M4 puts out, but it's probably enough to keep the surfaces
warm relative to the incoming air.

On Tue, Nov 8, 2022 at 6:06 PM Timothy L 
wrote:

In my humble opinion having built a couple boxes for wireless
bridges to shield the radios from rain, the more venting the
better. As much as possible to cool the equipment and in your
case avoid condensation. I glued styrofoam board to the metal
roof to reduce heat from the sun while leaving bottoms open
with wire screening to prevent bugs and let moisture out. I
also put 2 inch holes near the top with screening to let heat
rise out of the holes while fresh air comes in. I wouldn't put
a temperature sensor inside the box due to the fact that you
are readings will not be actual outside temperatures but box
temperatures.

On Tuesday, November 8, 2022, William Garber
 wrote:
> it has weewx drivers
>
> On Sunday, November 6, 2022 at 12:24:57 PM UTC-8 William
Garber wrote:
>>
>> I created a home made arduino weather station and the
software is running okay; the temperature gets up to 110 F on
the hottest day on record and it is usually dry except for the
rainy season when it can pour mercilessly; the system is made
of four enclosures which are currently waterproof and are
shaded from the sun; I am waiting for a hot day to find out if
they will overheat; If I introduce a tiny covered vent I am
afraid that will let in condensation which will freeze on a
frosty day and damage things;
>> any input please?   Should I leave it waterproof or add the
vent?
>> The dev board is an adafruit itsy bitsy M4 (ATSAMD51G)
>
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.

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Re: [weewx-user] home-made arduino weather station condensation/frost vs ventilation for heat

[William Garber]

this is a continuation of 
https://forum.arduino.cc/t/will-adafruit-itsy-bitsy-atsamd51-overheat-in-enclosure-at-110f/1045678
 

On Wednesday, November 9, 2022 at 3:59:32 AM UTC-8 tke...@gmail.com wrote:

> I agree with Timothy.
>
> After a career in oceanography and 20+ years of sailing, I've concluded 
> there is no such thing as waterproof. Just varying degrees of water 
> resistance. 
>
> Condensation happens when warm, moist air meets a colder surface and gets 
> chilled to the dewpoint. Ventilation ensures that everything is at the same 
> temperature. I  don't know how much heat the M4 puts out, but it's probably 
> enough to keep the surfaces warm relative to the incoming air.
>
> On Tue, Nov 8, 2022 at 6:06 PM Timothy L  wrote:
>
>> In my humble opinion having built a couple boxes for wireless bridges to 
>> shield the radios from rain, the more venting the better. As much as 
>> possible to cool the equipment and in your case avoid condensation. I glued 
>> styrofoam board to the metal roof to reduce heat from the sun while leaving 
>> bottoms open with wire screening to prevent bugs and let moisture out. I 
>> also put 2 inch holes near the top with screening to let heat rise out of 
>> the holes while fresh air comes in. I wouldn't put a temperature sensor 
>> inside the box due to the fact that you are readings will not be actual 
>> outside temperatures but box temperatures.
>>
>> On Tuesday, November 8, 2022, William Garber  wrote:
>> > it has weewx drivers
>> >
>> > On Sunday, November 6, 2022 at 12:24:57 PM UTC-8 William Garber wrote:
>> >>
>> >> I created a home made arduino weather station and the software is 
>> running okay; the temperature gets up to 110 F on the hottest day on record 
>> and it is usually dry except for the rainy season when it can pour 
>> mercilessly; the system is made of four enclosures which are currently 
>> waterproof and are shaded from the sun; I am waiting for a hot day to find 
>> out if they will overheat; If I introduce a tiny covered vent I am afraid 
>> that will let in condensation which will freeze on a frosty day and damage 
>> things;
>> >> any input please?   Should I leave it waterproof or add the vent?
>> >> The dev board is an adafruit itsy bitsy M4 (ATSAMD51G)
>> >
>> > --
>> > 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 weewx-user+...@googlegroups.com.
>> > To view this discussion on the web visit 
>> https://groups.google.com/d/msgid/weewx-user/063ddfe2-de39-4900-97b4-0d38a7151d3en%40googlegroups.com
>> .
>> > 
>>
>> -- 
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>>
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>>  
>> 
>> .
>>
>

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Re: [weewx-user] home-made arduino weather station condensation/frost vs ventilation for heat

[Tom Keffer]

I agree with Timothy.

After a career in oceanography and 20+ years of sailing, I've concluded
there is no such thing as waterproof. Just varying degrees of water
resistance.

Condensation happens when warm, moist air meets a colder surface and gets
chilled to the dewpoint. Ventilation ensures that everything is at the same
temperature. I  don't know how much heat the M4 puts out, but it's probably
enough to keep the surfaces warm relative to the incoming air.

On Tue, Nov 8, 2022 at 6:06 PM Timothy L 
wrote:

> In my humble opinion having built a couple boxes for wireless bridges to
> shield the radios from rain, the more venting the better. As much as
> possible to cool the equipment and in your case avoid condensation. I glued
> styrofoam board to the metal roof to reduce heat from the sun while leaving
> bottoms open with wire screening to prevent bugs and let moisture out. I
> also put 2 inch holes near the top with screening to let heat rise out of
> the holes while fresh air comes in. I wouldn't put a temperature sensor
> inside the box due to the fact that you are readings will not be actual
> outside temperatures but box temperatures.
>
> On Tuesday, November 8, 2022, William Garber 
> wrote:
> > it has weewx drivers
> >
> > On Sunday, November 6, 2022 at 12:24:57 PM UTC-8 William Garber wrote:
> >>
> >> I created a home made arduino weather station and the software is
> running okay; the temperature gets up to 110 F on the hottest day on record
> and it is usually dry except for the rainy season when it can pour
> mercilessly; the system is made of four enclosures which are currently
> waterproof and are shaded from the sun; I am waiting for a hot day to find
> out if they will overheat; If I introduce a tiny covered vent I am afraid
> that will let in condensation which will freeze on a frosty day and damage
> things;
> >> any input please?   Should I leave it waterproof or add the vent?
> >> The dev board is an adafruit itsy bitsy M4 (ATSAMD51G)
> >
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