7 Jul
2021
7 Jul
'21
1:48 p.m.
Last night an intrepid cabal of hackers hacked their way through a skylight to
install a high-flow ventilation fan on the roof!
The power cord hangs down into sudoroom so that mice and tiny hackers can
rappel down into the space rather than use the door like a noob. Also the
power cord can be used to supply power to the fan so that it runs.
It uses 500 watts but is quite powerful. I haven't seen our electric bill but
assuming we're paying about 25 cents per kilowatt-hour, leaving it on all the
time will cost us $3 per day, or $92 dollars per month.
I think that rather than leaving the fan on all the time, we should create a
sophisticated control system using a microphone and AI machine learning to
detect when people are flapping their mouths (meat talking) in the space, and
turn on the fan during those times. We can also measure humidity, or have a
camera watching for motion, or even look at network traffic and see if people
are using data in the nearby area. I can supply the relay connected to a
server where this software can make those decisions.
here is a picture of the finished product as viewed by birds. If you want to
see what it looks like from below, go into sudoroom and plug it in.
https://sudoroom.org/wiki/File:Sudo_apt_install_vent_fan_on_roof.jpg
-jake
7 Jul
7 Jul
1:50 p.m.
Huzzah!! Excellent work. Thank you
On Wed, Jul 7, 2021, at 13:48, Jake wrote:
Last night an intrepid cabal of hackers hacked their
way through a skylight to
install a high-flow ventilation fan on the roof!
The power cord hangs down into sudoroom so that mice and tiny hackers can
rappel down into the space rather than use the door like a noob. Also the
power cord can be used to supply power to the fan so that it runs.
It uses 500 watts but is quite powerful. I haven't seen our electric bill but
assuming we're paying about 25 cents per kilowatt-hour, leaving it on all the
time will cost us $3 per day, or $92 dollars per month.
I think that rather than leaving the fan on all the time, we should create a
sophisticated control system using a microphone and AI machine learning to
detect when people are flapping their mouths (meat talking) in the space, and
turn on the fan during those times. We can also measure humidity, or have a
camera watching for motion, or even look at network traffic and see if people
are using data in the nearby area. I can supply the relay connected to a
server where this software can make those decisions.
here is a picture of the finished product as viewed by birds. If you want to
see what it looks like from below, go into sudoroom and plug it in.
https://sudoroom.org/wiki/File:Sudo_apt_install_vent_fan_on_roof.jpg
-jake
_______________________________________________
sudo-discuss mailing list
sudo-discuss(a)lists.sudoroom.org
https://sudoroom.org/lists/listinfo/sudo-discuss
2:09 p.m.
At the risk of being a downer (but I also know Sudo/Omni is having insurance issues), I
just wanted to point out that Cal Fire code 605.5 recommends against an extension cord
going through a ceiling or wall.
Extension cords and flexible cords shall not be
affixed to structures, extended through walls, ceilings or floors, or under doors or floor
coverings, nor shall such cords be subject to environmental damage or physical impact.
As long as it has a drip loop it’s probably fine, but I’m not an inspector, and haven’t
seen the fan either.
Sorry if this is not helpful for whatever reason. If that is the case, just add this email
to the long list of useless information flowing around the internet :)
On a more positive note: The control system ideas sound rad!
Eric
On Wed, Jul 7, 2021, at 13:48, Jake wrote:
Last night an intrepid cabal of hackers hacked their
way through a skylight to
install a high-flow ventilation fan on the roof!
The power cord hangs down into sudoroom so that mice and tiny hackers can
rappel down into the space rather than use the door like a noob. Also the
power cord can be used to supply power to the fan so that it runs.
It uses 500 watts but is quite powerful. I haven't seen our electric bill but
assuming we're paying about 25 cents per kilowatt-hour, leaving it on all the
time will cost us $3 per day, or $92 dollars per month.
I think that rather than leaving the fan on all the time, we should create a
sophisticated control system using a microphone and AI machine learning to
detect when people are flapping their mouths (meat talking) in the space, and
turn on the fan during those times. We can also measure humidity, or have a
camera watching for motion, or even look at network traffic and see if people
are using data in the nearby area. I can supply the relay connected to a
server where this software can make those decisions.
here is a picture of the finished product as viewed by birds. If you want to
see what it looks like from below, go into sudoroom and plug it in.
https://sudoroom.org/wiki/File:Sudo_apt_install_vent_fan_on_roof.jpg
-jake
_______________________________________________
sudo-discuss mailing list
sudo-discuss(a)lists.sudoroom.org
https://sudoroom.org/lists/listinfo/sudo-discuss
3:43 p.m.
I would also add that this type of exhaust fan is not designed for
continuous use due to overheating and the potential fire hazard risk. I
have a similar type of fan installed in a 4800 sqft building that is cycled
30 minutes on and 30 minutes off. It can become quite hot after 30 minutes
especially in warm weather.
On Wed, Jul 7, 2021 at 5:10 PM Eric O'Connor <eric(a)oco.nnor.org> wrote:
At the risk of being a downer (but I also know
Sudo/Omni is having
insurance issues), I just wanted to point out that Cal Fire code 605.5
recommends against an extension cord going through a ceiling or wall.
Extension cords and flexible cords shall not be
affixed to structures,
extended through walls, ceilings or floors, or under doors
or floor
coverings, nor shall such cords be subject to environmental damage or
physical impact.
As long as it has a drip loop it’s probably fine, but I’m not an
inspector, and haven’t seen the fan either.
Sorry if this is not helpful for whatever reason. If that is the case,
just add this email to the long list of useless information flowing around
the internet :)
On a more positive note: The control system ideas sound rad!
Eric
On Wed, Jul 7, 2021, at 13:48, Jake wrote:
Last night an intrepid cabal of hackers hacked
their way through a
skylight to
install a high-flow ventilation fan on the roof!
The power cord hangs down into sudoroom so that mice and tiny hackers can
rappel down into the space rather than use the door like a noob. Also
the
power cord can be used to supply power to the fan
so that it runs.
It uses 500 watts but is quite powerful. I haven't seen our electric
bill
but
assuming we're paying about 25 cents per
kilowatt-hour, leaving it on
all the
time will cost us $3 per day, or $92 dollars per
month.
I think that rather than leaving the fan on all the time, we should
create a
sophisticated control system using a microphone
and AI machine learning
to
detect when people are flapping their mouths
(meat talking) in the
space, and
turn on the fan during those times. We can also
measure humidity, or
have a
camera watching for motion, or even look at
network traffic and see if
people
are using data in the nearby area. I can supply
the relay connected to a
server where this software can make those decisions.
here is a picture of the finished product as viewed by birds. If you
want to
see what it looks like from below, go into
sudoroom and plug it in.
https://sudoroom.org/wiki/File:Sudo_apt_install_vent_fan_on_roof.jpg
-jake
_______________________________________________
sudo-discuss mailing list
sudo-discuss(a)lists.sudoroom.org
https://sudoroom.org/lists/listinfo/sudo-discuss
_______________________________________________
sudo-discuss mailing list
sudo-discuss(a)lists.sudoroom.org
https://sudoroom.org/lists/listinfo/sudo-discuss
4:17 p.m.
The plan is to remove/hide the extension cord dangling from the ceiling
before any fire inspections.
I strongly suggested a drip loop in case the rain cover fails, but alas the
current extension cord is not long enough for this. This should be fixed
before it rains in like 2 years. I also think the fan should not be used as
is during rain regardless because there is currently a non-weather-proof
plug on the roof.
Note that even tiny hackers should not do suspension or otherwise put any
weight on the dangling extension cord.
Cheers,
Angela
On Wed, Jul 7, 2021 at 3:43 PM Autonomous <autonomous666(a)gmail.com> wrote:
I would also add that this type of exhaust fan is not
designed for
continuous use due to overheating and the potential fire hazard risk. I
have a similar type of fan installed in a 4800 sqft building that is cycled
30 minutes on and 30 minutes off. It can become quite hot after 30 minutes
especially in warm weather.
On Wed, Jul 7, 2021 at 5:10 PM Eric O'Connor <eric(a)oco.nnor.org> wrote:
At the risk of being a downer (but I also know
Sudo/Omni is having
insurance issues), I just wanted to point out that Cal Fire code 605.5
recommends against an extension cord going through a ceiling or wall.
_______________________________________________
sudo-discuss mailing list
sudo-discuss(a)lists.sudoroom.org
https://sudoroom.org/lists/listinfo/sudo-discuss
Extension cords and flexible cords shall not be
affixed to structures,
extended through walls, ceilings or floors, or under doors
or floor
coverings, nor shall such cords be subject to environmental damage or
physical impact.
As long as it has a drip loop it’s probably fine, but I’m not an
inspector, and haven’t seen the fan either.
Sorry if this is not helpful for whatever reason. If that is the case,
just add this email to the long list of useless information flowing around
the internet :)
On a more positive note: The control system ideas sound rad!
Eric
On Wed, Jul 7, 2021, at 13:48, Jake wrote:
Last night an intrepid cabal of hackers hacked
their way through a
skylight to
install a high-flow ventilation fan on the roof!
The power cord hangs down into sudoroom so that mice and tiny hackers
can
rappel down into the space rather than use the
door like a noob. Also
the
power cord can be used to supply power to the fan
so that it runs.
It uses 500 watts but is quite powerful. I haven't seen our electric
bill
but
assuming we're paying about 25 cents per
kilowatt-hour, leaving it on
all the
time will cost us $3 per day, or $92 dollars per
month.
I think that rather than leaving the fan on all the time, we should
create a
sophisticated control system using a microphone
and AI machine learning
to
detect when people are flapping their mouths
(meat talking) in the
space, and
turn on the fan during those times. We can also
measure humidity, or
have a
camera watching for motion, or even look at
network traffic and see if
people
are using data in the nearby area. I can supply
the relay connected to
a
server where this software can make those
decisions.
here is a picture of the finished product as viewed by birds. If you
want to
see what it looks like from below, go into
sudoroom and plug it in.
https://sudoroom.org/wiki/File:Sudo_apt_install_vent_fan_on_roof.jpg
-jake
_______________________________________________
sudo-discuss mailing list
sudo-discuss(a)lists.sudoroom.org
https://sudoroom.org/lists/listinfo/sudo-discuss
_______________________________________________
sudo-discuss mailing list
sudo-discuss(a)lists.sudoroom.org
https://sudoroom.org/lists/listinfo/sudo-discuss
4:47 p.m.
Yay! How noisy does this fan wind up being when it's running? If I remember
correctly, this is a 2000 CFM inline duct fan, which seems overpowered for
use as an exhaust fan.
The power issue is also why I had been looking into solar powered exhaust
fans - you can power a 1000 CFM attic fan fairly easily from just a 15W
solar panel. (The reason why Jake's fan is 500W is because it's designed to
push that 2000 CFM through a network of ducts.)
We might want to loop in Rob's friend Elon, who knows quite a bit about
building ventilation, and has been checking out air turnover rates in the
building with an eye on reopening for events.
Patrik
On Wed, Jul 7, 2021 at 3:43 PM Autonomous <autonomous666(a)gmail.com> wrote:
I would also add that this type of exhaust fan is not
designed for
continuous use due to overheating and the potential fire hazard risk. I
have a similar type of fan installed in a 4800 sqft building that is cycled
30 minutes on and 30 minutes off. It can become quite hot after 30 minutes
especially in warm weather.
On Wed, Jul 7, 2021 at 5:10 PM Eric O'Connor <eric(a)oco.nnor.org> wrote:
At the risk of being a downer (but I also know
Sudo/Omni is having
insurance issues), I just wanted to point out that Cal Fire code 605.5
recommends against an extension cord going through a ceiling or wall.
_______________________________________________
sudo-discuss mailing list
sudo-discuss(a)lists.sudoroom.org
https://sudoroom.org/lists/listinfo/sudo-discuss
Extension cords and flexible cords shall not be
affixed to structures,
extended through walls, ceilings or floors, or under doors
or floor
coverings, nor shall such cords be subject to environmental damage or
physical impact.
As long as it has a drip loop it’s probably fine, but I’m not an
inspector, and haven’t seen the fan either.
Sorry if this is not helpful for whatever reason. If that is the case,
just add this email to the long list of useless information flowing around
the internet :)
On a more positive note: The control system ideas sound rad!
Eric
On Wed, Jul 7, 2021, at 13:48, Jake wrote:
Last night an intrepid cabal of hackers hacked
their way through a
skylight to
install a high-flow ventilation fan on the roof!
The power cord hangs down into sudoroom so that mice and tiny hackers
can
rappel down into the space rather than use the
door like a noob. Also
the
power cord can be used to supply power to the fan
so that it runs.
It uses 500 watts but is quite powerful. I haven't seen our electric
bill
but
assuming we're paying about 25 cents per
kilowatt-hour, leaving it on
all the
time will cost us $3 per day, or $92 dollars per
month.
I think that rather than leaving the fan on all the time, we should
create a
sophisticated control system using a microphone
and AI machine learning
to
detect when people are flapping their mouths
(meat talking) in the
space, and
turn on the fan during those times. We can also
measure humidity, or
have a
camera watching for motion, or even look at
network traffic and see if
people
are using data in the nearby area. I can supply
the relay connected to
a
server where this software can make those
decisions.
here is a picture of the finished product as viewed by birds. If you
want to
see what it looks like from below, go into
sudoroom and plug it in.
https://sudoroom.org/wiki/File:Sudo_apt_install_vent_fan_on_roof.jpg
-jake
_______________________________________________
sudo-discuss mailing list
sudo-discuss(a)lists.sudoroom.org
https://sudoroom.org/lists/listinfo/sudo-discuss
_______________________________________________
sudo-discuss mailing list
sudo-discuss(a)lists.sudoroom.org
https://sudoroom.org/lists/listinfo/sudo-discuss
5:05 p.m.
By the way - if any of you roof monkeys are up there again, it would be
great if someone could also have a look at the exhaust fans above the
entrance hall! Rob mentioned he may have located a switch but didn't have
time to do any troubleshooting yet - not clear if they are getting power,
if the motor is busted, or what. Would be worth running over a temporary
extension cord to check...
I don't have much time to play on the roof this week, but I'd be happy to
pay for a solar powered attic fan if someone can figure out how to mate it
with the vent in the skylight. Home Depot has a couple models in the
$200-300 range
<https://www.homedepot.com/b/Building-Materials-Ventilation-Roofing-Attic-Ventilation-Attic-Fans/Weather-Resistant/Exhaust/Roof-Mount/Solar-Attic-Fan/N-5yc1vZc65uZ1z19cj7Z1z19v14Z1z19ygqZ1z19ynt?NCNI-5&storeSelection=>
.
Patrik
On Wed, Jul 7, 2021 at 4:47 PM Patrik D'haeseleer <patrikd(a)gmail.com> wrote:
Yay! How noisy does this fan wind up being when
it's running? If I
remember correctly, this is a 2000 CFM inline duct fan, which seems
overpowered for use as an exhaust fan.
The power issue is also why I had been looking into solar powered exhaust
fans - you can power a 1000 CFM attic fan fairly easily from just a 15W
solar panel. (The reason why Jake's fan is 500W is because it's designed to
push that 2000 CFM through a network of ducts.)
We might want to loop in Rob's friend Elon, who knows quite a bit about
building ventilation, and has been checking out air turnover rates in the
building with an eye on reopening for events.
Patrik
On Wed, Jul 7, 2021 at 3:43 PM Autonomous <autonomous666(a)gmail.com> wrote:
I would also add that this type of exhaust fan is
not designed for
continuous use due to overheating and the potential fire hazard risk. I
have a similar type of fan installed in a 4800 sqft building that is cycled
30 minutes on and 30 minutes off. It can become quite hot after 30 minutes
especially in warm weather.
On Wed, Jul 7, 2021 at 5:10 PM Eric O'Connor <eric(a)oco.nnor.org> wrote:
At the risk of being a downer (but I also know
Sudo/Omni is having
insurance issues), I just wanted to point out that Cal Fire code 605.5
recommends against an extension cord going through a ceiling or wall.
_______________________________________________
sudo-discuss mailing list
sudo-discuss(a)lists.sudoroom.org
https://sudoroom.org/lists/listinfo/sudo-discuss
Extension cords and flexible cords shall not be
affixed to structures,
extended through walls, ceilings or floors, or under doors
or floor
coverings, nor shall such cords be subject to environmental damage or
physical impact.
As long as it has a drip loop it’s probably fine, but I’m not an
inspector, and haven’t seen the fan either.
Sorry if this is not helpful for whatever reason. If that is the case,
just add this email to the long list of useless information flowing around
the internet :)
On a more positive note: The control system ideas sound rad!
Eric
On Wed, Jul 7, 2021, at 13:48, Jake wrote:
Last night an intrepid cabal of hackers hacked
their way through a
skylight to
install a high-flow ventilation fan on the roof!
The power cord hangs down into sudoroom so that mice and tiny hackers
can
rappel down into the space rather than use the
door like a noob. Also
the
power cord can be used to supply power to the fan
so that it runs.
It uses 500 watts but is quite powerful. I haven't seen our electric
bill
but
assuming we're paying about 25 cents per
kilowatt-hour, leaving it on
all the
time will cost us $3 per day, or $92 dollars per
month.
I think that rather than leaving the fan on all the time, we should
create a
sophisticated control system using a microphone
and AI machine
learning to
detect when people are flapping their mouths
(meat talking) in the
space, and
turn on the fan during those times. We can also
measure humidity, or
have a
camera watching for motion, or even look at
network traffic and see if
people
are using data in the nearby area. I can supply
the relay connected
to a
server where this software can make those
decisions.
here is a picture of the finished product as viewed by birds. If you
want to
see what it looks like from below, go into
sudoroom and plug it in.
https://sudoroom.org/wiki/File:Sudo_apt_install_vent_fan_on_roof.jpg
-jake
_______________________________________________
sudo-discuss mailing list
sudo-discuss(a)lists.sudoroom.org
https://sudoroom.org/lists/listinfo/sudo-discuss
_______________________________________________
sudo-discuss mailing list
sudo-discuss(a)lists.sudoroom.org
https://sudoroom.org/lists/listinfo/sudo-discuss
8 Jul
8 Jul
1:12 p.m.
Between myself and another sudoroom member, we have more than enough solar
panels to greatly offset all of our fan use. There is no need to buy anything,
only to send volunteers to help configure and install these things. But that
has to be off-list for technical reasons.
-jake
On Wed, 7 Jul 2021, Patrik D'haeseleer wrote:
By the way - if any of you roof monkeys are up there
again, it would be
great if someone could also have a look at the exhaust fans above the
entrance hall! Rob mentioned he may have located a switch but didn't have
time to do any troubleshooting yet - not clear if they are getting power,
if the motor is busted, or what. Would be worth running over a temporary
extension cord to check...
I don't have much time to play on the roof this week, but I'd be happy to
pay for a solar powered attic fan if someone can figure out how to mate it
with the vent in the skylight. Home Depot has a couple models in the
$200-300 range
<https://www.homedepot.com/b/Building-Materials-Ventilation-Roofing-Attic-Ventilation-Attic-Fans/Weather-Resistant/Exhaust/Roof-Mount/Solar-Attic-Fan/N-5yc1vZc65uZ1z19cj7Z1z19v14Z1z19ygqZ1z19ynt?NCNI-5&storeSelection=>
.
Patrik
On Wed, Jul 7, 2021 at 4:47 PM Patrik D'haeseleer <patrikd(a)gmail.com> wrote:
Yay! How noisy does this fan wind up being when
it's running? If I
remember correctly, this is a 2000 CFM inline duct fan, which seems
overpowered for use as an exhaust fan.
The power issue is also why I had been looking into solar powered exhaust
fans - you can power a 1000 CFM attic fan fairly easily from just a 15W
solar panel. (The reason why Jake's fan is 500W is because it's designed to
push that 2000 CFM through a network of ducts.)
We might want to loop in Rob's friend Elon, who knows quite a bit about
building ventilation, and has been checking out air turnover rates in the
building with an eye on reopening for events.
Patrik
On Wed, Jul 7, 2021 at 3:43 PM Autonomous <autonomous666(a)gmail.com> wrote:
I would also add that this type of exhaust fan is
not designed for
continuous use due to overheating and the potential fire hazard risk. I
have a similar type of fan installed in a 4800 sqft building that is cycled
30 minutes on and 30 minutes off. It can become quite hot after 30 minutes
especially in warm weather.
On Wed, Jul 7, 2021 at 5:10 PM Eric O'Connor <eric(a)oco.nnor.org> wrote:
At the risk of being a downer (but I also know
Sudo/Omni is having
insurance issues), I just wanted to point out that Cal Fire code 605.5
recommends against an extension cord going through a ceiling or wall.
> Extension cords and flexible cords shall not be affixed to structures,
extended through walls, ceilings or floors, or under doors or floor
coverings, nor shall such cords be subject to environmental damage or
physical impact.
As long as it has a drip loop it’s probably fine, but I’m not an
inspector, and haven’t seen the fan either.
Sorry if this is not helpful for whatever reason. If that is the case,
just add this email to the long list of useless information flowing around
the internet :)
On a more positive note: The control system ideas sound rad!
Eric
On Wed, Jul 7, 2021, at 13:48, Jake wrote:
> Last night an intrepid cabal of hackers hacked their way through a
skylight to
> install a high-flow ventilation fan on the roof!
>
> The power cord hangs down into sudoroom so that mice and tiny hackers
can
> rappel down into the space rather than use the door like a noob. Also
the
> power cord can be used to supply power to the fan so that it runs.
>
> It uses 500 watts but is quite powerful. I haven't seen our electric
bill but
> assuming we're paying about 25 cents per kilowatt-hour, leaving it on
all the
> time will cost us $3 per day, or $92 dollars per month.
>
> I think that rather than leaving the fan on all the time, we should
create a
> sophisticated control system using a microphone and AI machine
learning to
> detect when people are flapping their mouths (meat talking) in the
space, and
> turn on the fan during those times. We can also measure humidity, or
have a
> camera watching for motion, or even look at network traffic and see if
people
> are using data in the nearby area. I can supply the relay connected
to a
> server where this software can make those decisions.
>
> here is a picture of the finished product as viewed by birds. If you
want to
> see what it looks like from below, go into sudoroom and plug it in.
>
> https://sudoroom.org/wiki/File:Sudo_apt_install_vent_fan_on_roof.jpg
>
> -jake
> _______________________________________________
> sudo-discuss mailing list
> sudo-discuss(a)lists.sudoroom.org
> https://sudoroom.org/lists/listinfo/sudo-discuss
>
_______________________________________________
sudo-discuss mailing list
sudo-discuss(a)lists.sudoroom.org
https://sudoroom.org/lists/listinfo/sudo-discuss
_______________________________________________
sudo-discuss mailing list
sudo-discuss(a)lists.sudoroom.org
https://sudoroom.org/lists/listinfo/sudo-discuss
1:58 p.m.
Do we have a second fan - ideally one that is correctly weatherproofed for
roof installation? I'm still thinking to install one on the skylight closer
to CCL as well. Maybe the big one above Sudo is sufficient for the entire
room though - will check next time I'm in.
I know some people may think this goes against the hacker ethos, but I'm
all in favor of using an affordable, ready-made, quiet,
commercial-off-the-shelf solution if available. Bonus if we can avoid
raising eyebrows in the unlikely event that any inspector ever bothers to
go check out the roof.
Patrik
On Thu, Jul 8, 2021, 1:12 PM Jake <jake(a)spaz.org> wrote:
Between myself and another sudoroom member, we have
more than enough solar
panels to greatly offset all of our fan use. There is no need to buy
anything,
only to send volunteers to help configure and install these things. But
that
has to be off-list for technical reasons.
-jake
On Wed, 7 Jul 2021, Patrik D'haeseleer wrote:
By the way - if any of you roof monkeys are up
there again, it would be
great if someone could also have a look at the exhaust fans above the
entrance hall! Rob mentioned he may have located a switch but didn't have
time to do any troubleshooting yet - not clear if they are getting power,
if the motor is busted, or what. Would be worth running over a temporary
extension cord to check...
I don't have much time to play on the roof this week, but I'd be happy to
pay for a solar powered attic fan if someone can figure out how to mate
it
with the vent in the skylight. Home Depot has a
couple models in the
$200-300 range
<
https://www.homedepot.com/b/Building-Materials-Ventilation-Roofing-Attic-Ve…
.
Patrik
On Wed, Jul 7, 2021 at 4:47 PM Patrik D'haeseleer <patrikd(a)gmail.com>
wrote:
> Yay! How noisy does this fan wind up being when it's running? If I
> remember correctly, this is a 2000 CFM inline duct fan, which seems
> overpowered for use as an exhaust fan.
>
> The power issue is also why I had been looking into solar powered
exhaust
> fans - you can power a 1000 CFM attic fan
fairly easily from just a 15W
> solar panel. (The reason why Jake's fan is 500W is because it's
designed to
> push that 2000 CFM through a network of
ducts.)
>
> We might want to loop in Rob's friend Elon, who knows quite a bit about
> building ventilation, and has been checking out air turnover rates in
the
> building with an eye on reopening for
events.
>
> Patrik
>
> On Wed, Jul 7, 2021 at 3:43 PM Autonomous <autonomous666(a)gmail.com>
wrote:
>
>> I would also add that this type of exhaust fan is not designed for
>> continuous use due to overheating and the potential fire hazard risk. I
>> have a similar type of fan installed in a 4800 sqft building that is
cycled
>> 30 minutes on and 30 minutes off. It can
become quite hot after 30
minutes
>> especially in warm weather.
>>
>> On Wed, Jul 7, 2021 at 5:10 PM Eric O'Connor <eric(a)oco.nnor.org>
wrote:
>>
>>> At the risk of being a downer (but I also know Sudo/Omni is having
>>> insurance issues), I just wanted to point out that Cal Fire code 605.5
>>> recommends against an extension cord going through a ceiling or wall.
>>>
>>>> Extension cords and flexible cords shall not be affixed to
structures,
>>> extended through walls, ceilings or
floors, or under doors or floor
>>> coverings, nor shall such cords be subject to environmental damage or
>>> physical impact.
>>>
>>> As long as it has a drip loop it’s probably fine, but I’m not an
>>> inspector, and haven’t seen the fan either.
>>>
>>> Sorry if this is not helpful for whatever reason. If that is the case,
>>> just add this email to the long list of useless information flowing
around
>>> the internet :)
>>>
>>> On a more positive note: The control system ideas sound rad!
>>>
>>> Eric
>>>
>>> On Wed, Jul 7, 2021, at 13:48, Jake wrote:
>>>> Last night an intrepid cabal of hackers hacked their way through a
>>> skylight to
>>>> install a high-flow ventilation fan on the roof!
>>>>
>>>> The power cord hangs down into sudoroom so that mice and tiny hackers
>>> can
>>>> rappel down into the space rather than use the door like a noob.
Also
>>> the
>>>> power cord can be used to supply power to the fan so that it runs.
>>>>
>>>> It uses 500 watts but is quite powerful. I haven't seen our
electric
>>> bill but
>>>> assuming we're paying about 25 cents per kilowatt-hour, leaving it
on
>>> all the
>>>> time will cost us $3 per day, or $92 dollars per month.
>>>>
>>>> I think that rather than leaving the fan on all the time, we should
>>> create a
>>>> sophisticated control system using a microphone and AI machine
>>> learning to
>>>> detect when people are flapping their mouths (meat talking) in the
>>> space, and
>>>> turn on the fan during those times. We can also measure humidity, or
>>> have a
>>>> camera watching for motion, or even look at network traffic and see
if
>>>> people
>>>>> are using data in the nearby area. I can supply the relay
connected
>>>> to a
>>>>> server where this software can make those decisions.
>>>>>
>>>>> here is a picture of the finished product as viewed by birds. If
you
>>>> want to
>>>>> see what it looks like from below, go into sudoroom and plug it in.
>>>>>
>>>>>
https://sudoroom.org/wiki/File:Sudo_apt_install_vent_fan_on_roof.jpg
>>>>>
>>>>> -jake
>>>>> _______________________________________________
>>>>> sudo-discuss mailing list
>>>>> sudo-discuss(a)lists.sudoroom.org
>>>>> https://sudoroom.org/lists/listinfo/sudo-discuss
>>>>>
>>>> _______________________________________________
>>>> sudo-discuss mailing list
>>>> sudo-discuss(a)lists.sudoroom.org
>>>> https://sudoroom.org/lists/listinfo/sudo-discuss
>>>>
>>> _______________________________________________
>>> sudo-discuss mailing list
>>> sudo-discuss(a)lists.sudoroom.org
>>> https://sudoroom.org/lists/listinfo/sudo-discuss
>>>
>>
> 
7:13 p.m.
The fan is fucking great btw! Imagine not feeling stuffy at sudo during the
summer anymore. 🤯
On Thu, Jul 8, 2021, 1:58 PM Patrik D'haeseleer <patrikd(a)gmail.com> wrote:
Do we have a second fan - ideally one that is
correctly weatherproofed for
roof installation? I'm still thinking to install one on the skylight closer
to CCL as well. Maybe the big one above Sudo is sufficient for the entire
room though - will check next time I'm in.
I know some people may think this goes against the hacker ethos, but I'm
all in favor of using an affordable, ready-made, quiet,
commercial-off-the-shelf solution if available. Bonus if we can avoid
raising eyebrows in the unlikely event that any inspector ever bothers to
go check out the roof.
Patrik
On Thu, Jul 8, 2021, 1:12 PM Jake <jake(a)spaz.org> wrote:
Between myself and another sudoroom member, we
have more than enough solar
panels to greatly offset all of our fan use. There is no need to buy
anything,
only to send volunteers to help configure and install these things. But
that
has to be off-list for technical reasons.
-jake
On Wed, 7 Jul 2021, Patrik D'haeseleer wrote:
_______________________________________________
sudo-discuss mailing list
sudo-discuss(a)lists.sudoroom.org
https://sudoroom.org/lists/listinfo/sudo-discuss
By the way - if any of you roof monkeys are up
there again, it would be
great if someone could also have a look at the exhaust fans above the
entrance hall! Rob mentioned he may have located a switch but didn't
have
time to do any troubleshooting yet - not clear if
they are getting
power,
if the motor is busted, or what. Would be worth
running over a temporary
extension cord to check...
I don't have much time to play on the roof this week, but I'd be happy
to
pay for a solar powered attic fan if someone can
figure out how to mate
it
with the vent in the skylight. Home Depot has a
couple models in the
$200-300 range
<
https://www.homedepot.com/b/Building-Materials-Ventilation-Roofing-Attic-Ve…
.
Patrik
On Wed, Jul 7, 2021 at 4:47 PM Patrik D'haeseleer <patrikd(a)gmail.com>
wrote:
> Yay! How noisy does this fan wind up being when it's running? If I
> remember correctly, this is a 2000 CFM inline duct fan, which seems
> overpowered for use as an exhaust fan.
>
> The power issue is also why I had been looking into solar powered
exhaust
> fans - you can power a 1000 CFM attic fan
fairly easily from just a 15W
> solar panel. (The reason why Jake's fan is 500W is because it's
designed to
> push that 2000 CFM through a network of
ducts.)
>
> We might want to loop in Rob's friend Elon, who knows quite a bit about
> building ventilation, and has been checking out air turnover rates in
the
> building with an eye on reopening for
events.
>
> Patrik
>
> On Wed, Jul 7, 2021 at 3:43 PM Autonomous <autonomous666(a)gmail.com>
wrote:
>
>> I would also add that this type of exhaust fan is not designed for
>> continuous use due to overheating and the potential fire hazard risk.
I
>> have a similar type of fan installed in a
4800 sqft building that is
cycled
>> 30 minutes on and 30 minutes off. It can
become quite hot after 30
minutes
>> especially in warm weather.
>>
>> On Wed, Jul 7, 2021 at 5:10 PM Eric O'Connor <eric(a)oco.nnor.org>
wrote:
>>
>>> At the risk of being a downer (but I also know Sudo/Omni is having
>>> insurance issues), I just wanted to point out that Cal Fire code
605.5
>>> recommends against an extension cord
going through a ceiling or wall.
>>>
>>>> Extension cords and flexible cords shall not be affixed to
structures,
>>> extended through walls, ceilings or
floors, or under doors or floor
>>> coverings, nor shall such cords be subject to environmental damage or
>>> physical impact.
>>>
>>> As long as it has a drip loop it’s probably fine, but I’m not an
>>> inspector, and haven’t seen the fan either.
>>>
>>> Sorry if this is not helpful for whatever reason. If that is the
case,
>>> just add this email to the long list
of useless information flowing
around
>>> the internet :)
>>>
>>> On a more positive note: The control system ideas sound rad!
>>>
>>> Eric
>>>
>>> On Wed, Jul 7, 2021, at 13:48, Jake wrote:
>>>> Last night an intrepid cabal of hackers hacked their way through a
>>> skylight to
>>>> install a high-flow ventilation fan on the roof!
>>>>
>>>> The power cord hangs down into sudoroom so that mice and tiny
hackers
>>> can
>>>> rappel down into the space rather than use the door like a noob.
Also
>>> the
>>>> power cord can be used to supply power to the fan so that it runs.
>>>>
>>>> It uses 500 watts but is quite powerful. I haven't seen our
electric
>>> bill but
>>>> assuming we're paying about 25 cents per kilowatt-hour, leaving it
on
>>> all the
>>>> time will cost us $3 per day, or $92 dollars per month.
>>>>
>>>> I think that rather than leaving the fan on all the time, we should
>>> create a
>>>> sophisticated control system using a microphone and AI machine
>>> learning to
>>>> detect when people are flapping their mouths (meat talking) in the
>>> space, and
>>>> turn on the fan during those times. We can also measure humidity,
or
>>> have a
>>>> camera watching for motion, or even look at network traffic and see
if
>>> people
>>>> are using data in the nearby area. I can supply the relay connected
>>> to a
>>>> server where this software can make those decisions.
>>>>
>>>> here is a picture of the finished product as viewed by birds. If
you
>>> want to
>>>> see what it looks like from below, go into sudoroom and plug it in.
>>>>
>>>>
https://sudoroom.org/wiki/File:Sudo_apt_install_vent_fan_on_roof.jpg
>>>>>
>>>>> -jake
>>>>> _______________________________________________
>>>>> sudo-discuss mailing list
>>>>> sudo-discuss(a)lists.sudoroom.org
>>>>> https://sudoroom.org/lists/listinfo/sudo-discuss
>>>>>
>>>> _______________________________________________
>>>> sudo-discuss mailing list
>>>> sudo-discuss(a)lists.sudoroom.org
>>>> https://sudoroom.org/lists/listinfo/sudo-discuss
>>>>
>>> _______________________________________________
>>> sudo-discuss mailing list
>>> sudo-discuss(a)lists.sudoroom.org
>>> https://sudoroom.org/lists/listinfo/sudo-discuss
>>>
>>
> 
9 Jul
9 Jul
8:39 a.m.
we have more than enough solar panels to greatly
offset all of our fan
use.
i think the idea of the solar panel units was to avoid the cord dangling
down into the space.
getting 3 or 4 of those 1000 cfm solar units would, imo, be perfect.
i'm concerned the fan that's currently installed has poor air flow as it's
blowing directly against a parabolic dish & it's not weather proof (wind +
rain = fan dies)
3:12 p.m.
Robb Please see my previous post about not calling out "problems" unless you
intend to do something about them. That would be my preference.
Thank you!
On Fri, 9 Jul 2021, robb wrote:
we have more
than enough solar panels to greatly offset all of our fan
use.
i think the idea of the solar panel units was to avoid the cord dangling
down into the space.
getting 3 or 4 of those 1000 cfm solar units would, imo, be perfect.
i'm concerned the fan that's currently installed has poor air flow as it's
blowing directly against a parabolic dish & it's not weather proof (wind +
rain = fan dies)
10:02 p.m.
i really appreciate people bringing up concerns, especially related to the
health & safety of all hackers.
i agree it would be most productive if the people who have these concerns
also help do the work.
<a3ngle
On Fri, Jul 9, 2021, 3:13 PM Jake <jake(a)spaz.org> wrote:
Robb Please see my previous post about not calling out
"problems" unless
you
intend to do something about them. That would be my preference.
Thank you!
On Fri, 9 Jul 2021, robb wrote:
it's
we have
more than enough solar panels to greatly offset all of our fan
use.
i think the idea of the solar panel units was to avoid the cord dangling
down into the space.
getting 3 or 4 of those 1000 cfm solar units would, imo, be perfect.
i'm concerned the fan that's currently installed has poor air flow as blowing directly against a parabolic dish &
it's not weather proof (wind
+
rain = fan dies)
_______________________________________________
sudo-discuss mailing list
sudo-discuss(a)lists.sudoroom.org
https://sudoroom.org/lists/listinfo/sudo-discuss
10 Jul
10 Jul
11:05 a.m.
i intend to assist in procuring & installing if we decide to get active
ventilation for the areas of the building w/o it
On Fri, Jul 9, 2021 at 3:12 PM Jake <jake(a)spaz.org> wrote:
Robb Please see my previous post about not calling out
"problems" unless
you
intend to do something about them. That would be my preference.
Thank you!
On Fri, 9 Jul 2021, robb wrote:
it's
we have
more than enough solar panels to greatly offset all of our fan
use.
i think the idea of the solar panel units was to avoid the cord dangling
down into the space.
getting 3 or 4 of those 1000 cfm solar units would, imo, be perfect.
i'm concerned the fan that's currently installed has poor air flow as blowing directly against a parabolic dish &
it's not weather proof (wind
+
rain = fan dies)
8 Jul
8 Jul
1:09 p.m.
I would really prefer if people piping up in this thread to introduce boogeymen
and invoking the words "fire" and "code" and "inspection"
only do so if you're
also going to do something about it. In your case, I suggest installing
temperature sensors on the fan motor so that we can keep track of whether it
becomes a problem.
These fans are intended for grow rooms, where temperatures can be quite hot.
This fan is on our roof, and entirely metal, and I don't see how it can
possibly be a fire hazard.
I have kept quiet after people invoke all sorts of FUD around the electrical
panel upgrades, and instead devoted my energy toward actually getting the work
done, which has gone very well. But the continuing armchair criticism is very
demotivating.
-jake
On Wed, 7 Jul 2021, Autonomous wrote:
I would also add that this type of exhaust fan is not
designed for
continuous use due to overheating and the potential fire hazard risk. I
have a similar type of fan installed in a 4800 sqft building that is cycled
30 minutes on and 30 minutes off. It can become quite hot after 30 minutes
especially in warm weather.
On Wed, Jul 7, 2021 at 5:10 PM Eric O'Connor <eric(a)oco.nnor.org> wrote:
At the risk of being a downer (but I also know
Sudo/Omni is having
insurance issues), I just wanted to point out that Cal Fire code 605.5
recommends against an extension cord going through a ceiling or wall.
Extension cords and flexible cords shall not be
affixed to structures,
extended through walls, ceilings or floors, or under doors
or floor
coverings, nor shall such cords be subject to environmental damage or
physical impact.
As long as it has a drip loop it’s probably fine, but I’m not an
inspector, and haven’t seen the fan either.
Sorry if this is not helpful for whatever reason. If that is the case,
just add this email to the long list of useless information flowing around
the internet :)
On a more positive note: The control system ideas sound rad!
Eric
On Wed, Jul 7, 2021, at 13:48, Jake wrote:
Last night an intrepid cabal of hackers hacked
their way through a
skylight to
install a high-flow ventilation fan on the roof!
The power cord hangs down into sudoroom so that mice and tiny hackers can
rappel down into the space rather than use the door like a noob. Also
the
power cord can be used to supply power to the fan
so that it runs.
It uses 500 watts but is quite powerful. I haven't seen our electric
bill
but
assuming we're paying about 25 cents per
kilowatt-hour, leaving it on
all the
time will cost us $3 per day, or $92 dollars per
month.
I think that rather than leaving the fan on all the time, we should
create a
sophisticated control system using a microphone
and AI machine learning
to
detect when people are flapping their mouths
(meat talking) in the
space, and
turn on the fan during those times. We can also
measure humidity, or
have a
camera watching for motion, or even look at
network traffic and see if
people
are using data in the nearby area. I can supply
the relay connected to a
server where this software can make those decisions.
here is a picture of the finished product as viewed by birds. If you
want to
see what it looks like from below, go into
sudoroom and plug it in.
https://sudoroom.org/wiki/File:Sudo_apt_install_vent_fan_on_roof.jpg
-jake
_______________________________________________
sudo-discuss mailing list
sudo-discuss(a)lists.sudoroom.org
https://sudoroom.org/lists/listinfo/sudo-discuss
_______________________________________________
sudo-discuss mailing list
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1028
days inactive
1031
days old
14 comments
8 participants
participants (8)
-
Angela Miller -
Autonomous -
Cere Misc -
Eric O'Connor -
Jake -
Loren McIntyre -
Patrik D'haeseleer -
robb