1 year timer for furnace filters
Archiver
Posts: 46,084
Greetings Stampers
I've been lurking a long time and learning a lot.
I'm ready to build a project for my furnace to remind me to change the 1-year
filter on my humidifier.
I'd like to have a simple circuit that I could reset with a pushbutton that
simply sounds a buzzer/flashes an LED after 1 year.
I've been scouring Google, but I can't find anything to steer me in the right
direction.
Any ideas ??
Thanks a lot
Greg
[noparse][[/noparse]Non-text portions of this message have been removed]
I've been lurking a long time and learning a lot.
I'm ready to build a project for my furnace to remind me to change the 1-year
filter on my humidifier.
I'd like to have a simple circuit that I could reset with a pushbutton that
simply sounds a buzzer/flashes an LED after 1 year.
I've been scouring Google, but I can't find anything to steer me in the right
direction.
Any ideas ??
Thanks a lot
Greg
[noparse][[/noparse]Non-text portions of this message have been removed]
Comments
Parallax web site, you will see how to use a 32768 Hz watch crystal and a
4060 osc/counter chip to generate pulses every half second. The program
actually counts transitions from low to high and high to low, so there are
4 counts per second.
Recall that in the Stamp, the largest number you can store in a word
variable is 2*16-1 = 65,535
Now, in one hour, there are 60*60 = 3600 seconds, or 14,400 transitions, or
counts.
In one year, there are 24*365.25 = 8766 hours (includes leap years).
Thus you can use two counters - one to count transitions, and one to count
hours.
When the transition counter reaches 14,400, you increment the hours
counter. When the hours counter reaches 8766, one year is up, and you turn
on your LED and sound your buzzer.
The accuracy of this will only be as good as the watch crystal, of course.
Which is probably good enough.
Or you could use the PAUSE command in a loop to do the same thing.
PAUSE 60000 will delay for 1 minute. You do the same as above - count
minutes, when you get 24, increment the hours counter.
The accuracy here will be as good as the resonator in the stamp - not too
good, typically. But probably good enough for this job - after all, what
does it matter if you change the filter a few days too soon or too late?
Larry
At 08:59 AM 12/13/2002 -0700, you wrote:
>Greetings Stampers
>
>I've been lurking a long time and learning a lot.
>
>I'm ready to build a project for my furnace to remind me to change the
>1-year filter on my humidifier.
>I'd like to have a simple circuit that I could reset with a pushbutton
>that simply sounds a buzzer/flashes an LED after 1 year.
>
>I've been scouring Google, but I can't find anything to steer me in the
>right direction.
>
>Any ideas ??
>
>Thanks a lot
>
>Greg
>
>[noparse][[/noparse]Non-text portions of this message have been removed]
>
>
>To UNSUBSCRIBE, just send mail to:
> basicstamps-unsubscribe@yahoogroups.com
>from the same email address that you subscribed. Text in the Subject and
>Body of the message will be ignored.
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Larry Bradley
Orleans (Ottawa), Ontario, CANADA
Although the one year timer thing would be cool
[noparse][[/noparse]Non-text portions of this message have been removed]
wifeless)
Original Message
From: Greg Reyneke [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=to5CLD5UAQ0CH1koUkfnfDX1wD4GRqsRWoMxYRQbF0cgSDp7B6nkBFkJwhib70b0pPqW3i--aKlf-ePKsF-QYBUCqsxqew]greg@i...[/url
Sent: Friday, December 13, 2002 11:00 AM
To: basicstamps@yahoogroups.com
Subject: [noparse][[/noparse]basicstamps] 1 year timer for furnace filters
Greetings Stampers
I've been lurking a long time and learning a lot.
I'm ready to build a project for my furnace to remind me to change the
1-year filter on my humidifier.
I'd like to have a simple circuit that I could reset with a pushbutton that
simply sounds a buzzer/flashes an LED after 1 year.
I've been scouring Google, but I can't find anything to steer me in the
right direction.
Any ideas ??
Thanks a lot
Greg
[noparse][[/noparse]Non-text portions of this message have been removed]
To UNSUBSCRIBE, just send mail to:
basicstamps-unsubscribe@yahoogroups.com
from the same email address that you subscribed. Text in the Subject and
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norm in ft lauderdale
>From: "James R. Parish" <JamesParish@J...>
_________________________________________________________________
The new MSN 8: advanced junk mail protection and 2 months FREE*
http://join.msn.com/?page=features/junkmail
discharge temperature sensor on my forced air duct. in the spring
and fall, it monitors the discharge temperature and interupts the
thermostat from calling for heat.
what it does: it allows the furnace to get up to temperature, then
shuts off the thermosstat so the gas valve closes. the fan then
curculates the heat into the house. if, after a few minutes, the
house still needs heat, AND the temperature has decreased, the heater
runs again.
this reduces the total gas consumption and spreads the heat and
circulation over more minutes and makes the house more comfortable
too !
Since you would only be interupting the thermostat wire, you would
not be getting involved with ANY part of the actual furnace.
At that time, I put on a run meter to monitor total hours the fan
runs.
maybe it's time for an up-grade ?
Air filter pressure switch ?
automated humidity control ?
water leak sensor for the hot water heater ?
data logging of the hot water.......
nope. too much to stuff to add to my list.
Dave
--- In basicstamps@yahoogroups.com, "Greg Reyneke" <greg@i...> wrote:
>
> Greetings Stampers
>
> I've been lurking a long time and learning a lot.
>
> I'm ready to build a project for my furnace to remind me to change
the 1-year filter on my humidifier.
> I'd like to have a simple circuit that I could reset with a
pushbutton that simply sounds a buzzer/flashes an LED after 1 year.
>
> I've been scouring Google, but I can't find anything to steer me in
the right direction.
>
> Any ideas ??
>
> Thanks a lot
>
> Greg
>
> [noparse][[/noparse]Non-text portions of this message have been removed]
I do my annual maintance in September.
get filters and clean it all up nice n purdy
before I NEED it.
Dave
--- In basicstamps@yahoogroups.com, smartdim@a... wrote:
> Or why not do it January first - a date easy to remember.
>
> Although the one year timer thing would be cool
>
>
> [noparse][[/noparse]Non-text portions of this message have been removed]
should be changed every 90 days [noparse]:)[/noparse]
Stan
--- In basicstamps@yahoogroups.com, "Greg Reyneke" <greg@i...> wrote:
>
> Greetings Stampers
>
> I've been lurking a long time and learning a lot.
>
> I'm ready to build a project for my furnace to remind me to change the 1-year
filter on my humidifier.
> I'd like to have a simple circuit that I could reset with a pushbutton that
simply sounds a buzzer/flashes an LED after 1 year.
>
> I've been scouring Google, but I can't find anything to steer me in the right
direction.
>
> Any ideas ??
>
> Thanks a lot
>
> Greg
>
> [noparse][[/noparse]Non-text portions of this message have been removed]
Maybe you could use a photocell pointed at the sky. Get the right
day-night sensitivity, count to 364 (or 365). You could use a BASIC
Stamp 1 or 2 to do the counting. Give it something else to do that
the same time, say, to remind you when to pay taxes and when to put
out the trash. You could do it with a simple counter, but decoding
the number 365 would take a handful of additional chips.
-- Tracy
>Greetings Stampers
>
>I've been lurking a long time and learning a lot.
>
>I'm ready to build a project for my furnace to remind me to change
>the 1-year filter on my humidifier.
>I'd like to have a simple circuit that I could reset with a
>pushbutton that simply sounds a buzzer/flashes an LED after 1 year.
>
>I've been scouring Google, but I can't find anything to steer me in
>the right direction.
>
>Any ideas ??
>
>Thanks a lot
>
>Greg
>
how simple can you get ?
Another idea is that one could put a timer or any loooong duration,
say a week or more, with very poor accuracy, and just wait until the
unit did not run for that long time. ie: summer. then, as soon as
it fires up in the first cold day voila !
Dave
--- In basicstamps@yahoogroups.com, Tracy Allen <tracy@e...> wrote:
> Hi Greg,
>
> Maybe you could use a photocell pointed at the sky. Get the right
> day-night sensitivity, count to 364 (or 365). You could use a
BASIC
> Stamp 1 or 2 to do the counting. Give it something else to do that
> the same time, say, to remind you when to pay taxes and when to put
> out the trash. You could do it with a simple counter, but decoding
> the number 365 would take a handful of additional chips.
>
> -- Tracy
>
>
> >Greetings Stampers
> >
> >I've been lurking a long time and learning a lot.
> >
> >I'm ready to build a project for my furnace to remind me to change
> >the 1-year filter on my humidifier.
> >I'd like to have a simple circuit that I could reset with a
> >pushbutton that simply sounds a buzzer/flashes an LED after 1 year.
> >
> >I've been scouring Google, but I can't find anything to steer me
in
> >the right direction.
> >
> >Any ideas ??
> >
> >Thanks a lot
> >
> >Greg
> >
>I'm ready to build a project for my furnace to remind me to change the
>1-year filter on my humidifier.
>I'd like to have a simple circuit that I could reset with a pushbutton
>that simply sounds a buzzer/flashes an LED after 1 year.
If you want a small and inexpensive solution consider using something like
a PIC 12c508 with a few lines of PicBasic code. Use the 60 Hz line as your
clock source for long term accuracy. You would probably want to add
battery backup so that the current time elapsed since the start of the
timing period is not lost if (when) a power failure occurs.
If you need help writing the code, head over to the Pic Basic forum and
post the request there. You will have to subscribe to the list by sending
a message to: majordomo@q...
with this text in its body: subscribe picbasic-l .
The bottom line is that you can replace that expensive Stamp with a $2.00
PIC in this very simple application.
dwayne
--
Dwayne Reid <dwayner@p...>
Trinity Electronics Systems Ltd Edmonton, AB, CANADA
(780) 489-3199 voice (780) 487-6397 fax
Celebrating 18 years of Engineering Innovation (1984 - 2002)
.-. .-. .-. .-. .-. .-. .-. .-. .-. .-
`-' `-' `-' `-' `-' `-' `-' `-' `-'
Do NOT send unsolicited commercial email to this email address.
This message neither grants consent to receive unsolicited
commercial email nor is intended to solicit commercial email.
>
> Hi Greg,
>
> Maybe you could use a photocell pointed at the sky. Get the right
> day-night sensitivity, count to 364 (or 365). You could use a BASIC
> Stamp 1 or 2 to do the counting. Give it something else to do that
> the same time, say, to remind you when to pay taxes and when to put
> out the trash. You could do it with a simple counter, but decoding
> the number 365 would take a handful of additional chips.
Ahhh, but you'd have to put in additional circuitry to account for
predicted eclipses in your region, and maybe extra circuitry to provide
an "unexpected eclipse" button, as well. After all, if some absolutely
humongous but so far unplotted celestial body gets between us and the
sun, this circuit will fail. If you really wanted to do this right,
you'd throw in a GPS and try to shoehorn in a celestial navigation
program. Based upon your measured location, you could account for known
eclipses at your location and prompt the user (maybe via email, maybe
via a companion onboard web site?) when you experience one of those
unexplained celestial phenomena...
Seriously, if you wanted this project to actually have value, shouldn't
it provide a count of how many hours the fan has run? Even hetter, how
many cubic feet of air have passed through the filter? Throw in some
sensing to determine actual particulate pollution and you should
*really* be able to judge filter state...
- peterd
>
> -- Tracy
>
> >Greetings Stampers
> >
> >I've been lurking a long time and learning a lot.
> >
> >I'm ready to build a project for my furnace to remind me to change
> >the 1-year filter on my humidifier.
> >I'd like to have a simple circuit that I could reset with a
> >pushbutton that simply sounds a buzzer/flashes an LED after 1 year.
> >
> >I've been scouring Google, but I can't find anything to steer me in
> >the right direction.
> >
> >Any ideas ??
> >
> >Thanks a lot
> >
> >Greg
> >
>
> To UNSUBSCRIBE, just send mail to:
> basicstamps-unsubscribe@yahoogroups.com
> from the same email address that you subscribed. Text in the Subject and Body
of the message will be ignored.
>
>
> Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
--
Peter Deutsch pdeutsch@g...
Gydig Software
"Time will end all of my troubles, but I don't
always approve of time's methods..."
I would put me a note on my smoke alarm -- since you are supposed to change
them when you change your clocks for daylight savings time, you would
remember the filter as well.
Original Message
> > Maybe you could use a photocell pointed at the sky. Get the right
> > day-night sensitivity, count to 364 (or 365). You could use a BASIC
> > Stamp 1 or 2 to do the counting. Give it something else to do that
> > the same time, say, to remind you when to pay taxes and when to put
> > out the trash. You could do it with a simple counter, but decoding
> > the number 365 would take a handful of additional chips.
>
> Ahhh, but you'd have to put in additional circuitry to account for
> predicted eclipses in your region, and maybe extra circuitry to provide
> an "unexpected eclipse" button, as well. After all, if some absolutely
> humongous but so far unplotted celestial body gets between us and the
> sun, this circuit will fail. If you really wanted to do this right,
> you'd throw in a GPS and try to shoehorn in a celestial navigation
> program. Based upon your measured location, you could account for known
> eclipses at your location and prompt the user (maybe via email, maybe
> via a companion onboard web site?) when you experience one of those
> unexplained celestial phenomena...
>
> Seriously, if you wanted this project to actually have value, shouldn't
> it provide a count of how many hours the fan has run? Even hetter, how
> many cubic feet of air have passed through the filter? Throw in some
> sensing to determine actual particulate pollution and you should
> *really* be able to judge filter state...
> Save 50 bucks, change them on your wife's birthday. (Or yours if you are
> wifeless)
Which you may very well be after your wife realizes you are
associating her birthday with hot air...
Our government it seems has got a new plan...
Seize and search the private records of every man.
No warrants, no judges, no due process required,
With "Homeland Security" the 4th Amendment's retired.
"Total Information Awareness" the project is called,
Oh would our forefathers be aghast and appalled!
http://geocities.com/totalinformationawareness/
mburr@b... writes:
> James R. Parish wrote:
>
> >Save 50 bucks, change them on your wife's birthday. (Or yours if you are
> >wifeless)
>
> Which you may very well be after your wife realizes you are
> associating
Hot air!! I almost fell out of my chair. That was very funny!
[noparse][[/noparse]Non-text portions of this message have been removed]
And all of you would be surprised. It seems that the timer devices that
are distributed with thermostats, for that purpose, are clumsy, and
badly built. So this idea, and thread are well merited. By the way, what
kind of furnace are we talking about? Oil fired? Or gas? I prefer a gas
type. Forced hot air, as a matter of fact.
Gregg C Levine hansolofalcon@w...
"The Force will be with you...Always." Obi-Wan Kenobi
"Use the Force, Luke."· Obi-Wan Kenobi
(This company dedicates this E-Mail to General Obi-Wan Kenobi )
(This company dedicates this E-Mail to Master Yoda )
>
Original Message
> From: smartdim@a... [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=tBiRa9KyIiQ3-TnS5wys3jOiaAGBqj75Bb6YONYFyThiNVC2SOhbpHfxEeuxusNHoiwzHBhlLPSox20]smartdim@a...[/url
> Sent: Friday, December 13, 2002 8:01 PM
> To: basicstamps@yahoogroups.com
> Subject: Re: [noparse][[/noparse]basicstamps] 1 year timer for furnace filters
>
> In a message dated 12/13/2002 3:33:04 PM Pacific Standard Time,
> mburr@b... writes:
>
> > James R. Parish wrote:
> >
> > >Save 50 bucks, change them on your wife's birthday. (Or yours if
you are
> > >wifeless)
> >
> > Which you may very well be after your wife realizes you are
> > associating
>
> Hot air!! I almost fell out of my chair. That was very funny!
>
>
> [noparse][[/noparse]Non-text portions of this message have been removed]
>
>
> To UNSUBSCRIBE, just send mail to:
> basicstamps-unsubscribe@yahoogroups.com
> from the same email address that you subscribed. Text in the Subject
and Body of
> the message will be ignored.
I thought
I'd throw in my "two bits" as well.
I'd probably use a small MCU that controls a real time clock chip.
A Dallas Semi (Maxim) 1 wire real time clock chip, controlled by a small MCU
(your choice lots of different stamps to choose from) would be accurate to
within a few minutes (worst case) a year.
Actually, you could probably run it off a lithium battery for the whole year
as well, but a AC power supply with a simple battery backup would be
sufficient.
Accuracy would depend on the 32khz crystal the RTC chip is using. Typically
you gain or lose a bit (a few seconds) per month, but you could use a
trimmer potentiometer or capacitor to tune even this error a little. But
temperature or voltage changes would still cause a small time error to creep
in.
Anyway I doubt being off a few minutes in a year would be important.
Take a look at the www.maxim-ic.com RTC 1-wire chips DS2417 DS2415 and
DS2404. One of these would work well for that purpose. The DS2404 is a bit
of overkill, but it makes it easy to hook up a battery backup for the chip.
Thus the circuit could loose power but the RTC chip would keep on ticking.
Then when power comes back, the MCU just has to start reading the date,
waiting for your year mark.
Hummm...You could hook up a LCD display, and have it remind you when a
anniversary is due, birthday's, besides just changing the furnace filters.
I'd probably have it start reminding a week in advance though.
Another method would be based on one of the NS1000 experiments from
Parallax's documents, where you use a 32khz clock divided down to 1 second
pulses, and the MCU counts the pulses and keeps time. You could use it to
track annual changes as well.
Original Message
From: Greg Reyneke [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=LHrC1BTf9P6JLJfGZaRE4YDc8VHAErbMY_efUG51QWI_q9bvNgUUxvZPRNsZZowtGEmHDqsGu7tQkXbXFr7uSBdpm50]greg@i...[/url
Sent: Friday, December 13, 2002 10:00 AM
To: basicstamps@yahoogroups.com
Subject: [noparse][[/noparse]basicstamps] 1 year timer for furnace filters
Greetings Stampers
I've been lurking a long time and learning a lot.
I'm ready to build a project for my furnace to remind me to change the
1-year filter on my humidifier.
I'd like to have a simple circuit that I could reset with a pushbutton that
simply sounds a buzzer/flashes an LED after 1 year.
I've been scouring Google, but I can't find anything to steer me in the
right direction.
Any ideas ??
Thanks a lot
Greg
[noparse][[/noparse]Non-text portions of this message have been removed]
To UNSUBSCRIBE, just send mail to:
basicstamps-unsubscribe@yahoogroups.com
from the same email address that you subscribed. Text in the Subject and
Body of the message will be ignored.
Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
everything. You can put in any kind of repeating (or non-repeating)
event, whether it is every day, week, month, year, last Wedesday of
the month, etc. and tell it to send you email reminders (up to two)
in advance of the event. I use it for all my family birthdays,
anniversaries, car insurance renewals, Dr's appointments, and more.
I have it on my Yahoo "home page", which has a lot of other features
that I use every day (yellow pages, map, driving directions, phone
book, stock porfolio, etc.) I am a big fan.
--- In basicstamps@yahoogroups.com, "Greg Reyneke" <greg@i...> wrote:
>
> Greetings Stampers
>
> I've been lurking a long time and learning a lot.
>
> I'm ready to build a project for my furnace to remind me to change
the 1-year filter on my humidifier.
> I'd like to have a simple circuit that I could reset with a
pushbutton that simply sounds a buzzer/flashes an LED after 1 year.
>
> I've been scouring Google, but I can't find anything to steer me in
the right direction.
>
> Any ideas ??
>
> Thanks a lot
>
> Greg
>
> [noparse][[/noparse]Non-text portions of this message have been removed]
the 1-year filter on my humidifier.
> I'd like to have a simple circuit that I could reset with a
pushbutton that simply sounds a buzzer/flashes an LED after 1 year.
Let me see if I understand your proposed project. You want to spend 50+
dollars to remind yourself to change furnace filters? There is a device that
will do this for you for around 2 dollars. It can be found in most malls in
small kiosks, especially at this time of year, and comes in various sizes
and shapes. It is called a CALENDER. Simply place a large red X on the date
selected for filter changing and thats it. Very low maintance and uses no
power so new batteries and resetting is never needed. It can be used to
remind you of many dates throughout the year, not simply dedicated to one
special event. Be sure to place another large red X to remind you to buy
another calender for next year. Repeat the red Xing subroutine on the new
one. The 50 bucks (not counting new batteries) will buy you 25 calenders
after which you probably won't give a damn about furnace filters.
HTH
Vic
________________________________________________________
Victor Fraenckel - The Windman vfraenc1@n...
KC2GUI www.windsway.com
Home of the WindReader Electronic Theodolite
Read the WIND
"Victory at all costs, victory in spite of all terror, victory however long
and hard the road may be; for without victory there is no survival."
- Winston [noparse][[/noparse]Leonard Spencer] Churchill (1874 - 1965)
Dost thou not know, my son, with how little wisdom the world is governed?
-Count Oxenstierna (ca 1620)
Mudd's wife...
Original Message
> > I'm ready to build a project for my furnace to remind me to change
> the 1-year filter on my humidifier.
> > I'd like to have a simple circuit that I could reset with a
> pushbutton that simply sounds a buzzer/flashes an LED after 1 year.
>
> Let me see if I understand your proposed project. You want to spend 50+
> dollars to remind yourself to change furnace filters? There is a device
that
> will do this for you for around 2 dollars. It can be found in most malls
in
> small kiosks, especially at this time of year, and comes in various sizes
> and shapes. It is called a CALENDER. Simply place a large red X on the
date
> selected for filter changing and thats it. Very low maintance and uses no
> power so new batteries and resetting is never needed. It can be used to
> remind you of many dates throughout the year, not simply dedicated to one
> special event. Be sure to place another large red X to remind you to buy
> another calender for next year. Repeat the red Xing subroutine on the new
> one. The 50 bucks (not counting new batteries) will buy you 25 calenders
> after which you probably won't give a damn about furnace filters.
the following may interest you.
Hi Greg,
As you had mentioned furnace, I assume you are referring to a humidifier
that is not freestanding but attached to the heating system of your
home.
Perhaps a more worthwhile endeavor would be to sense the differential
air pressure on both sides of the humidifier element. This will alert
you when it needs to be changed or cleaned with muriatic acid. This
will work on both powered and non-powered humidifiers.
Powered humidifiers instal in the hot air duct (plenum chamber) above
the furnace and have their own blower to move hot air through the
element. Non-powered humidifiers use the air pressure created by the
furnace blower to shunt some of the hot air from the plenum chamber to
the blower intake and need no supplemental blower.
Most of the yearly replacement/cleaning schedules have you
replacing/cleaning an element long overdue for maintenance. Many of the
folks that dream up these schedules do not consider things like total
dissolved solids in the water supply, regional outside air temps and
relative humidity, etc....
In lieu of a fixed schedule, humidifier element maintenance schedules
may vary throughout the year as total dissolved solids in the water
supply change seasonally (provided that you are using a municipal water
supply).
As the season shifts from a light duty heating cycles to more frequent
cycling the humidifier performance can rapidly decay. Drafting, or the
amount of cold air replacing the interior humidified furnace combustion
air going up the stack can place tremendous loads on the humidifier.
The colder the outside air temperature the lower the relative humidity
of the draft air once heated to 72DegF. So the outside air temperature,
it's relative humidity and the amount of drafting through the home can
vary a great deal in different areas of the country.
Where in some areas yearly maintenance is sufficient, other areas need
monthly maintenance for the humidifier to maintain a comfortable
environment.
A Stamp humidifier maintenance alert system may not be such a bad idea
after all. Especially if mid heating season you have been developing
dry skin problems and are zapping the cat and your computer.
Don
Greg Reyneke wrote:
>
> Greetings Stampers
>
> I've been lurking a long time and learning a lot.
>
> I'm ready to build a project for my furnace to remind me to change the 1-year
filter on my humidifier.
> I'd like to have a simple circuit that I could reset with a pushbutton that
simply sounds a buzzer/flashes an LED after 1 year.
>
> I've been scouring Google, but I can't find anything to steer me in the right
direction.
>
> Any ideas ??
>
> Thanks a lot
>
> Greg
>
> [noparse][[/noparse]Non-text portions of this message have been removed]
>
> To UNSUBSCRIBE, just send mail to:
> basicstamps-unsubscribe@yahoogroups.com
> from the same email address that you subscribed. Text in the Subject and Body
of the message will be ignored.
>
>
> Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
indulging in your hobby. You do these things simply because you CAN. Its not
changing the furnace filters that is important, its making a gizmo that does
something and learning new things in the process.
I've made a few massive overkill things now. Not because they needed to be
done, no, not at all. Its because its something I could think of and figure
out how to do.
Original Message
From: "Vic Fraenckel" <vfraenc1@n...>
To: "BasicStamps" <basicstamps@yahoogroups.com>
Sent: Monday, December 16, 2002 2:25 AM
Subject: [noparse][[/noparse]basicstamps] Re: 1 year timer for furnace filters
> Let me see if I understand your proposed project. You want to spend 50+
> dollars to remind yourself to change furnace filters? There is a device
that
> will do this for you for around 2 dollars. It can be found in most malls
in
> small kiosks, especially at this time of year, and comes in various sizes
> and shapes. It is called a CALENDER. Simply place a large red X on the
date
> selected for filter changing and thats it. Very low maintance and uses no
> power so new batteries and resetting is never needed. It can be used to
> remind you of many dates throughout the year, not simply dedicated to one
> special event. Be sure to place another large red X to remind you to buy
> another calender for next year. Repeat the red Xing subroutine on the new
> one. The 50 bucks (not counting new batteries) will buy you 25 calenders
> after which you probably won't give a damn about furnace filters.
>
> HTH
>
> Vic
> ________________________________________________________
>
> Victor Fraenckel - The Windman vfraenc1@n...
> KC2GUI
www.windsway.com
>
> Home of the WindReader Electronic Theodolite
> Read the WIND
>
> "Victory at all costs, victory in spite of all terror, victory however
long
> and hard the road may be; for without victory there is no survival."
> - Winston [noparse][[/noparse]Leonard Spencer] Churchill (1874 - 1965)
>
> Dost thou not know, my son, with how little wisdom the world is governed?
> -Count Oxenstierna (ca 1620)
>
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Not quite. In the episode, "I, Mudd", he simply created an android
version of Stella, such that he felt obligated to be reminded of the
shewish female. Not that it matters here, but your comparison was half
there.
Gregg C Levine hansolofalcon@w...
"The Force will be with you...Always." Obi-Wan Kenobi
"Use the Force, Luke."· Obi-Wan Kenobi
(This company dedicates this E-Mail to General Obi-Wan Kenobi )
(This company dedicates this E-Mail to Master Yoda )
>
Original Message
> From: Rodent [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=8819mym_p1YDKW3fOLgwOMxmTotGRj-qhmsJ7-71aE9aZ1jJ-K-WdrteyK0yftJZboLExCOO6aIYNxjr]daweasel@s...[/url
> Sent: Monday, December 16, 2002 6:01 AM
> To: basicstamps@yahoogroups.com
> Subject: Re: [noparse][[/noparse]basicstamps] Re: 1 year timer for furnace filters
>
> I keep thinking of the Star Trek episode where they make an android
of Harry
> Mudd's wife...
>
>
Original Message
>
> > > I'm ready to build a project for my furnace to remind me to
change
> > the 1-year filter on my humidifier.
> > > I'd like to have a simple circuit that I could reset with a
> > pushbutton that simply sounds a buzzer/flashes an LED after 1
year.
> >
> > Let me see if I understand your proposed project. You want to
spend 50+
> > dollars to remind yourself to change furnace filters? There is a
device
> that
> > will do this for you for around 2 dollars. It can be found in most
malls
> in
> > small kiosks, especially at this time of year, and comes in
various sizes
> > and shapes. It is called a CALENDER. Simply place a large red X on
the
> date
> > selected for filter changing and thats it. Very low maintance and
uses no
> > power so new batteries and resetting is never needed. It can be
used to
> > remind you of many dates throughout the year, not simply dedicated
to one
> > special event. Be sure to place another large red X to remind you
to buy
> > another calender for next year. Repeat the red Xing subroutine on
the new
> > one. The 50 bucks (not counting new batteries) will buy you 25
calenders
> > after which you probably won't give a damn about furnace filters.
>
>
>
>
This message is being sponsored by KDY, the company that moves faster
then light.
strands him on the planet with her.
Original Message
Not quite. In the episode, "I, Mudd", he simply created an android
version of Stella, such that he felt obligated to be reminded of the
shewish female. Not that it matters here, but your comparison was half
there.
> I keep thinking of the Star Trek episode where they make an android
of Harry
> Mudd's wife...
Nope. Still wrong. They do strand him there, but as it happens, the
androids copies of Stella, were indeed already created. Well one was.
They just used the existing patterns to make about 499 more of them.
What's wrong is your interpretation of the facts. I remember the
episode very well. And please, when you refer to something that I've
posted, please include my name.
Gregg C Levine hansolofalcon@w...
"The Force will be with you...Always." Obi-Wan Kenobi
"Use the Force, Luke."· Obi-Wan Kenobi
(This company dedicates this E-Mail to General Obi-Wan Kenobi )
(This company dedicates this E-Mail to Master Yoda )
>
Original Message
> From: Rodent [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=CESp56r0BOsQKBc2bTvZ-_UwiRP1YtnGGxwQMIFkGE-T4c3V3zSGAxjSYQDf13Aoqc_zGf1vogPF-FFP]daweasel@s...[/url
> Sent: Tuesday, December 17, 2002 5:28 PM
> To: basicstamps@yahoogroups.com
> Subject: Re: [noparse][[/noparse]basicstamps] Re: 1 year timer for furnace filters
>
> In one episode the crew makes or reprograms a wife android at the
end and
> strands him on the planet with her.
>
>
Original Message
>
> Not quite. In the episode, "I, Mudd", he simply created an android
> version of Stella, such that he felt obligated to be reminded of the
> shewish female. Not that it matters here, but your comparison was
half
> there.
>
> > I keep thinking of the Star Trek episode where they make an
android
> of Harry
> > Mudd's wife...
>
>
This message is supporting the Rebel Alliance to Restore the Republic.
little known fact was that in that episode there was one scene where
Kirk and Mudd were walking around the facility and passed by a guy
programming a android. he was using PBASIC !!!!!
those androids were all STAMPS in action !
--- In basicstamps@yahoogroups.com, "Gregg C Levine"
<hansolofalcon@w...> wrote:
> Hello from Gregg C Levine
> Nope. Still wrong. They do strand him there, but as it happens, the
> androids copies of Stella, were indeed already created. Well one
was.
> They just used the existing patterns to make about 499 more of them.
> What's wrong is your interpretation of the facts. I remember the
> episode very well. And please, when you refer to something that I've
> posted, please include my name.
>
> Gregg C Levine hansolofalcon@w...
>
> "The Force will be with you...Always." Obi-Wan Kenobi
> "Use the Force, Luke."· Obi-Wan Kenobi
> (This company dedicates this E-Mail to General Obi-Wan Kenobi )
> (This company dedicates this E-Mail to Master Yoda )
>
>
>
> >
Original Message
> > From: Rodent [noparse][[/noparse]mailto:daweasel@s...]
> > Sent: Tuesday, December 17, 2002 5:28 PM
> > To: basicstamps@yahoogroups.com
> > Subject: Re: [noparse][[/noparse]basicstamps] Re: 1 year timer for furnace filters
> >
> > In one episode the crew makes or reprograms a wife android at the
> end and
> > strands him on the planet with her.
> >
> >
Original Message
> >
> > Not quite. In the episode, "I, Mudd", he simply created an android
> > version of Stella, such that he felt obligated to be reminded of
the
> > shewish female. Not that it matters here, but your comparison was
> half
> > there.
> >
> > > I keep thinking of the Star Trek episode where they make an
> android
> > of Harry
> > > Mudd's wife...
> >
> >
> This message is supporting the Rebel Alliance to Restore the
Republic.
B. I would NOT change the crystal
C. I would use Unix time with a one minute tick that can easily handle this for roughly the next 50 years in Forth, but the format is 32bit. So the Propeller make it much simpler to set up.
https://en.wikipedia.org/wiki/Unix_time
Anytime you forget how to convert Unix time, there are websites that can do it for you. Or a Linux computer will do the conversion if a simple utility is loaded.
===========
The items to address would be
1. Getting a one minute tick in Forth to add to a pre-set time and date that accepts a 32bit interger value.
2.Setting up an alarm indicator that triggers every year, maybe a latching relay to a light that would need to be reset by you when the filter is changed.
Learn to manage the system in Forth. For timing there will be some drift in accuracy due to crystal precision. Forth can allow you to plug in via USB anytime you need to service the unit. Or you can go wireless with eithr a BlueTooth device such as an HC-05 or a wifi device that provided either serial or USB (I use a hacked TP-Link MR3020 that has both).
Shopping list
1. Propeller board with USB
2. 5VDC latching relay ( that supposedly work at 3.3VDC, see Erco) -- Electronic Goldmine
3. Buzz or light of your choice.
4. 12 volt Gel cell - Lead Acid
5. 13.5 volt 1amp wall wart to trickle charge the Gel cell direct
6. Switching voltage converter that will handle about 15 VDC max and supply either 7.5V or 5.0 VDC to the Propeller board of your choice.
7. A plastic food container big enough to put it all in.
8. Blocking diode to prevent the Lead Acid cell from discharging if wall wart is unplugged.
9. Push button to pulse the latching relay for a reset.
This set up would allow you to add more latching relays and more alarms for other tasks. The shortest period would be one minute.
Once a year is easy. It gets a bit more complex for same calendar dates as months vary and require further calculation. Same day of the week similarly with give you a programing education. Nonetheless, Forth makes it all very easy to learn and verify. It is interactive. It also allows you to override.
Same scheme can be used for house lights while on vacation, lawn irrigation, and much more. NO Real time clock required as the Propeller is your real time clock and the power supply will operate for extended blackouts of weeks, maybe months.
That just means that the OP has had 12 testing cycles and needs to report back.
In any case, I just use Google calendar. You can add an event with an email reminder. Takes less than 30 seconds.
But my suggestion for using a Propeller and Unix time will work for anything that has to run various timers from a battery source. It could run from a car battery for a very long time or from a solar recharger.
Yep, my Android phone would be best for a furnace filter remainder.
Latching relays use a pulse to toggle, so there is much less power used than having to hold a coil 24/7 in an on position.