Sprinkler Sample Code
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Hi Edward!
It would be very easy by simply adding the "Pocketwatch B" from Parallax from
which you will get an accurate and reliable link onto the actual time, then,
with
the "if...then" command you just have to compare a presetted start-time with the
actual time supplyed to stamp by the "pocketwatch" and compare both, if they're
equal, then the sprinklers start until the next time comparaison or presetted
stop-time.
I have just received my pocketwatch (cat# 27962) and I saved lot of code, time
and
space on the stamp'seeprom.
Have fun!
Rene
Edward a
It would be very easy by simply adding the "Pocketwatch B" from Parallax from
which you will get an accurate and reliable link onto the actual time, then,
with
the "if...then" command you just have to compare a presetted start-time with the
actual time supplyed to stamp by the "pocketwatch" and compare both, if they're
equal, then the sprinklers start until the next time comparaison or presetted
stop-time.
I have just received my pocketwatch (cat# 27962) and I saved lot of code, time
and
space on the stamp'seeprom.
Have fun!
Rene
Edward a
Comments
for a programmable sprinkler system and drip irrigation system. If
you could point me to a web link that has the code or a logic diagram
that would also be helpful. I understand how to turn the sprinkler
zone on, but I an't quite get a handle on how to deal when to turn
the sprinklers on based upon a pre-set time, and duration.
carl
I thought about the RTC and plan to use it. As far as the presets
for zone time (on and off), is there a way to have an area in memory
in which I can store the presets or download new presets when needed
or would I have to upload an entire program everytime I want to
change presets?
Edward
q127238@y...
--- In basicstamps@yahoogroups.com, rene genest <rene.genest@q...>
wrote:
> Hi Edward!
>
> It would be very easy by simply adding the "Pocketwatch B" from
Parallax from
> which you will get an accurate and reliable link onto the actual
time, then, with
> the "if...then" command you just have to compare a presetted start-
time with the
> actual time supplyed to stamp by the "pocketwatch" and compare
both, if they're
> equal, then the sprinklers start until the next time comparaison or
presetted stop-time.
> I have just received my pocketwatch (cat# 27962) and I saved lot of
code, time and
> space on the stamp'seeprom.
>
> Have fun!
>
> Rene
>
> Edward a
can use READ to retrieve this data and WRITE to save changes. By storing your
irrigation program in EEPROM, it won't be lost during power outages.
I spent the first 14 years of my professional sprinkler controller development
for Toro, and even the simplest products required some fairly tricky
engineering. As I frequently point out in my Nuts & Volts column, starting with
a solid specification is important. For a sprinkler timer you have to keep
track of the time, the day, then know when to start a sequence, on what day (you
may not be allowed to irrigate every day and most cases it's not good for the
grass to do so [noparse][[/noparse]infrequent watering encourages deep roots]), and in some cases
you may not have all stations involved in a sequence (you might have one
sequence for the front lawn, another for the back lawn, a third for shrubs) ...
and what if it rains? Will you have a rain sensor input that will stop the
sprinklers when it's raining? In some areas rain shut-down is required by law
(the easiest way is to break the valve common, but the controller doesn't know
what's happening).
Finally ... underground valve wiring is a great "antenna" for radiated energy
(i.e., lightning strikes, even many miles away). If you move forward I would
suggest optical protection of your Stamp output pins and really beefy triacs on
the output stage (look into the MOC3010/3012).
I hope these thoughts are helpful.
-- Jon Williams
-- Applications Engineer, Parallax
-- Dallas Office
Original Message
From: Edward [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=o9y5km1rgRFxGidpCWHwmfXyj47FxcGwl9OIAXCNgnhzZpKoyfEupSyc-6HmnRV_79jhxRJOtDkh]bidder3@h...[/url
Sent: Wednesday, November 05, 2003 8:39 AM
To: basicstamps@yahoogroups.com
Subject: [noparse][[/noparse]basicstamps] Re: Sprinkler Sample Code
Thanks Rene,
I thought about the RTC and plan to use it. As far as the presets
for zone time (on and off), is there a way to have an area in memory
in which I can store the presets or download new presets when needed
or would I have to upload an entire program everytime I want to
change presets?
Edward
q127238@y...
--- In basicstamps@yahoogroups.com, rene genest <rene.genest@q...>
wrote:
> Hi Edward!
>
> It would be very easy by simply adding the "Pocketwatch B" from
Parallax from
> which you will get an accurate and reliable link onto the actual
time, then, with
> the "if...then" command you just have to compare a presetted start-
time with the
> actual time supplyed to stamp by the "pocketwatch" and compare
both, if they're
> equal, then the sprinklers start until the next time comparaison or
presetted stop-time.
> I have just received my pocketwatch (cat# 27962) and I saved lot of
code, time and
> space on the stamp'seeprom.
>
> Have fun!
>
> Rene
>
> Edward a
Yes, you can store your pre-set values, and can change them via keypad or
switches or whatever. Even if the power goes out your stored values will be
fine. No need to connect to a computer and re-program.
Jonathan
www.madlabs.info
Original Message
From: "Edward" <bidder3@h...>
To: <basicstamps@yahoogroups.com>
Sent: Wednesday, November 05, 2003 6:39 AM
Subject: [noparse][[/noparse]basicstamps] Re: Sprinkler Sample Code
> Thanks Rene,
>
> I thought about the RTC and plan to use it. As far as the presets
> for zone time (on and off), is there a way to have an area in memory
> in which I can store the presets or download new presets when needed
> or would I have to upload an entire program everytime I want to
> change presets?
>
> Edward
> q127238@y...
>
>
> --- In basicstamps@yahoogroups.com, rene genest <rene.genest@q...>
> wrote:
> > Hi Edward!
> >
> > It would be very easy by simply adding the "Pocketwatch B" from
> Parallax from
> > which you will get an accurate and reliable link onto the actual
> time, then, with
> > the "if...then" command you just have to compare a presetted start-
> time with the
> > actual time supplyed to stamp by the "pocketwatch" and compare
> both, if they're
> > equal, then the sprinklers start until the next time comparaison or
> presetted stop-time.
> > I have just received my pocketwatch (cat# 27962) and I saved lot of
> code, time and
> > space on the stamp'seeprom.
> >
> > Have fun!
> >
> > Rene
> >
> > Edward a
The EEPROM map memory get the program code from the bottom to the top
and writing datas on that eeprom start from the to of the map to the bottom, so
by using the command "write " , you will wride your start & stop time on a
"non volatile memory" . You can see it from the menu of your stamp editor on the
"run" submenu, check for "memory map" or sometime with the command Ctrl+m.
Hope it will help!
Rene
Edward a