power monitor
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Posts: 46,084
I am new to the Basic stamp. have some medical problems and take quite
a few medications every day and tire easily. I have a detached shop and
I wanted to monitor some 110 & 220 Volt things. I some times go in the
house to rest and may not go out to the shop again that day. From what I
have read I think it would be quite easy to have one stamp out in the
shop and one in the house that are hooked up by I2C. Now the question
here is what size wire is needed and what length can one use? 1000 feet?
2000 feet?
The reason for the long length is I have another thought in mind for a
later project.
Next what is the least expensive way to monitor 110 or 220 volts and go
direct to a stamp input.
The Idea would be to have a stamp in the house that would have several
LEDs connected to the outputs to tell what is on or is it below
freezing.
If I under stand right the stamp output cannot drive an LED directly?
Yes or No?
can I get by with just the basic stamp chip or am I going to have to
have some support chips?
It is not that I am lazy but winter is almost here in Wisconsin and if I
do not need to get dressed up to go out and check things when it is a 30
below wind chill and a 30 MPH wind with snow 2 foot deep and drifting.
I think it would be a pain for even a healthy person.
Bob nelson
a few medications every day and tire easily. I have a detached shop and
I wanted to monitor some 110 & 220 Volt things. I some times go in the
house to rest and may not go out to the shop again that day. From what I
have read I think it would be quite easy to have one stamp out in the
shop and one in the house that are hooked up by I2C. Now the question
here is what size wire is needed and what length can one use? 1000 feet?
2000 feet?
The reason for the long length is I have another thought in mind for a
later project.
Next what is the least expensive way to monitor 110 or 220 volts and go
direct to a stamp input.
The Idea would be to have a stamp in the house that would have several
LEDs connected to the outputs to tell what is on or is it below
freezing.
If I under stand right the stamp output cannot drive an LED directly?
Yes or No?
can I get by with just the basic stamp chip or am I going to have to
have some support chips?
It is not that I am lazy but winter is almost here in Wisconsin and if I
do not need to get dressed up to go out and check things when it is a 30
below wind chill and a 30 MPH wind with snow 2 foot deep and drifting.
I think it would be a pain for even a healthy person.
Bob nelson
Comments
Radio Shack remote controllers as long as the shop is on the same
Power transformer as the house.
larry
Original Message
From: "robert nelson" <rinelson@c...>
To: <basicstamps@yahoogroups.com>
Sent: October 28, 2002 9:44 AM
Subject: [noparse][[/noparse]basicstamps] power monitor
I am new to the Basic stamp. have some medical problems and take
quite
a few medications every day and tire easily. I have a detached
shop and
I wanted to monitor some 110 & 220 Volt things. I some times go
in the
house to rest and may not go out to the shop again that day. From
what I
have read I think it would be quite easy to have one stamp out in
the
shop and one in the house that are hooked up by I2C. Now the
question
here is what size wire is needed and what length can one use?
1000 feet?
2000 feet?
The reason for the long length is I have another thought in mind
for a
later project.
Next what is the least expensive way to monitor 110 or 220 volts
and go
direct to a stamp input.
The Idea would be to have a stamp in the house that would have
several
LEDs connected to the outputs to tell what is on or is it below
freezing.
If I under stand right the stamp output cannot drive an LED
directly?
Yes or No?
can I get by with just the basic stamp chip or am I going to have
to
have some support chips?
It is not that I am lazy but winter is almost here in Wisconsin
and if I
do not need to get dressed up to go out and check things when it
is a 30
below wind chill and a 30 MPH wind with snow 2 foot deep and
drifting.
I think it would be a pain for even a healthy person.
Bob nelson
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> shop and one in the house that are hooked up by I2C. Now the question
> here is what size wire is needed and what length can one use? 1000 feet?
> 2000 feet?
I can't help you here...
> Next what is the least expensive way to monitor 110 or 220 volts and go
> direct to a stamp input.
Take a look here for some ideas on building a low-cost power monitor:
http://www.edcheung.com/automa/power.htm
There are other places that sell ready-made inductive current coils, I
use a few from Cutler-Hammer around my own house. They'll above an AC
voltage in proportion to the current being drawn. You can measure this
with an ADC (after going through a full-wave bridge) to get an output
that will follow the current use, or through any number of other
methods. There was an article in Nuts N Volts maybe 18 months ago about
a PIC project for a wood shop that used a current sensor to trigger a
dust collector to come on, that might be useful as well.
> If I under stand right the stamp output cannot drive an LED directly?
> Yes or No?
It sure can, with the proper current-limiting resistor.
> can I get by with just the basic stamp chip or am I going to have to
> have some support chips?
Depends on how complex you want to get, if you just want to know simple
temp setpoint and/or if a device is on or off, than "just a stamp" would
probably work.
--
There are only 10 kinds of people in the world.
Those that understand binary. And those that don't.
> The stamp would do what you want but I would look into the x10 or
> Radio Shack remote controllers as long as the shop is on the same
> Power transformer as the house.
>
Good thought, but the OP mentioned a distance of 1000+ feet... This is a
long way for an X-10 signal to travel reliably.
One of the products we sold at my former job worked very well at 9600 baud
sending data to a remote PC and printer.
**********
> I am new to the Basic stamp. have some medical problems and take quite
> a few medications every day and tire easily. I have a detached shop and
> I wanted to monitor some 110 & 220 Volt things. I some times go in the
> house to rest and may not go out to the shop again that day. From what I
> have read I think it would be quite easy to have one stamp out in the
> shop and one in the house that are hooked up by I2C. Now the question
> here is what size wire is needed and what length can one use? 1000 feet?
> 2000 feet?
> The reason for the long length is I have another thought in mind for a
> later project.
> Next what is the least expensive way to monitor 110 or 220 volts and go
> direct to a stamp input.
>
> The Idea would be to have a stamp in the house that would have several
> LEDs connected to the outputs to tell what is on or is it below
> freezing.
> If I under stand right the stamp output cannot drive an LED directly?
> Yes or No?
> can I get by with just the basic stamp chip or am I going to have to
> have some support chips?
>
> It is not that I am lazy but winter is almost here in Wisconsin and if I
> do not need to get dressed up to go out and check things when it is a 30
> below wind chill and a 30 MPH wind with snow 2 foot deep and drifting.
> I think it would be a pain for even a healthy person.