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Security System

K

Kent

Jan 1, 1970
0
I want to set up a small security measure on the side of my house.
Kids have been coming by and trying to get into my garage, and i want
to set up a system that will let me know when someone sets off a
motion sensor. My idea is to rig up a motion sensor off of a
motion-activated light, like most people have outside, and then rig it
to something that will make a noise inside my house, like a doorbell.

My question is, if i were to rig it to a doorbell, how can i set it up
so that when the motion sensor is activated, it does not turn on a
switch, but rather sends a very short, momentary power surge, so that
it can say, ring a 120V buzzer, or ring a 120v doorbell. I would love
to hear if anyone has any ideas.

regards.
 
T

Terry Pinnell

Jan 1, 1970
0
I want to set up a small security measure on the side of my house.
Kids have been coming by and trying to get into my garage, and i want
to set up a system that will let me know when someone sets off a
motion sensor. My idea is to rig up a motion sensor off of a
motion-activated light, like most people have outside, and then rig it
to something that will make a noise inside my house, like a doorbell.

My question is, if i were to rig it to a doorbell, how can i set it up
so that when the motion sensor is activated, it does not turn on a
switch, but rather sends a very short, momentary power surge, so that
it can say, ring a 120V buzzer, or ring a 120v doorbell. I would love
to hear if anyone has any ideas.

Are you starting with a complete proximity light? If so, assuming its
timer can be set (or hacked) so that it lights for only a few seconds,
it sounds like all you need to do is cut the final 120V power wires to
the lamp and add extension wires to your buzzer/bell/whatever.
 
R

Richard Henry

Jan 1, 1970
0
Kent said:
I want to set up a small security measure on the side of my house.
Kids have been coming by and trying to get into my garage, and i want
to set up a system that will let me know when someone sets off a
motion sensor. My idea is to rig up a motion sensor off of a
motion-activated light, like most people have outside, and then rig it
to something that will make a noise inside my house, like a doorbell.

My question is, if i were to rig it to a doorbell, how can i set it up
so that when the motion sensor is activated, it does not turn on a
switch, but rather sends a very short, momentary power surge, so that
it can say, ring a 120V buzzer, or ring a 120v doorbell. I would love
to hear if anyone has any ideas.

You're not going to use to buzz a teenager, are you?
 
K

Kent

Jan 1, 1970
0
Terry Pinnell said:
Are you starting with a complete proximity light?
yes

If so, assuming its
timer can be set (or hacked) so that it lights for only a few seconds,
it sounds like all you need to do is cut the final 120V power wires to
the lamp and add extension wires to your buzzer/bell/whatever.

That's not a bad idea .. but would there be a device i can look for
that acts as a momentary solenoid of sorts, so that when the power is
first turned on it activates a momentary switch for less than one
second, and then doesn't re-activate the switch until the power is off
and then on again?
thanks in advance
-kent
 
T

Terry Pinnell

Jan 1, 1970
0
That's not a bad idea .. but would there be a device i can look for
that acts as a momentary solenoid of sorts, so that when the power is
first turned on it activates a momentary switch for less than one
second, and then doesn't re-activate the switch until the power is off
and then on again?
thanks in advance
-kent

Not sure I follow. It would be better if you described exactly what
you have (e.g 'proximity detector with integral lamp; can be
dismantled...') and what you want to achieve (e.g. 'ring 120 V buzzer
if xyz...'). Describe precisely what must happen in what
circumstances. Show timing where appropriate. Don't try to suggest
*how* it should be achieved.
 
K

Ken Taylor

Jan 1, 1970
0
Richard Henry said:
You're not going to use to buzz a teenager, are you?
Oddly enough, that was what I read into the post too. I hope not, but why
use a 120V 'doorbell'?

If the OP does intend to 'discourage' someone with 120V, think 'murder' then
think again. If not, why use 120V electrics to do this job when there's low
voltage stuff you can play with a lot more safely, and probably cheaply.

Ken
 
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