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Posted by Randy on June 16, 2008, 1:08 pm
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My shop has no windows so on nice days I like to keep the overhead
door open. Well some kid watched me welding for awhile then decided
it was safe - snuck in and stole my laptop computer that was connected
to my CNC mill.
Got him on video, filed a police report.
I need some kind of photocell and beam across the doorway to alert me
if anyone walks in. Can garage door safety beams be used? I have a
couple of friends that can wire up or build me a circuit to make them
work, I just don't know how the work, is there a NO or NC output on
those? I was told you cannot just jumper them out, so I'm thinking
it's more like a signal output rather than a switch closure output.
Thank You,
Randy
Remove 333 from email address to reply.
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Posted by Larry Jaques on June 16, 2008, 1:03 pm
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On Mon, 16 Jun 2008 12:08:42 -0500, with neither quill nor qualm,
>My shop has no windows so on nice days I like to keep the overhead
>door open. Well some kid watched me welding for awhile then decided
>it was safe - snuck in and stole my laptop computer that was connected
>to my CNC mill.
>
>Got him on video, filed a police report.
Excellent!
>I need some kind of photocell and beam across the doorway to alert me
>if anyone walks in. Can garage door safety beams be used? I have a
>couple of friends that can wire up or build me a circuit to make them
>work, I just don't know how the work, is there a NO or NC output on
>those? I was told you cannot just jumper them out, so I'm thinking
>it's more like a signal output rather than a switch closure output.
That could work, but it could be easily sidestepped by lifting your
legs over it.
I have these X-10 systems for my entryway:
http://www.x10.com/security/sc546a_s.html Scroll down to the set,
consisting of the chime, EagleEye IR detector, and RF transmitter.
$45 + s/h. (less on eBay)
And I saw this $20 special in the recent HF ad:
http://www.harborfreight.com/cpi/ctaf/displayitem.taf?Itemnumber=93068
Put 2 strips of tape over the right and left edges of the IR detector
to limit it to a narrower area of detection. It will cover the full
height of the garage door automatically.
--
The only way not to think about money is to have a great deal of it.
-- Edith Wharton
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Posted by Jim Wilkins on June 16, 2008, 7:21 pm
Please log in for more thread options wrote:
> And I saw this $20 special in the recent HF ad:http://www.harborfreight.co=
m/cpi/ctaf/displayitem.taf?Itemnumber=3D93068
>
> Put 2 strips of tape over the right and left edges of the IR detector
> to limit it to a narrower area of detection. It will cover the full
> height of the garage door automatically.
The rounded piece is an infrared motion detector, the larger part its
remote receiver & alarm. If you mount the detector behind the garage
door track it would mask the garage interior and only view the door
opening. They work pretty well, but the chime sound becomes annoying
quickly.
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Posted by _ on June 16, 2008, 1:19 pm
Please log in for more thread options On Mon, 16 Jun 2008 12:08:42 -0500, Randy wrote:
> My shop has no windows so on nice days I like to keep the overhead
> door open. Well some kid watched me welding for awhile then decided
> it was safe - snuck in and stole my laptop computer that was connected
> to my CNC mill.
>
> Got him on video, filed a police report.
>
> I need some kind of photocell and beam across the doorway to alert me
> if anyone walks in. Can garage door safety beams be used? I have a
> couple of friends that can wire up or build me a circuit to make them
> work, I just don't know how the work, is there a NO or NC output on
> those? I was told you cannot just jumper them out, so I'm thinking
> it's more like a signal output rather than a switch closure output.
>
Large dog.
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Posted by Larry Jaques on June 16, 2008, 11:52 pm
Please log in for more thread options On Mon, 16 Jun 2008 11:55:31 -0700, with neither quill nor qualm,
>On Mon, 16 Jun 2008 17:19:00 GMT, _
>
>>On Mon, 16 Jun 2008 12:08:42 -0500, Randy wrote:
>>
>>> My shop has no windows so on nice days I like to keep the overhead
>>> door open. Well some kid watched me welding for awhile then decided
>>> it was safe - snuck in and stole my laptop computer that was connected
>>> to my CNC mill.
>>>
>>> Got him on video, filed a police report.
>>>
>>> I need some kind of photocell and beam across the doorway to alert me
>>> if anyone walks in. Can garage door safety beams be used? I have a
>>> couple of friends that can wire up or build me a circuit to make them
>>> work, I just don't know how the work, is there a NO or NC output on
>>> those? I was told you cannot just jumper them out, so I'm thinking
>>> it's more like a signal output rather than a switch closure output.
>>>
>>
>>Large dog.
>
>which reminds me...Ill be having another group of pups available in
>the next 4 months...seems I didnt catch mommy dog going into heat soon
>enough to put her in the kennel.
Not AGAIN!?! That's irresponsible, mon. 50 demerits.
--
The only way not to think about money is to have a great deal of it.
-- Edith Wharton
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>door open. Well some kid watched me welding for awhile then decided
>it was safe - snuck in and stole my laptop computer that was connected
>to my CNC mill.
>
>Got him on video, filed a police report.