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Another Sound Reactive Target Idea

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rnabholz:
Some of you may have followed my Bell Target Project thread (http://gatewaytoairguns.org/GTA/index.php?topic=466.0)

While I was searching eBay for the bell I used on that project, I came across another device that I thought may have application for this kind of target.

The device is a door/window alarm.  It consists of 2 pieces, the alarm box, about 2" x 1 3/8" and a magnetic bar.  When the alarm is turned on, the alarm remains silent as long as the magnetic bar is kept within about 1/4' of the alarm unit.





They were certainly cheap enough, they were less than $5 for 2 units shipped from Hong Kong! (don't ask me how they make any money!) So I ordered.

Now that they are here, it seems it would be very easy to incorporate them into a sound reactive target.


Using similar construction to my bell target the mechanism would center around a hinge, centered over the target hole on the back side of the target face.  Simply use double sided tape (which conveniently comes with the alarm unit) to attach the alarm unit to the back side of the target face parallel to the edge of the  hinge, and attach the magnet bar to the hinge, again parallel to the edge.



When at rest, the magnet bar will keep the alarm silent, but when the hinge is struck by a well placed shot and the hinge swings up, separating the bar from the alarm the alarm will shriek until gravity returns the bar to the resting position.

The magnetic bar contains no electronics, so it should have no issue with the bouncing around, and the alarm unit with the electronics remains stationary.

The alarm is quite loud, and even a short blast is easily audible.

Of course this is all theory at this point, I will not have a chance to work on it for a few days, but in the mean time, I would love to hear all of your ideas on how to make it better.

Having heard the alarm, I propose that it be known as a "Banshee Target"

Rod

gene_sc:
What an imagination you have..:) That is another great sound reactive target idea. I gotta buy a couple of them also.. Very simple design for sure. I assume the alarm uses battery power. There would have to be a solid barrier in front of alarm itself to keep my flyer's from hitting it..:)

Thanks again for a great idea. Your the man..:) Love the name Banshee Target..:)

Jay:
WOW for "someone with no real skill's" as you said on first post,you sure do have some great idea's!!!This one is excellent just like the last,would you remember the address of the place you got those from? I got to get building some of these.

rnabholz:

--- Quote from: gene_sc on July 19, 2010, 10:02:34 PM ---What an imagination you have..:) That is another great sound reactive target idea. I gotta buy a couple of them also.. Very simple design for sure. I assume the alarm uses battery power. There would have to be a solid barrier in front of alarm itself to keep my flyer's from hitting it..:)

Thanks again for a great idea. Your the man..:) Love the name Banshee Target..:)


--- End quote ---

Thanks Gene.

As I picture it, the alarm is on the backside of the face, safe and sound. I plan on using the big washers like on the bell target to protect the front side.

Yes it does run on batteries, 3 button cells, also included! I don't know how they make money....

Hope to put one together sometime this week. 

Thanks for the interest,

Rod

rnabholz:

--- Quote from: JAY on July 19, 2010, 11:09:48 PM ---WOW for "someone with no real skill's" as you said on first post,you sure do have some great idea's!!!This one is excellent just like the last,would you remember the address of the place you got those from? I got to get building some of these.

--- End quote ---

Thanks Jay,

Here is a link to the product and vendor I used:

http://cgi.ebay.com/Wireless-Door-Entry-Security-Sensor-Alarm-Bell-Chime-/270595796305?cmd=ViewItem&pt=LH_DefaultDomain_0&hash=item3f00c42d51

Rod

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