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Need to trigger sound playback device

I am building a Halloween prop and I'd like to add sound to it.

I was looking at this cheap solution:

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It's a simple playback device. It has an input for a switch. I want to tie that input to a relay so when the motion detector is tripped it triggers the sound.

When the detector trips, it will supply AC to a power strip. One of the things plugged into the power strip will be an 8VDC supply to drive a DC motor. An incandescent light will also come on.

In other words, when the detector trips, I will have 120 VAC and 8VDC available to me.

Should I go with a AC or DC relay? Any specific info as to which one? I'm going to be ordering some stuff at allelectronics.com.

Thanks!

Reply to
Mitch
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Aha! As Maxwell Smart would say, the old MS-13A Motion Detector / TM-751 X-10 Mini-Transceiver Module / PW-101 Outlet Strip trick. Well, in order to complete the Halloween scene, and have Agent 99 swooning in your arms (;-), you might want to use the RLY-2120 120VAC 10A relay ($2.75 ea.) with an 18-2 line cord and some 0.187" quick connects (you'll have to go to the hardware store for them -- they're not in the All Electronics catalog). Plug the zip cord into the outlet, and quick connect the other end to the relay coil, and you're good to go. Be sure to secure the relay -- hot melt glue isn't good enough. Also, make sure all your electrics and electronics are in a non-conductive enclosue safe from rain, and don't keep it outside with condensing humidity.

Good luck with Agent 99 Chris

Reply to
CFoley1064

Thanks...sounds great.

Reply to
Mitch

By the way, what's the best way to secure the relay?

The project enclosure I bought is too small, so I have to get a different one anyway. Might as well get one big enough to house the circuit, battery, mic/speaker and realy.

Reply to
Mitch

Since this is a Halloween project, I'd recommend the time-honored cigar box. I'd also look at plastic craft boxes and such -- you probably threw out several acceptable boxes this month. The important criteria are sturdiness and non-conductivity.

Also, in the time honored Halloween scare 'em project tradition, I'd use Ty-Raps to wedge the relay in a corner of the box and reinforce with hot-melt glue.

If you want ideas for Halloween stuff, go to the library or video store and rent Tim Burton's "The Nightmare Before Christmas".

By the way, be sure your stuff is fused. Don't depend on the circuit breaker in case something goes wrong. And if you don't know what you're doing with line voltage, ask or let someone who does help you.

Good luck, and play safe Chris

Reply to
CFoley1064

On Monday 04 October 2004 07:49 pm, CFoley1064 did deign to grace us with the following:

Don't slight "Beetlejuice." ;-)

Cheers! Rich

Reply to
Rich Grise

All is working well.

There's one catch: The minimum time on my motion detector is 20 seconds. My audio playback device can only hold 10 seconds of audio.

Right now, the motion detector powers the power strip, which turns on the zombie, the PC speaker, the strobe light, and energizes the relay to trip the playback device.

Is there some way I can get the playback device to play TWICE for each cycle of the motion detector?

Reply to
Mitch

All is working well.

There's one catch: The minimum time on my motion detector is 20 seconds. My audio playback device can only hold 10 seconds of audio.

Right now, the motion detector powers the power strip, which turns on the zombie, the PC speaker, the strobe light, and energizes the relay to trip the playback device.

Is there some way I can get the playback device to play TWICE for each cycle of the motion detector?

Reply to
Anonymous

Yes. Post your circuit.

Ed

Reply to
ehsjr

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