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#1565564 - 01/03/09 09:27 PM

Question about piezos & glass break sensors...

A/V
Cool Guy
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Registered: 05/03/02
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Loc: McKinney Texas

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Hey guys. I have a DEI Python 990 I'm planning on installing in the near future. The vehicle is a 2003 Toyota 4Runner Limited, 4x4, V8. Along with the 990, I have and will also be installing a 530T window module, 529T window module (sunroof/back window), 520T backup battery, 515R backup battery siren, and 506T glass break sensor.

My question is about using the glass break sensor with piezos. I have always been a big fan of adding piezos in my past vehicles, but never had a glass break sensor wired in due to conflicts between the two components. Now, I am wondering if I wire the piezos on a delay (say 5-10 seconds), will I still have the conflict? From what I understand, the conflict comes from when the warn-away sounds, the piezos cause the GBS to sense a problem and sounds a full alarm. But with the piezos wired on a delay, they won't sound unless the alarm has been fully triggered, so they won't cause falsies. Has anyone tried this? Am I wrong in my thinking?

Feel free to comment...

Edited by A/V (01/03/09 09:29 PM)
Edit Reason: oops

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Brad Marks
2003 Toyota 4Runner Limited V8 4WD
Kenwood DDX-8019/KNA-G510
DEI Python 990 & extras

a/v1 - Termpro
av1 - Caraudioforum
a/v1 - toyota-4runner.org
Bensdad1969 - Ebay

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#1565585 - 01/03/09 10:12 PM

Re: Question about piezos & glass break sensors... [Re: A/V]

IamMurph
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Use the horn output to delay the piezo until full trigger and the problem is solved.

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#1568012 - 01/08/09 01:24 AM

Re: Question about piezos & glass break sensors... [Re: IamMurph]

A/V
Cool Guy
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Registered: 05/03/02
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Thanks for the reply Murph, but if I use the horn trigger to delay the piezos, will it not then make the piezos cycle on & off with the horn output as well at full alarm?

The delay I was thinking about using would just be a simple circuit with a 555 timer chip. By adjusting the resistor values, I can adjust the delay time. I was planning on controlling a relay with it that the power to the piezos would be wired through.

Again, feel free to let me know if I'm over-thinking this one. If there's an easier way to accomplish the same result, I'm all for it.

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#1568434 - 01/08/09 05:09 PM

Re: Question about piezos & glass break sensors... [Re: A/V]

IamMurph
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The horn output is only used with full alarm and you can program it to a constant signal instead of a pulsed output. Now you can't do horn and piezo at the same time.

The 528T can be used to delay the signal but it's extra work.

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#1568645 - 01/09/09 01:56 AM

Re: Question about piezos & glass break sensors... [Re: IamMurph]

A/V
Cool Guy
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Excellent - Thanks! That's what I think I'll do then with the 990's horn output. I had originally planned to use it for the horn, however, the OEM anti-theft is still 100% operational (arms & disarms with the 990), which I forgot pulses the horn, so I can use the 990's horn output for the delay. Sweet! Thanks again!

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#1576132 - 01/21/09 12:54 AM

Re: Question about piezos & glass break sensors... [Re: A/V]

19Blazer96
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Registered: 10/17/08
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Would this also work on a Viper 5900 alarm? piezos to horn output?

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#1576682 - 01/21/09 04:50 PM

Re: Question about piezos & glass break sensors... [Re: 19Blazer96]

IamMurph
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Yes

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#1576773 - 01/21/09 06:52 PM

Re: Question about piezos & glass break sensors... [Re: IamMurph]

19Blazer96
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Originally Posted By: Hoff the PoolGuy

Yes

So then I would just program it for a constant signal then?

I started installing my 5900 back in the fall but it got to cold outside to finish since I dont have a garage. I had the piezos wired up already but I think I'll change them so I can still add my glass sensor.

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