audio triggering question - diyAudio
Go Back   Home > Forums > Design & Build > Parts

Parts Where to get, and how to make the best bits. PCB's, caps, transformers, etc.

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 2nd December 2004, 06:08 AM   #1
diyAudio Member
 
Join Date: Dec 2004
Location: sf,ca
Default audio triggering question

Hi All,

I'm not sure this is the right place, but some of you might have an idea. I need to trigger the audio of a art exhibit when people either cross an electric eye or stand on a matt. The exhibit will be shown for a month, and the sound will drive the people working nearby nuts if it is left on the intire time. Any suggestions. We have a small budget, so ideas over 150$ are out of the question. Any ideas, suggestions, or links?
  Reply With Quote
Old 2nd December 2004, 09:11 AM   #2
Did it Himself
diyAudio Member
 
richie00boy's Avatar
 
Join Date: Nov 2003
Location: Gloucestershire, England, UK
Use the eye/mat to trigger a 555 timer in monostable mode to generate a pulse of say 10 secs duration. Use this pulse to switch a relay in your speaker line. The amp and source will be permenantly on.

I'm assuming you don't need to do anything fancy like start a new sound sample with each triggering as that will take a fair amount more complexity.
  Reply With Quote
Old 6th December 2004, 09:18 AM   #3
diyAudio Member
 
Join Date: Jul 2003
Location: Dona paula, Goa
Olden time tape recorders had a mini EP socket next to the mike input designated as REMOTE. This was a switch in series of the motor. This can be used but I do not know how u will rewind the tape to restart.

Gajanan Phadte
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
PS Audio Question (pre-amp) heiman Solid State 8 27th July 2013 03:30 PM
555 Timer Triggering Problem silentblackhat Digital Line Level 1 11th February 2009 06:32 AM
Calculation of frequency-triggering alexpea22 Equipment & Tools 1 27th November 2008 06:56 PM
Car Audio Crosovers question, extremy Car Audio 5 6th April 2004 01:06 PM


New To Site? Need Help?

All times are GMT. The time now is 03:47 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2