🚀 go-pugleaf

gregg@bss1.umd.edu (Gregg Piermarini) writes:

> 
> 
> A friend here at work wants to know if there is a device which would play a 
> pre-recorded message when a sensor is touched.  This person didn't say if 
> they wanted the message to be digitally recorded and stored in memory or 
> just activate a walkman or something like that.  I figured that the best 
> place to look for something like this is radio shack.  If anybody can point 
> me to a store/catalog or even a circuit schematic/book I would greatly 
> appreciate it.  Please leave a message here or send mail to 
> 	
> 	gregg@bss1.umd.edu
> 
> 
> Thanks a lot
> 
> 
> Gregg
> 
> 
> 

IF you don't mind interfacing to an answering machine, you can get refurb 
recorders very cheap with a warranty and just use a transistor or 
something to pull-down the voltage on switch contacts of the PLAY or OCO 
I mean.. OGM PLAY switch. You can then take the speaker output to a 
larger external speaker for better quality sound.
My GE model has 1 TOUCH PLAY which automatically REWINDS,PLAYS MESSAGE 
AND STOPS. ($40 CDN) All you need is 3 wires to do this.
SIGNAL (to extrnal speaker)
GROUND (common)
PLAY-  (which is probably 0Vdc or contact closure to ground. and can be 
interfaced from your sensor.
For long leads >10ft, add a cap on the recorder switch to suppress noise 
and false switching. Since it is edge triggered, momemtary sensor active 
is all you need.

Tony Stewart/ Unisys Canada  (204)257-9233 All opinions are my own!

dino@inqmind.bison.mb.ca
The Inquiring Mind BBS, Winnipeg, Manitoba  204 488-1607