[K12OSN] Linux Bell system

[Doug Simpson]

Do you have to manually push the button on your intercom to get the sound 
files to play over the intercom?

If so, there may be an easy way around that. . .

Doug Simpson
Technology Specialist
DeQueen Public Schools
DeQueen, AR 71832
simpsond at leopards.k12.ar.us
Tux for President!

On Thu, 10 Nov 2005, Jim Kronebusch wrote:

> > So you are using cron to schedule bells and delivering the sound 
> > (tones) via your in house intercom system - YES ?  Very smart.   How 
> > did the intercom interface go ?  Any really old systems ?  You can 
> > control alternate schedules and even fire drills and stuff YES ?
> 
> Looks like I was missing one piece.  I now added a daily restart of crond
> after running the script to swap cron jobs.  I also am now adding more stuff
> to play different start of day sounds (such as announcing todays schedule) and
> different end of day sounds (say laughter and jubilation).
> 
> I wired an 1/8th male audio jack to a 3 prong male microphone jack and plugged
> the microphone jack to our receiver for our intercom system.  So now the
> computer is simply another microphone on the system.  Whichever cron schedule
> is set for the day plays the selected audio tone over the intercom system.  I
> can now simply SCP any audio file over to the system and play it on demand as
> well at the command line with "play /path/to/audiofile".  This will be fun.  
> 
> Using the task scheduler from webmin makes a nice gui way to automate the
> scripts ahead of time as well.
> 
> Never thought of using this for fire drills, I don't know what kind of rules
> there are for that but I imagine this would have to be tied into the fire
> sensing system and manual alarm boxes to be of code.
> 
> I hope the scripts and stuff above help.  Let me know if you have any other
> questions.
> 
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