Hi,

I've never used it with Rivendell, but I have done stuff with serial
port triggers for advertising replacement on a webstream.

You can use the control lines which would normally be used by the modem
to tell the computer its status using the the DCD (Carrier Detect), DSR
(Data Set Ready), CTS (Clear to Send), and RI (Ring Indicate) lines. 
Normally in serial port use they are either +5v or 0v.  What I have is a
little program to monitor the status of each control line, when one of
the status lines goes to +5V it runs one script, when that line goes
back to 0V it runs another script.  The way I have it, each script will
switch the system from sending "live" audio or "pre-recorded audio" down
the internet stream, it works well for online ad replacement.  Normally
you can pull a +5v from the data Set Ready line (pin 4 on the 9 pin
port), you sometimes have to initialize the port to have the computer
set the DSR ready line.  So for example, to trigger the RI line to "on"
you'd just jumper Pin 4 to Pin 9.

The setup I have runs in Windows, however I'm sure this approach could
be used with Rivendell.  It would just be a matter of monitoring those 4
control lines.

Lorne Tyndale





> Hi Everyone,
> 
>  
> 
> Just wondering if anyone could advise as to how to fire the next event in 
> RDAirplay from a remote button via a serial port.
> 
>  
> 
> How do I configure in RDadmin?
> 
>  
> 
> A wiring diagram for the remote start button and serial connection would be 
> most appreciated also.
> 
>  
> 
> Thanks in advance,
> 
> Lee

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