Thanks RichardK,

I did tried adding this code 

$sig4->repeat(100,\&handler);

sub handler {
my $data = $port->lookfor;
return unless $data;
print STDOUT "$Message Received: (" . $data . ")\n";
exit; # THIS WAS ADDED TO MAKE SURE THE CODE DOES WORK...IT DID WORK A
+ND THE PROGRAM EXITED
}

[download]
and some how when each button is pushed for $sig1, $sig2 etc...the handler sub is invoked and thats strange because only $sig4 is assigned to the handler....and the second issue is that the code is still not polling the Arduino looking for "OF"...the button has to be pressed again....The Arduino is sending data after the 8 seconds as the TX light flashes...the perl code needs to continue in a loop some how to keep looking for the "OF" trigger.
UPDATE: And to clear the buffer as the perl code is reading what the Arduino last sent

In reply to Re^2: Serial Port by PilotinControl
in thread Serial Port by PilotinControl

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