diff --git a/tools/serial-log.pl b/tools/serial-log.pl
new file mode 100644
index 000000000..81b49a515
--- /dev/null
+++ b/tools/serial-log.pl
@@ -0,0 +1,124 @@
+#!/usr/bin/perl -w
+#Log serial port to terminal and file with timestamps
+#D.Kopf 8/28/2001
+#
+
+use Device::SerialPort;
+use Term::ReadKey;
+use Getopt::Long;
+use Time::HiRes qw(usleep);
+
+use strict;
+
+my $term = '/dev/com1';
+my $baud = '57600';
+my $rts = 'none';
+my $logfile = 'none';
+my $ssss = '';
+
+GetOptions ('terminal=s' => \$term, 
+	'baud=s' => \$baud,
+	'rts=s' => \$rts,
+	'seconds!' => \$ssss,
+	'logfile:s' =>\$logfile
+) or goto printhelp;
+goto bypass;
+printhelp:
+	print "Example serial-log.pl -t /dev/ttyS0 -b 57600 -r none -l logfile\n";
+	print "       -t, --terminal\n";
+	print "       -b, --baud\n";
+	print "       -r,--rts [none|rts] flow control\n";
+	print "       -s,--seconds Display ssss instead of hh:mm:ss\n";	
+	print "       -l,--logfile outputfile (.log will be added, -l defaults to serial.log)\n";
+	print "\n";
+	print  "The default is equivalent to serial-log.pl -t /dev/com1 -b 57600 -r none\n";
+	exit;
+bypass:
+
+my $ob = Device::SerialPort->new ($term) or die "Can't start $term\n";
+    # next test will die at runtime unless $ob
+
+$ob->baudrate($baud);
+$ob->parity('none');
+$ob->databits(8);
+$ob->stopbits(1);
+if($rts eq 'rts') {
+	$ob->handshake('rts');
+} else {
+	$ob->handshake('none');
+}
+$ob->read_const_time(1000); # 1 second per unfulfilled "read" call
+$ob->rts_active(1);
+
+my $c; my $count;
+my ($hh,$mm,$ss,$mday,$mon,$year,$wday,$yday,$isdst,$theTime,$seconds,$startseconds);
+#use POSIX qw(strftime);
+
+($ss,$mm,$hh,$mday,$mon,$year,$wday,$yday,$isdst) = localtime;
+$theTime = sprintf "on %02d/%02d/%04d at %02d:%02d:%02d\n", $mon+1, $mday, $year+1900, $hh, $mm, $ss;
+if($logfile ne 'none') {
+	if($logfile eq '') {$logfile = 'serial';}
+	$logfile ="${logfile}.log";
+	$c=1;
+	open LOGFILE, "$logfile" or do {$c=0;};
+	if ($c) {
+		print "File $logfile exists. Restart, append, or quit (r,a,q) (q) ? ";
+		#$| = 1;               # force a flush after print
+		$_ = <STDIN>;chomp;
+		if ($_ eq 'r') {
+			open LOGFILE, ">$logfile" or die $!;
+			print "Restarting $logfile $theTime\n";
+			print LOGFILE "serial-log.pl logging to $logfile started $theTime\n";
+		} else {
+			if ($_ eq 'a') {
+				open LOGFILE, ">>$logfile" or die $!;
+				print "Appending to $logfile $theTime\n";
+				print LOGFILE "serial-log.pl appending to $logfile $theTime\n";
+			} else {
+				print "Quitting, file unchanged.\n";
+				exit;
+			}
+		}
+	} else {
+		open LOGFILE, ">$logfile" or die $!;
+		print LOGFILE "serial-log.pl logging to $logfile started $theTime\n";
+		print "Starting $logfile $theTime\n";
+
+	}
+	LOGFILE->autoflush(1);
+} else {
+	$logfile='';
+	print  "Serial logging of $term started $theTime\n";
+}
+if($ssss ne '') {
+	$startseconds=$hh*3600+$mm*60+$ss;
+}
+
+$theTime='';
+
+while(1) {
+	($count, $c) = $ob->read(1);
+	if (defined($count) && ($count != 0)) {
+		if ($theTime eq '') {
+			($ss,$mm,$hh) = localtime(time);
+			if ($ssss ne '') {
+				$seconds = $hh*3600+$mm*60+$ss-$startseconds;
+				if ($seconds < 0) {$seconds+=24*60*60;}
+				$theTime = sprintf("%04d ",$seconds);
+			} else {
+				$theTime = sprintf("%02d:%02s:%02d ", $hh,$mm,$ss);
+				#$theTime = strftime "%H:%M:%S ", localtime;
+			}
+			print $theTime ;
+			if ($logfile)  {LOGFILE->autoflush(1);print LOGFILE $theTime;}
+		}
+		print $c ;
+		if ($logfile) { print LOGFILE $c;}
+		if ($c eq "\n") {$theTime=''};
+	}
+}
+if ($logfile) {close LOGFILE or die $!}
+$ob -> close or die "Serial port close failed: $!\n";
+ReadMode 0;
+undef $ob;  # closes port AND frees memory in perl
+exit;