pathpilot pulse output?

I don't think that anyone will be able to help much until you find out more about your machine.
Specifically whether you have any existing hardware output pins to use.

Can you open a terminal in a PathPilot controller? Does "halcmd show pin" do anything?

I will go try at the machine now. I know I can get into terminal.

I can hit ctrl alt x and terminal opens but I dont know what to put in.  like ADMIN or CMD or what to get information to work in the terminal 
terminal says "operator@tormachpcnc:~$ " but if I type HALCMD it just says "command not found"  I am using PP 2.8.3   I tried " ADMIN HALCMD" same response.  I tried "SUDO HALCMD".  I am not sure what you can do in the path pilot terminal or what I need to type first to accept my commands.

Did Peter give you the M208 macro as well? From shuffling files around various computers I lost it a while ago. Amusingly, no one has ever emailed me about LinuxCNC/AccuBlasts from that document. Going through a USB I/O board won't work, mechanical relays would be much too slow to be practical.

Even using the 7i76e's output was iffy, Peter had to make some changes to the firmware to help it recognize the pulses more accurately. I think I was on 1.10, maybe it's better now, but I haven't played with the unit basically since writing that document.

So your Norman! wow how cool. I would love to get this to work good without too much fuss. I started recording video of my installation on my Tormach to help Pete out, and show how cool it is.  I would like to get the tool offset part to work though. Seemed like it would be easy but alas I am not a coder or a linux guy.  Well if you have any advice I am sure open to any ideas.  Thanks

With the Series 3 running off of a parallel port, really the only way you'd be able to do it is to use the P2 port of the Mesa card, every other signal from P1 is being used by Tormach already.