PMDX Forum

General Category => Parallel Port breakout boards, motherboards, and dedicated accessories => Topic started by: wbirnie13@gmail.com on January 17, 2019, 01:09:00 PM

Title: External LED on an input
Post by: wbirnie13@gmail.com on January 17, 2019, 01:09:00 PM

I am using port 2 input 11 on my PMDX-126 for my auto zeroing and edge finding probe.
Is there a simple way to add a LED at the probe so I don't have to go into the diagnostics
screen mach3 and check the input for continuity before running the script.

Title: Re: External LED on an input
Post by: Steve Stallings on January 17, 2019, 01:27:40 PM

Adding an LED at the probe could be made to work if you put the probe
on the input for pin 15 and set the jumper at JP5 to the on position.
This will provide a stronger pull-up resistor so that you can connect
a series connected LED and current limiting resistor across the probe
input and still have the input work. This arrangement is used in the
"WildHorse" probe and the input will work with it.

http://www.wildhorse-innovations.com/support/EPHookup-Alignment-new-v1.pdf

If this is not practical for you, you could modify your Mach3 screen set to
put and indicator on the main screen.