Gene, Not sure if you would be interested in the approach I'm using, but it may help you or others who are in a similar predicament.
You can use shift registers to add as many additional lines as you want. For example, you can take 3 output lines on your parallel port, and turn them into 8, 16, 24 or more output lines. Shift registers come in two varieties: Serial-In Parallel-Out, which you would use to create more output lines, and Parallel-In Serial-Out which you can use to create more input lines. I wrote a HAL module to implement my setup, which uses 4 pins on the parallel port to create 16 output and 16 input lines. I use these lines for higher-latency signals, since it takes about 1 ms to shift all the bits in and out. There is a good article explaining it here: http://robots.freehostia.com/Software/ShiftRegister/ShiftRegisterBody.html -Kip On Fri, Dec 28, 2012 at 5:15 AM, MC Cason <farmerboy1...@yahoo.com> wrote: > On 12/28/2012 03:10 AM, Steve Blackmore wrote: > > On Fri, 28 Dec 2012 02:34:37 -0500, you wrote: > > > > > >> Mainly the 3 weeks to a month it takes from mainland china for delivery. > >> But since I've decided to sacrifice the one pin I was saving for a home > >> pin, that is the path I'll take. > > That seems a long time? I've had several packages from China most have > > taken 4 or 5 days, none longer than 10 days from Shanghai to my doorstep > > in UK. They are usually in the country within 48 hours, the delays are > > always here! > > > > Steve Blackmore > > -- > > Here in the Southern part of the US, It regularly takes between 10 > days, and 2 weeks for items to arrive from Shenzhen, or Hong Kong, > Longer, from Shanghai, or Guandong. The latest set of boards I had > made, were air flighted out of Hong Kong, on the 19th. According to the > tracking number, they haven't landed yet... > > -- > MC Cason - Assocaite Developer - Eagle3D > Created by: Matthias Weißer > > > > > ------------------------------------------------------------------------------ > Master HTML5, CSS3, ASP.NET, MVC, AJAX, Knockout.js, Web API and > much more. Get web development skills now with LearnDevNow - > 350+ hours of step-by-step video tutorials by Microsoft MVPs and experts. > SALE $99.99 this month only -- learn more at: > http://p.sf.net/sfu/learnmore_122812 > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > ------------------------------------------------------------------------------ Master HTML5, CSS3, ASP.NET, MVC, AJAX, Knockout.js, Web API and much more. Get web development skills now with LearnDevNow - 350+ hours of step-by-step video tutorials by Microsoft MVPs and experts. SALE $99.99 this month only -- learn more at: http://p.sf.net/sfu/learnmore_122812 _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
