On Wednesday 26 December 2012 23:50:52 andy pugh did opine: > On 26 December 2012 22:45, Gene Heskett <ghesk...@wdtv.com> wrote: > > I am out of input pins on the cnc4pc C1G. > > How about using the serial port status pins? > http://www.linuxcnc.org/docs/html/man/man9/serport.9.html
Hadn't even crossed my mind Andy, thanks. From the manpage, looks like that could give me 3 more .in pins. Next of course, that would bypass the opto isolation. I wonder if the sparkfun thing could be like an old serial mouse, which was powered by the logic levels of the port? Its marked for ground & 5 volt supplies, but it came with zero docs, as in nada, zip, none. Time to do some research on the chip makers site I guess. The sparkfun site itself is no help. Cheers, Gene -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) My web page: <http://coyoteden.dyndns-free.com:85/gene> is up! No house is childproofed unless the little darlings are in straitjackets. I was taught to respect my elders, but its getting harder and harder to find any... ------------------------------------------------------------------------------ Master Visual Studio, SharePoint, SQL, ASP.NET, C# 2012, HTML5, CSS, MVC, Windows 8 Apps, JavaScript and much more. Keep your skills current with LearnDevNow - 3,200 step-by-step video tutorials by Microsoft MVPs and experts. ON SALE this month only -- learn more at: http://p.sf.net/sfu/learnmore_122712 _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
