Hi Ray, I mentor Team 3201, Ross Rambotics, in Ross Ohio. -Kip
On Mon, Jan 28, 2013 at 3:12 PM, Ray Mitchell <jrmitche...@gmail.com> wrote: > Hi Kip > What team are you working with? > > I am working with 1138, Eagle Engineering, in West Hills CA > > Ray M. > > --J. Ray Mitchell Jr. > jrmitche...@gmail.com > (818)324-7573 > > > A foolish faith in authority is the worst enemy of truth. > - Einstein > > > > > On Sun, Jan 27, 2013 at 3:14 PM, Kip <k...@shafferhouse.org> wrote: > > > Greetings all! My shift registers seem to be working well as a cheap > > and easy port expander! Apologies for how long it took me to write it > > up, but we are currently in the middle of the FIRST Robotics Challenge > > build season, so I'm spending almost every evening mentoring high school > > students. > > > > I've attached a schematic of the circuit used. Notice it creates 16 > > output and 16 input lines using only 3 output and 1 input pin on the > > parallel port. > > > > I also attached the .comp file to drive it. It count base-thread ticks > > for timing. I have it configured to update every 1 ms with my system, > > but this is configurable. While 1 ms is too slow for micro-stepping, it > > is plenty fast enough to detect the pulses from my cooling fan > > tachometers, turning pumps on and off, reading control panel buttons, > > and blinking status LEDs. > > > > The complete write-up can be found here: > > > > http://www.shafferhouse.org/linuxcnc/LinuxCNCShiftRegisters.pdf > > > > It goes into a lot of detail that is probably too basic for most of the > > readers of this list, but please let me know if there are things you > > would like me to add. > > > > Enjoy! > > -Kip > > > > On Thu, 2013-01-03 at 07:18 +0200, Marius Liebenberg wrote: > > > That sounds impressive. I am looking forward to seeing it. > > > > > > On 2013/01/02 10:03 PM, Kip Shaffer wrote: > > > > Absolutely! I just finished wiring up the real (non-prototype) > > interface > > > > card yesterday. As soon as I make sure everything is working, I'll > > post > > > > the wiring diagram and the HAL module. It appears that even the > > > > high-latency (1ms) shift register lines are fast enough to directly > > read > > > > the tachometer signal from my cooling fans (120 Hz)! > > > > > > > > > > > > > > > > > > > > On Wed, Jan 2, 2013 at 2:11 PM, Marius Liebenberg < > > mar...@mastercut.co.za>wrote: > > > > > > > >> Kip, > > > >> Would you be willing to share your module. I am in need of a similar > > > >> solution. > > > >> Marius > > > >> > > > >> On 2012/12/28 02:54 PM, Kip Shaffer wrote: > > > >>> 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 > > > >>>> > > > >> -- > > > >> Regards / Groete > > > >> > > > >> Marius D. Liebenberg > > > >> MasterCut cc > > > >> Cel: +27 82 698 3251 > > > >> Tel: +27 12 743 6064 > > > >> Fax: +27 86 551 8029 > > > >> Skype: marius_d.liebenberg > > > >> Skype Me^(TM)! <skype:marius_d.liebenberg?call> > > > >> Get Skype <http://www.skype.com/go/download> and call me for free. > > > >> > > > >> > > > >> > > > >> > > > >> --- > > > >> avast! Antivirus: Outbound message clean. > > > >> Virus Database (VPS): 130102-0, 2013/01/02 > > > >> Tested on: 2013/01/02 09:11:40 PM > > > >> avast! - copyright (c) 1988-2013 AVAST Software. > > > >> http://www.avast.com > > > >> > > > >> > > > >> > > > >> > > > ------------------------------------------------------------------------------ > > > >> Master Java SE, Java EE, Eclipse, Spring, Hibernate, JavaScript, > > jQuery > > > >> and much more. Keep your Java skills current with LearnJavaNow - > > > >> 200+ hours of step-by-step video tutorials by Java experts. > > > >> SALE $49.99 this month only -- learn more at: > > > >> http://p.sf.net/sfu/learnmore_122612 > > > >> _______________________________________________ > > > >> Emc-users mailing list > > > >> Emc-users@lists.sourceforge.net > > > >> https://lists.sourceforge.net/lists/listinfo/emc-users > > > >> > > > > > > > > > > > > ------------------------------------------------------------------------------ > > 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/learnnow-d2d > > _______________________________________________ > > Emc-users mailing list > > Emc-users@lists.sourceforge.net > > https://lists.sourceforge.net/lists/listinfo/emc-users > > > > > > ------------------------------------------------------------------------------ > 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/learnnow-d2d > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > ------------------------------------------------------------------------------ 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/learnnow-d2d _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
