On Thu, Sep 5, 2013 at 2:55 AM, <[email protected]>wrote:
> > I bought a BBB card for using on my little MF70 CNC. I am looking for a > while on internet but did not found anything about using a BBB with a > cape or connection to emulate the parallel port by BBB GPIO. I have seen > the BeBoPr or K9 Smorgasboard that emulates the parallel port but > there is not an inexpensive solution ? Only some logic level converters? > > Also it will be nice to have a small touch screen to be used with axis , > some advicez . I am thinking as variant to use a android tablet with an > x11 server app > > Paul > All of the signals needed (xstep, xdir etc..) are present on the BBB's GPIO headers at 3.3v level but are very limited to the amount of current they can drive/source. If are familiar with electronics you could get the prototype cape and wire up some I/O line drivers to them and connect right to your stepper drivers and with Charles' MachineKit image be good to go. The BeBoPr just does the same thing but adds the MOSFET's to control a 3D printer's heated bed etc... Also, the abitlity to connect a touch-screen is there as well. I believe the drivers in linux are availble to read the input from it as well. It would be nice though if there was such a Parallel Port Breakout type board pre-made for those that need that option and provided the connectors ready to be wired up.. Bob ------------------------------------------------------------------------------ Learn the latest--Visual Studio 2012, SharePoint 2013, SQL 2012, more! Discover the easy way to master current and previous Microsoft technologies and advance your career. Get an incredible 1,500+ hours of step-by-step tutorial videos with LearnDevNow. Subscribe today and save! http://pubads.g.doubleclick.net/gampad/clk?id=58041391&iu=/4140/ostg.clktrk _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
