On Thu, Nov 12, 2009 at 10:43 PM, Stephen Wille Padnos <spad...@sover.net>wrote:
> Stuart Stevenson wrote: > > >Gentlemen, > > Instead of the parallel port or the NIC should we (someone) consider > the > >video connection as an alternative interface. I would guess not all the > pins > >are used and with some of the new programming tools it may be a viable > >choice. > > > > > Probably not :) > > All of the currently used interfaces use all pins (VGA, DVI, HDMI). > There are also very specific timing limitations and data formats. > There's always a vertical blanking time (per frame) and horizontal > blanking time (per line). > > DVI and HDMI have an extra data channel, which is used for audio with HDMI. > > None of the video interfaces have a fast return data channel. They all > have DDC or the equivalent, but it's relatively slow. > > Overall, you'd be better off just getting a Mesa card :) > > I'm interested in adopting the USB interface for servo/stepper motor control. It's cheap and widely available, although it has quiet significant latency issue. I'm working on resolving issues around USB interface. Here's a video for a SCARA robot controlled by EMC2 and a USB control board: http://www.youtube.com/watch?v=JF6dYXo2CeE Yishin Li ------------------------------------------------------------------------------ Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
