On 4/10/2012 5:52 PM, Kent A. Reed wrote: > Kirk Wallace<kwallace@...> writes: > > >> On Tue, 2012-04-10 at 11:25 -0400, Dave wrote: >> >>> On 4/10/2012 11:11 AM, gene heskett wrote: >>> >>>> there is no source >>>> >>>>> > of power on that side of the interface in the G540 >>>>> >>> <...> >>> practical with the existing design. I was thinking that some simple >>> pull up resistors on the G540 side would do the trick, and that >>> Geckodrive might have missed that, but with no pull up power source.. >>> that isn't practical. >>> >>> If the LPT port can be put into EPP mode, there seems to be no issue. >>> >>> Dave >>> >> Dan from the DIY-CNC list has loaned a G540 to me (it might be here >> Wed.). I plan to investigate this pull-up issue and document it, maybe >> on the wiki. One of my hopes is to come up with a "just works" type of >> solution. Many of us on this list understand electronics and software >> enough to not think twice about adding a resistor here, or a bit check >> there, but in the real world of CNC, many people don't want to or can't >> get that deeply into the machine's workings. They just want something >> they can buy and it just works. LinuxCNC might become more popular if it >> had more "just works". >> <...> >> >> > > [Sorry if this message gets duplicated. I'm still having trouble straightening > out my SourceForge connection.] > > Just for grins, has anyone thought to ask Mariss, for example via the > GeckoDrive > Yahoo Group? It's been some years, but the last time I asked him a question > about some formulas that appear in documentation on the GeckoDrive website, he > replied promptly. > > Regards, > Kent > > > > We could, but I think we have it narrowed down to the LPT port not going into EPP mode properly on certain hardware. Jon thinks this is the old Bios issue and I suspect that he is correct.
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