On Friday, February 4, 2022 10:58:00 PM EST Andy Howell wrote: > On 2/4/22 13:06, Chris Albertson wrote: > > On Thu, Feb 3, 2022 at 4:25 PM Andy Howell <a...@gamubaru.com> wrote: > >> Starting from scratch, I would likely stay away from parallel ports. > >> Our current CNC router's controller uses the parallel port, so that > >> is what I have to go with. > > > > Buy an Ethernet Interfaced Mesa board for $89 and it has a DB25 > > connector on the back that works just like a parallel port. > > > > Then you can connect that DB25 to your $10 Chinese breakout board. > > > > Basically, it is an Ethernet to Parallel port bridge, but what you > > end up> > > with for the $89 is two parallel parts that have *much* better > > performance than a real parallel port. > > > > The Mesa card would be a significant performance upgrade while still > > allowing the CNC machine to keep its existing 25-pin parallel cable. > > Also it opens up the option to use any computer, even if it does not > > have a built-in parallel port. A $35 Raspberry Pi could even work > > (but you'd be better off with any of those cheap Intel boards that > > have two Ethernet ports. Or I'm sure you can find an older PC in > > someone's junk pile > Thanks, I will keep that in mind for future projects. Performance is > not really an issue for the CNC routers. 90% is what we cut is 0.062 > or 0.090 aluminum sheet with 1/8" endmills. Can't take very aggressive > cuts with those. I might go for the Rpi for the tiny CNC we want to > retrofit. Not even sure what motors it has. Its been sitting in the > corner under a plastic sheet, waiting for me to find a roundtoit.
Blatantly off topic: They sell those round tuits for about $15 on a good sturdy coffee cup at cafepress. Cheers, Gene Heskett. -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author, 1940) If we desire respect for the law, we must first make the law respectable. - Louis D. Brandeis Genes Web page <http://geneslinuxbox.net:6309/gene> _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
