On Thursday 23 July 2020 12:21:15 John Dammeyer wrote: > This might have been mentioned on the MACH CNC group but the reality > is that if you want LinuxCNC and two parallel ports the MESA 7i92 is > less expensive and not tied to potential speed issues via USB. For > example WIN-10 won't run the USB based Smooth Stepper but will run > the Ethernet Smooth Stepper with MACH4. > > So for LinuxCNC at $89 the 7i92H is just overall a better deal. Or > any of the MESA or PICO based products. For all the costs involved in > CNC the truth is during the learning curve part the broken tool bits > and trashed work is far more expensive but considered part of the > costs. Ethernet is faster and less likely to have timing issues. > > My 2 cents. > > John
And the SPI interface is even faster for the 7i90, I am writing to it at 39something megabits, in 32 bit chunks and reading its responses at 25 megabits in 32 bit chunks. And the SPI doesn't go thru any of the speed killing usb stuff on the pi's, its directly on the arms gpio, so the pi3 can also do it pretty well too. The 7i90 is cheaper too, until you add the 7i42TA's to convert its 50 pin scsi connectors into terminal strips, But when you have done that, you have 72 gpio pins, and with that you can wire up the world. I still have around 30 unused i/o pins after hooking up the fault circuit from my new 3 phase Z driver. > > -----Original Message----- > > From: Dave Matthews [mailto:n36...@gmail.com] > > Sent: July-23-20 8:42 AM > > To: Enhanced Machine Controller (EMC) > > Subject: [Emc-users] Machmaker USB -> Parallel > > > > A link to a video for this thing showed up in my facecrap feed. It > > looks like a UC-100 only for LinuxCNC 2.9. They are demoing on a Pi > > 4. Has anyone got any experience with the Linumeric-LPT v1? Price > > and ordering are not shown on the site, you are directed to email > > them. > > > > Product Link - http://machmaker.pl/index.php?p=1_13 > > > > VIdeo - > > https://www.youtube.com/watch?v=txivr8j86t8&feature=youtu.be&fbclid= > >IwAR04UYfSGbRucny1aek0HVgJGrBkG0FiaxosNx_DQ iKoZXNBPOXl1Raue3A > > > > Dave > > > > > > _______________________________________________ > > Emc-users mailing list > > Emc-users@lists.sourceforge.net > > https://lists.sourceforge.net/lists/listinfo/emc-users > > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users 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) 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
