On Sunday 24 May 2020 20:29:28 andy pugh wrote: > On Mon, 25 May 2020 at 00:17, R C <cjv...@gmail.com> wrote: > > I have been following this thread. I wrote some code that runs on > > an RPI that can read a quadrature encoder, I have a few of them, > > with different resolutions. > > Is this something different to the normal LinuxCNC software encoder > that reads GPIO? > Is there some dedicated encoder counter hardware on the Pi?
No. I expect the linuxcnc software would work within its limits. But I am useing a 7i90HD which is programmed to run over SPI, and does it quite well. IOW, I still have a normal network available on mine. The 7i90 has 4 hardware encoders available in the file I have loaded into mine, using 3, one for the spindle and 2 for jog dials on the Sheldon. So I can drive it by hand or as cnc. While here, I'll relay that the buildbots pi4b has not been building well for a day or 4, something about insane headers when I tried it here. 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
