> > I helped a guy set up a 7i95 with encoders. Not hard, but not super simple > because pncconf doesn't support that board native and the 7i95 configurator > didn't work. I used the ini name setting in pncconf, made a config for a > 7i96 and had to change the name of the board in the ini file and rename the > io pins. > > I have a two switch home setup on my Emco using a prox switch as an index > pulse after hitting a mechanical switch, using home_use_index and I'm using > home_index_no_encoder_reset in master to home my x and z without having > full encoder feedback. I made some videos on my YouTube channel about it. > > I'm not shying you away from the 7i95, i think it's a great board, but be > ready for a little hair pulling unless you're pretty comfortable with the > mesa ecosystem. >
Well, I'm not new to mesa boards but I'm always using a whole different approach on each machine. The first I installed was the 5i25 with a breakout board my brother already designed for another project. Then I started with the PCIe ones, and now I'm finally going for the ethernet ones because saves me a lot of hassle mounting the PC on the cabinet. On the top of that, I'm retrofitting a machine every 2 years so every time is like I'm re learning all of it again. One thing I must say, I've never used PNCCONF or STEPCONF. What I always loved about LCNC is the way I can model a system with HAL using plain text. I'm far away from being a programmer but the way HAL works for me is just pure genius. I don't even use the Classicladder feature. For me HAL has it all right there, and It never ceases to amaze me. El sáb, 26 jun 2021 a las 10:17, Feral Engineer (<[email protected]>) escribió: > I helped a guy set up a 7i95 with encoders. Not hard, but not super simple > because pncconf doesn't support that board native and the 7i95 configurator > didn't work. I used the ini name setting in pncconf, made a config for a > 7i96 and had to change the name of the board in the ini file and rename the > io pins. > > I have a two switch home setup on my Emco using a prox switch as an index > pulse after hitting a mechanical switch, using home_use_index and I'm using > home_index_no_encoder_reset in master to home my x and z without having > full encoder feedback. I made some videos on my YouTube channel about it. > > I'm not shying you away from the 7i95, i think it's a great board, but be > ready for a little hair pulling unless you're pretty comfortable with the > mesa ecosystem. > > That being said, anyone ever use a 7i95 for full closed loop to LinuxCNC > using step dir and encoders? I know a lot of guys are using the 7i77 that > way with analog and there's the 7i97 that would be fun to check out as well > for analog setups. Curious if there's any kind of weirdness that happens > using step pulse with encoder vs just using analog signal. > > > Phil T. > The Feral Engineer > > Check out my LinuxCNC tutorials, machine builds and other antics at > www.youtube.com/c/theferalengineer > > Help support my channel efforts and coffee addiction: > www.patreon.com/theferalengineer > > On Sat, Jun 26, 2021, 8:47 AM Leonardo Marsaglia <[email protected]> > wrote: > > > Hello Andrew and Gene and sorry for the late reply. I hope you're doing > > great! > > > > I believe I'll use the 7i84 as Peter suggested to expand the I/Os. But > > instead of the 7i76E I'll go with the 7i95 which can read encoders too. > > With this I can replicate what I did on the mazak which is to fool the > > homing sequence to use the index pulse of the motors on the final stage. > > > > El mar, 22 jun 2021 a las 2:23, Gene Heskett (<[email protected]>) > > escribió: > > > > > On Monday 21 June 2021 22:01:25 Leonardo Marsaglia wrote: > > > > > > > Thanks a lot Peter and Andy, > > > > > > > > I re read through the manual and found the SSERIAL port connection > and > > > > the recommendation of using a CAT5 cable cut in half. I missed that > > > > part so I was a little confused about how to expand the I/Os. So, > I'll > > > > be more than ok with this board :) > > > > > > > Another possibility if you need lots of i/o, is the 7i90HD, which has a > > > total of 72 lines. Firmware options for uo to 8 axises of steppers and > > > encoders. Or I believe pwm-gens and encoders. The disadvantages are its > > > 3, 50 pin i/o's that are all tied to the fpga, and easily damaged by > > > noise. The fix for that is a trio of 7i42TA's which are effectly used > as > > > breakout boards, tradeing some bandwidth for the usual surge protection > > > and giving you nice screw terminals to wire it up with. It can be > driven > > > from an epp parport, or from an spi port from a pi. With all the > > > gingerbread I've put on the sheldon, I probably have 35 i/o lines > unused > > > yet. And I can fire up firefox and browse the net at the same time its > > > running the sheldon. I felt keeping the ethernet port out of the lcnc > > > arena, so the net port was available for updating and such was more > > > important, and still do. 2 of my 4 machines are building and installig > > > their own versions of linuxcnc from github master-gtk3 as I type this, > > > including that rpi4. > > > > > > > El lun, 21 jun 2021 a las 4:45, andy pugh (<[email protected]>) > > > escribió: > > > > > On Mon, 21 Jun 2021 at 03:27, Leonardo Marsaglia > > > > > <[email protected]> > > > > > > > > > > wrote: > > > > > > Is the 7i75 > > > > > > breakout board the way to add more I/Os to the 7i76E? And in that > > > > > > case I suppose the direction of the I/O pins in determined in HAL > > > > > > at the startup right? > > > > > > > > > > That depends on what you want. If it is just GPIO then look at > > > > > smart-serial boards on the built-in port. > > > > > If that still isn't enough, you could add one or two 7i74 boards to > > > > > the 7i76E for a theoretical extra 3584 extra IO lines.... > > > > > > > > > > (smart serial has been recently expanded from 96 to 224 bits, but I > > > > > am not sure if any available boards actually add more than 48 io > > > > > pins each) > > > > > > > > > > -- > > > > > atp > > > > > "A motorcycle is a bicycle with a pandemonium attachment and is > > > > > designed for the especial use of mechanical geniuses, daredevils > and > > > > > lunatics." > > > > > — George Fitch, Atlanta Constitution Newspaper, 1912 > > > > > > > > > > > > > > > _______________________________________________ > > > > > Emc-users mailing list > > > > > [email protected] > > > > > https://lists.sourceforge.net/lists/listinfo/emc-users > > > > > > > > _______________________________________________ > > > > Emc-users mailing list > > > > [email protected] > > > > 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 > > > [email protected] > > > https://lists.sourceforge.net/lists/listinfo/emc-users > > > > > > > _______________________________________________ > > Emc-users mailing list > > [email protected] > > https://lists.sourceforge.net/lists/listinfo/emc-users > > > > _______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users > _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
