On Sunday 19 November 2017 10:31:17 suavesteve wrote: > Hi All, > > A question about mixing Servo and steppers. I'm currently running > three axis with servos, and have been thinking about adding a 4th. > Mentioning this to a local freelance engineer who has taken some > interest in my LinuxCNC retrofit, he suggested he had some steppers > and drivers he'll be willing to give me. They were bought for a > prototype paint line in a local manafacturing plant and have had only > had around 15 hours of work. They were an EBay buy, Nema 34 12Nm > (https://www.ebay.co.uk/itm/NEMA34-NEMA23-12Nm-8-5Nm-4-5Nm-3Nm-2-2Nm-C >losed-Loop-Stepper-Drive-Motor-Kit-CNC/112373702548?hash=item1a29fe9f94 >:m:mkaanovVt5v3OPJFhuqjl8w). > > My question is, since I have no experience with steppers, how nicely > will LinuxCNC play with a mixed servo / stepper setup? I'm currently > running with a Mesa 5i20, 7i33, 7i42 and 7i37. Can I make use of this > succesfully, with the current boards, or will something need to > change? > > Thanks, > > Philip > If still driven by step-dir signals, which according to the pix they are, then mesa probably has the interface cards to use. I'm partial to the 7i90HD, with 3 7i42TA's to keep the noises and surges out of the delicate 3.3 volt fpga in the 7i90. Gives you 72 total pins of i/o and your choice of stepper or servo drives. That and a pi are running my sheldon lathe with all sorts of gingerbread in the gui dept. Independant x/z dials on the apron to replace the hand cranks. I've i/o I haven't figured out a use for, rare in most builds.
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) Genes Web page <http://geneslinuxbox.net:6309/gene> ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
