Hi, I’m using Machinekit on a BBB to drive my small lathe, i’ve got everything working pretty well now, but I would like to improve the homing accuracy.
I’m using micro switches but I can only home to within about 0.2mm, this isn’t normally a problem as I just put a piece of scrap in the chuck take a cut and then measure it. but sometimes It would be nice if I could turn the lathe off mid session and resume at a later date without removing the stock form the chuck. I noticed that there is an option to home using encoder index signals so I ordered a couple of quadrature encoders, but having read some more, i’m now not sure if that is actually possible on a stepper system, also I don’t have enough suitable IO pins to connect the encoders to either the pru or the eQEP counters, I could rearrange my wiring to free up 4 pins to run the two encoders in counter mode. Do people manage to get better homing accuracy/repeatability? Any advice would be gratefully received. Cheers Russell -- website: http://www.machinekit.io blog: http://blog.machinekit.io github: https://github.com/machinekit --- You received this message because you are subscribed to the Google Groups "Machinekit" group. To unsubscribe from this group and stop receiving emails from it, send an email to machinekit+unsubscr...@googlegroups.com. Visit this group at https://groups.google.com/group/machinekit. For more options, visit https://groups.google.com/d/optout.
