On Wednesday 22 February 2017 12:59:30 Jon Elson wrote: > On 02/22/2017 07:39 AM, Gene Heskett wrote: > > Are in fact 60mm's in diameter, which as another poster said is near > > ideal. They must be some sort of a magnetic device internally as the > > detenting is done by the cogging of something magnetic with very > > little actual friction. Finer resolution and many times the quality > > of the Panasonic dials I've lifted from old editing controllers. > > Well worth the sheckels IMO. > > > > Question, since I've yet to cable one up to test it, what with the > > wife here and needing more of my attention now, how does "motion" > > handle the accumulated cranking these can accumulate in their > > encoder modules when the machine is being homed/rehomed? > > Not sure what you are asking. There is a possibility to > "overrun" the axis velocity limit and have it continue to > move when you stop cranking. If you quickly crank back you > can stop the axis. Once you have experienced this, you > learn how fast to crank. I have the hal files set up to > require a button being pushed to enable the encoder to drive > the axis. So, cranking the dial when the button is NOT > pushed has NO effect. I think this is a lot safer, as I > have bumped the dial many times when setting up, and am glad > it did not cause machine movement. See the file : > configs/by_interface/pico/univpwmv/pendant.hal > > These encoders will give 400 counts/rev in quadrature, so > there are some scale factors to make the dial graduations > come out right. That file doesn't have the extra lines to > control spindle override and feedrate override, which I now > have. Also, the ilowpass is a custom component that smooths > the integer encoder counts so it doesn't buzz the servos. > > Jon
Good points Jon, thanks. Marked Important for FFR. 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 Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
