On Tuesday 19 May 2020 17:28:40 Dan Henderson wrote: > Thanks Gene. I too dabbled in Amiga ARexx back in the day. I was / > still am a Commodore aficionado. To this day, I have working Amiga, > C-128, and C64 hardware. I prefer Assembly Language over BASIC for > obvious reasons with speed being foremost among them. But I digress... > > I ended up building a reversing cirucuit with a Tyco 12v DPDT relay > capable of 15a / 30 VDC switching. So long as I don't attempt a > direction flip that exceeds those max ratings I should be good. I've > tested 800 rpm CW - CCW -CW without so much as a batted eye -- it was > quite smooth with the delays factored in and all. Quite happy with > this setup. I have the added bonus of a semi brake action on the CCW > motion. An M5 will stop that rotation quite quickly due to the the > mc2100 power off which kills the slow decell ramp built-in with that > board. > > Now to move on and dial-in the RPM reading in PY Panel. My scale / > range is not set right. I can turn the RPM at 50 or less and it shows > 200 rpm on the Pypanel.
What do you have for an encoder? Remember, a 50 slot opto disk is actually 200 "edges" which is what you may be displaying. Depends on the mode the encoder is running in. > Cheers! > 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
