Thanks all for testing the video link. I found out that the only universal way to post video is to post to Youtube.
So much of if you can see a video or not depends on the email reader and your OS. But Youtube seems to generally work https://youtu.be/CiKr-slum1Y On Sat, Jun 27, 2020 at 12:28 AM Gene Heskett <[email protected]> wrote: > On Saturday 27 June 2020 03:10:46 Chris Albertson wrote: > > > I figured this would be easy and I was right. > > > > The HAL and INI files are produced by Stepconf with no edits. I > > connect a cheap $5 hobby servo motor to the parallel port pin #16 with > > no extra hardware, just a wire. I also run 5 volts DC to the motor. > > The default signal generated by pwmgen and intended to control > > spindle speed is directly used to control this motor. > > > > The neat thing is that no driver electronics are needed, just a direct > > connection to the parallel port. These motors are powerful enough to > > do things like turn and adjust coolant valves or in my case turn the > > 4.7K pot that controls spindle speed. > > > > I used the default HAL file for this test but in real life, some > > multipliers might be needed to scale value to an angle. > > > > Pictures below > > 1) screengrab of scope showing that PWM is 100 Hz so that it will > > certainly work with any hobby servo. > > 2) video of the servo moving in response to clicks on "Axis". (we > > will see if .mp4 video works on this list server) > > > > [image: Logicscreenshot.jpg] > > > The idea should just work, unlike the .mp4 which shows the loading icon > forever. > > > servotest.mp4 > > <https://drive.google.com/file/d/1qnNP15i66IRKaUIIPh33Bh1FKa5AMg5_/vie > >w?usp=drive_web> > > > 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 > -- Chris Albertson Redondo Beach, California _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
