What role does the USB port play? On Wed, Nov 25, 2020 at 12:16 AM John Dammeyer <jo...@autoartisans.com> wrote:
> > Granted.. I know these are pretty basic. You can usually find them for > > under 10 dollars. They do work quite well though. I was working on > some > > youtube content and was goofing around with this bob and the printer > port. > > Setting up a pwmgen to test the analog out unearthed some things.. > > > > -It isn't very linear. lincurve is your friend.. It can be off by as > much > > as .5v over the range. > > -it is sloooowwwww. It is most likely a simple low pass. The photo here > > is of a 1khz pwm signal modulated by a 1hz (yes - hz) sin wave. You can > > already see it is phase shifting. 10hz and it is attenuated to about 2v > > p-p. > > -the pwm frequency didn't really affect the linearness or performance. > > > > http://electronicsam.com/images/greenmachine/IMG_20201124_183913.jpg > > > > one of these bobs... > > > > http://electronicsam.com/images/greenmachine/IMG_20201124_183919.jpg > > > > Hey how about that. I have one of those too. Never even realized it had > a 0-10V out. My plan was to connect it to the second P Port on the MESA > 7i92H. I guess I should get back to that project and try it out. I'll > report the results when I'm done. > > John Dammeyer > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > -- "Anyone who believes exponential growth can go on forever in a finite world is either a madman or an economist." -Kenneth Boulding, economist Corporations are NOT people and money is NOT speech! _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
