On Wednesday 25 November 2020 01:11:49 John Dammeyer 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
I have used that board too John, but that row of optos on the left are way too slow and had to be removed and bypassed. 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
