On Monday, August 30, 2010 09:26:56 am Ian W. Wright did opine: > Gene, Why use 12 or 24 volt motors when 5volt or less are > readily available? These lower voltage ones are often used > for simple PIC projects or in toys and would give less > problems as an input for the comparators. Presumably you > could protect the inputs by putting a pair of zener diodes > back to back across the chip's input but I may be wrong here
My idea was to have enough output at slow speeds that there would be little or no abiguity. Someone else mentioned detents, and that you get with the stepper motors for free. The ones I bought are about 1.24" square and deep, and appear to be ball bearing equipt. ISTR they were about a tenner each from either H&R or MPJ at the time. > - I'm no electronics expert!!! On paper, as in an EE diploma on the wall, neither am I, but I am self- educated, having quit school after the 8th grade to go fix these new-fangled things called "tv's" in the late 1940's, and I seem to get accused of walking on water occasionally by folks who are easily impressed. I can't unless its frozen but the accusation is nice. ;-) I have since collected a GED, and a diploma from the University of Hard Knocks which is only about a 30 minute drive away. That, and $2.75 might get you a cup of coffee at Starbucks. ;-) > Ian > __________________ > Ian W. Wright > Sheffield UK [...] -- Cheers, Gene "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) Life is knowing how far to go without crossing the line. ------------------------------------------------------------------------------ Sell apps to millions through the Intel(R) Atom(Tm) Developer Program Be part of this innovative community and reach millions of netbook users worldwide. Take advantage of special opportunities to increase revenue and speed time-to-market. Join now, and jumpstart your future. http://p.sf.net/sfu/intel-atom-d2d _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
