On 01.03.17 09:14, Chris Albertson wrote: > Oh, you are planning to MAKE the encoder? You can always salvage one off > an old printer or copy machine. I've found encoder wheels with thousands > of divisions and the optical sensor to read them. Also you can find good > plastic gears and you can make a geared encoder that runs faster then the > hand wheel or even use the gear teeth and two gear tooth sensors as the > encoder.
For an MPG, a small stepper motor out of a junked scanner or old floppy drive can often have ample steps. The magnetic detents feel pretty good, I reckon, and the two coils provide quadrature A/B OOTB. Whether a couple of comparators, or just transistors, pick up the output is up to the hacker. ISTR that Kent biased them up with a small voltage, increasing both the output amplitude and the detetnt strength about half a decade back. Erik ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, SlashDot.org! http://sdm.link/slashdot _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
