Greetings all; Throwing this out to see if it sticks to the wall. 1. Putting a switch on the backgear lever s/b easy enough, shove its status into a GPIO.
2. Making a bar of 4 high output IR LED's, spaced at the same spacing as the grooves in the 4 step sheave under the desk, with a set of IR detectors on an identical bar mounted to the clutch handle so they swing out of the way if the belt clutch is loosened so that hands could get in there and shift the belt. Using a mux16, that would give me 5 bits to use as addresses into steering the mux16 so that the VFD's range, or over/under. Like the whole chain is in the lowest gear, and I ask for 500 rpm, which in terms of motor revs would be way over speed. So I want to put 3 vcp indicator buttons on screen under the tach, a left red one to advise me thats too slow for the motor and present gearing, one green one in the middle that says its ok, and another red one on the right that tells me the motor can't make the requested speed. With the 7i90HD, I have GPIO to throw away, and the thought comes to mind of putting a motor and jack screw to loosen or tighten the belt, with a derailier moved by a geneva gear to move the belt. Eventually, Other than the time to make it, what do you think? Secondary problem, these motors have a bigger shaft and pulley. Should I get a pulley to match this one that only has a 3/4" bore. With an inch larger pitch, getting it started might be a problem even I I did gain 1/4 horse in the ratings. I've done some snooping, but decent steel pulleys seem to carry a hefty premium. And since I'm not instantly equipted to broach, I'd rather not try to bore one of these. 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) 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
