Andy, That solution has occurred to me and it might be the way I'll go. I have the stepper and the gecko to drive for it and room in the control box. The speed knob is connected to the rheostats by a chain drive (similar to bicycle chain and sprockets) I can just put a sprocket on the stepper and engage it into the chain at a convenient location.
I can even hide it inside the machine so no one will know it's there. Also there will be no impact on full manual operation. I'll have to do a little dance with variables to convert an "S" value into equivalent rotary or linear motion so the stepper won't know what it's really doing. The default lathe setup has only 2 axes. It is not obvious to me how to add the third axis for the speed knob. Can I add the third axis in the .ini file without messing up anything???? Andy Pugh said >It's a very Heath Robinson[1] solution, but a small stepper motor moving the rheostats would work and would not risk breaking anything. Thanks again, Cecil ------------------------------------------------------------------------------ How ServiceNow helps IT people transform IT departments: 1. Consolidate legacy IT systems to a single system of record for IT 2. Standardize and globalize service processes across IT 3. Implement zero-touch automation to replace manual, redundant tasks http://pubads.g.doubleclick.net/gampad/clk?id=51271111&iu=/4140/ostg.clktrk _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
