EBo, your name rings a bell all the way back to Paul Corner EMC days, you been arounf here a long time i think
btw: mydynac ( and RayHenry's) approach could not reverse even 1 unit of measure the 'adaptive speed' method could only reduce forward velocity , can not reverse at all there was no dwell, no reverese, no wait till its ready to take a step this constant velocity is totally unsuited to EDM, the finaly mechanical driving element better to jiggly and nervous, else it aint repecting the process uncover the final gear or screw on any real working edm and watch, it approaches a smooth forward motion but IS jiggly and nervous. mydynac repairs cnc edm for a group in sugar grove illinois 'edm network' owned by Ron Vogel ( iirc) the work done more recently by Scott Haase in WI >can< reverse and is limited to an upper and lower bound (same as mine) his uses O-word gcode, mine is hal based ( limits sets by mcodes, and motion implemented thru 'offset' hal component ) his o-word may be easier to debug, dunno, but for immediacy, hal should prove mpre responsive because its 1 less layer of control the idea of orbitining is to use the distance moved away from the 'roughing point' to feed a sine and cosine generator and use that value to move X&Y along the surface of a circular cone. As the Z motion increases, the circle increases ( and drops ) if the process sees a redcuced input signal , ALL axis collapse to the that 'roughing point'. and for the edm gap voltage -> arduino -> threshold comparison -> hal -> motion loop of Mr Haase well there many layers removed by directly connecting a window comparator to a hal 'offset' comp regards tjtr33 ------------------------------------------------------------------------------ Everyone hates slow websites. So do we. Make your web apps faster with AppDynamics Download AppDynamics Lite for free today: http://p.sf.net/sfu/appdyn_d2d_jan _______________________________________________ Emc-developers mailing list Emc-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-developers
