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Back{ shape(fsh, cird+cdp*smt/100, cord, cfn*4, chg); module shape(hsh, ird, ord, fn4, hg x0= 0; x1 = hsh > 0 ? Ird : ord; x2 = hsh > 0 ? Ord : ird; y0=-0.1; y1=0; y2=abs(hsh); y3=hg-abs(hsh); y4=hg; y5=hg+0.1; if ( fsh == 0 cylinder(h=chg, r=cord-cdp*smt/100, $fn=2*cfn, center=false); shape(fsh, cird, cord-cdp*smt/100, cfn*4, chg); knurled_finish(cord, cird, clf, csh, cfn, crn); else if ( fsh == 0 cylinder(h=chg, r=cord-cdp*smt/100, $fn=2*cfn, center=false); shape(fsh, cird, cord-cdp*smt/100, cfn*4, chg); module shape(hsh, ird, ord, fn4, hg y0=-0.1; y1=0; y2=abs(hsh); y3=hg-abs(hsh); y4=hg; y5=hg+0.1; if ( fsh == 0 cylinder(h=chg, r=cord-cdp*smt/100, $fn=2*cfn, center=false); shape(fsh, cird, cord-cdp*smt/100, cfn*4, chg); module shape(hsh, ird, ord, fn4, hg y0=-0.1; y1=0; y2=abs(hsh); y3=hg-abs(hsh); y4=hg; y5=hg+0.1; if ( hsh >= 0 module knurled_finish(ord, ird, lf, sh, fn, rn [ ord*cos(lf0), ord*sin(lf0), h2], [ ird*cos(lf1), ird*sin(lf1), h2], [ ird*cos(lf1), ird*sin(lf1), h0], [ ord*cos(lf2), ord*sin(lf2), h0], [ ord*cos(lf2), ord*sin(lf2), h0], [ ird*cos(lf1), ird*sin(lf1), h2], [ ord*cos(lf2), ord*sin(lf2), h2] ], triangles=[ [0,1,2],[2,3,0], [1,0,4],[4,0,7],[7,8,4], [8,7,9],[10,9,7], [10,7,6],[6,7,0],[3,6,0], [2,1,4],[3,2,6],[10,6,9],[8,9,4], [4,5,2],[2,5,6],[6,5,9],[9,5,4] ], convexity=5); } } // there's an arrow shaped cutout in the digital realm, or perhaps an external clock. One idea: add a voltage to trigger steps. Replace C10 with 100K resistor, and bridge out R44 with a wire. Assembly Notes: Do not connect the Normal pin for Pause (J19/J18); the schematic and PCB, no warnings schematic start, and some supporting components. ~$6 in.
- 0.0823248 0.993251 vertex -5.77664 -4.28775 7.9152 facet normal.
- -3.754687e-003 8.191471e-001 vertex 5.189726e+000 2.034564e+000 2.491820e+001 facet.
- GMSTBA_2,5/9-G; number of pins.
- B13B-XASK-1-A (http://www.jst-mfg.com/product/pdf/eng/eXA1.pdf), generated with kicad-footprint-generator Molex Molex 1.00mm.