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0]; //Second row interface placement sync_in = [first_col, first_row, 0]; sync_in = [first_col, fourth_row, 0]; //Fifth row interface placement f_tune = [second_col, fifth_row, 0]; pwm_duty = [second_col, fourth_row, 0]; //Fifth row interface placement f_tune = [width_mm/2 + h_margin, top_row, 0]; left_rib_x = thickness * 1; h_wall(h=4, l=right_rib_x); // middle-bottom h rib // h_wall(h=4, l=right_rib_x); // middle horizontal rib // one more to mount a circuit board sideways on module x1_7seg_14_22mm_display() { cube([12.25, 19.25, thickness]); } module knurled_cyl(chg, cod, cwd, csh, cdp, fsh, smt) { cord=(cod+cdp+cdp*smt/100)/2; cird=cord-cdp; cfn=round(2*cird*PI/cwd); clf=360/cfn.

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