knob label

1 files changed, 14 insertions, 0 deletions

diff --git a/another.scad b/another.scad
index 05bfab3..49833ec 100644
--- a/another.scad
+++ b/another.scad
@@ -46,48 +46,49 @@ module the_extruder(
 
  pf = pushfit_metal,
  pf_shell = max(3*layer_height,3*extrusion_width),
 
  // empty spaces
          idler_travel = 3,                      // how far should idler travel when pressed
  idler_clearance=.5,
  pulley_small_d_clearance=.5,
          lever_v_clearance=.7,                  // vertical clearance for the lever
  spring_d_clearance=1,
          protrusion_tolerance_h=.5,             // horizontal tolerance for the motor protrusion
          protrusion_tolerance_v=.5,             // vertical tolerance for the motor protrusion
  mount_screw_d_tolerance=.4,
  idler_v_tolerance=.5,
  knob_bore_d_tolerance=.8,
  st_nut_h_tolerance=.2,
  st_nut_d_tolerance=.2,/* TODO: make it st_nut_w_tolerance */
  st_screw_d_tolerance=.5,
  st_split_w_tolerance = .3,
 
  min_z_shell = 4*layer_height,                  // the very minimal shell thickness along z-axis.
  min_xy_shell = 2*extrusion_width,
 
  body_label = "another", body_label_thickness = layer_height,
+ knob_label = "another", knob_label_thickness = 2*layer_height, knob_label_size=undef,
 
  what="lever",  // lever|body|knob|springpad|*
  left=false,
  vitamins = true,
  bridges = true,
  debug = false,
 ) {
  fnd = 2*PI; fnr = 2*fnd;
  function lu(m,k) = m[search([k],m)[0]][1];
 
  pulley_d = lu(pulley,"d");
  pulley_h = lu(pulley,"h");
  teeth_elevation = lu(pulley,"fe");
  filament_offset = lu(pulley,"g")+filament_d/2;
  pulley_d_clearance = lu(pulley,"ssrc")*2;
 
  idler_filament_offset = filament_path_d/2;
  lever_shell = mount_screwhead_h+0.5;
  lever_thickness=max(spring_d+spring_d_clearance+layer_height*8,idler_h+idler_v_tolerance+2*lever_shell);
  lsd = idler_d-idler_clearance*2; // the diameter of lever thingie
  longwing=(mount_d+mount_screw_d+mount_screw_d_tolerance+spring_d+spring_d_clearance)/2+min_xy_shell;
  shortwing = let(a=mount_d/2,c=(pulley_d+idler_d)/2/sqrt(2))
              sqrt(c*c+pow(a-c,2));
  longwing_travel = idler_travel*longwing/shortwing;
@@ -408,75 +409,88 @@ module the_extruder(
 
  module knob() {
   ch = knob_indent_d/2;
   knob_bore_l = body_h-protrusion_h-pulley_elevation-pulley_h-knob_v_clearance;
   translate([0,0,body_h+epsilon]) {
    mirror([0,0,1]) translate([0,0,-epsilon]) {
     difference() {
      cylinder(d=pulley_d,h=knob_bore_l,$fn=fnd*pulley_d);
      translate([0,0,-1]) difference() {
       cylinder(d=bore_d+knob_bore_d_tolerance,h=knob_bore_l+2);
       translate([-bore_d/2-1,bore_dd-bore_d/2+knob_bore_d_tolerance/2,-1])
       cube([bore_d+2,bore_d/2,knob_bore_l+4]);
      }
     }
    }
    difference() {
     hull() {
      cylinder(d=gearbox_d-2*ch,h=knob_h,$fn=fnd*gearbox_d);
      translate([0,0,ch])
      cylinder(d=gearbox_d,h=knob_h-2*ch,$fn=fnd*gearbox_d);
     }
     for(a=[0:360/knob_indents:359]) rotate([0,0,a])
      translate([0,gearbox_d/2,-1])
      cylinder(d=knob_indent_d,h=knob_h+2,$fn=fnd*knob_indent_d);
+    translate([0,0,-body_h-epsilon]) knob_label();
    }
   }
  }//knob module
+ module knob_label() {
+  if(knob_label) {
+   ll = len(knob_label);
+   lsl = gearbox_d-knob_indent_d;
+   ts = knob_label_size?knob_label_size:min(lsl/ll,gearbox_d/4);
+   translate([0,0,body_h+epsilon+knob_h-knob_label_thickness])
+   linear_extrude(height=knob_label_thickness+epsilon,convexity=64)
+   mirror([left?0:1,0])
+   text(text=knob_label,size=ts,halign="center",valign="center",font="Arial Black");
+  }
+ }
 
  module debug() {
   difference() {
    children();
    if(debug) {
     // spring tensioner debug cutout
     translate([-gearbox_d/2,-longwing,ls_z]) rotate([0,-90,0])
     translate([0,-lever_thickness/2-1,-gearbox_d])
     cube(size=[body_h/2+1,lever_thickness/2+1,gearbox_d+2]);
     // lever axis debug cutout
     translate([mount_d/2,0,-1])
     rotate([0,0,-45])
     cube(size=[gearbox_d-mount_d,gearbox_d-mount_d,body_h+knob_h+2]);
     // idler debug cutout
     translate([0,0,ls_z])
     place_idler()
     rotate([0,0,-45])
     translate([0,0,-lever_thickness/2-epsilon])
     cube(size=[lsd*sqrt(2)/2+1,lsd*sqrt(2)/2+1,
                lever_thickness+2*epsilon]);
     // pushfit debug cutout
     place_idler()
     translate([-idler_d/2+filament_offset,0,ls_z])
     cube(size=[gearbox_d/2,gearbox_d/2+pf_h(pf),body_h-ls_z+knob_h+1]);
    }//if debug
   }//difference
  }
 
  mirrorleft()
  debug()
  if(what=="lever") color("green",0.7) lever();
  else if(what=="body") color("yellow",0.7) body();
  else if(what=="body.label") color("brown",0.7) body_label();
  else if(what=="knob") color("red",0.7) knob();
  else if(what=="springpad") color("blue",0.7) springpad();
  else if(what=="both") {
   color("green",0.7) lever();
   color("yellow",0.7) body();
   color("brown",0.7) body_label();
  }else{
   color("green",0.7) lever();
   color("yellow",0.7) body();
   color("red",0.7) knob();
+  color("brown",0.7) knob_label();
   color("blue",0.7) springpad();
  }
 }
 
 the_extruder(what="*",left=false,debug=true);