refined helix

openscad/foreign/parametric-helix_haystack-mod/haystack_logo_final.svg

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openscad/foreign/parametric-helix_haystack-mod/helix_haystack.scad

@@ -91,7 +91,7 @@ translate([0,0,-base_platform_height/2])difference(){
     translate([-usb_mount_hole_spacing/2,base_platform_radius*0.75,- base_platform_height/6])rotate([90,0,0])cylinder(d = usb_mount_hole_dia, h = 10, center = true, $fn = base_platform_shape);
 }
 // baseplate with pry-hole:
-//translate([0,0,-15])difference(){
-//    translate([0,0,(-base_platform_height/2+1-0.01)])cylinder(r = base_platform_inner_radius+2, h = 2-0.2, center = true, $fn = base_platform_shape);
-//    for (x = [ base_platform_radius*0.75 , -base_platform_radius*0.75 ])translate([0,x,(-base_platform_height/2+1-0.01)])cube([10,2,2+0.01], center=true);
-//}
+translate([0,0,-15])difference(){
+    translate([0,0,(-base_platform_height/2+1-0.01)])cylinder(r = base_platform_inner_radius+2, h = 2-0.2, center = true, $fn = base_platform_shape);
+    for (x = [ base_platform_radius*0.75 , -base_platform_radius*0.75 ])translate([0,x,(-base_platform_height/2+1-0.01)])cube([10,2,2+0.01], center=true);
+}

openscad/foreign/parametric-helix_haystack-mod/helix_haystack_text.scad

@@ -0,0 +1,134 @@
+// number of fragments | a higher fragment count will result in slower render times '20' is sufficient.
+fn = 30; // [0:100]
+//  "sugar phosphate backbones" | part of helix_base module | if adjusted also consider adjusting 'post_distance_apart' or 'center_bridge_length'.
+post_radius = 5; // [0:500]
+post_hole_radius = 1.75; // [0:500]
+// part of helix_base module | if adjusted also consider adjusting 'center_bridge_length'.
+post_distance_apart = 25; // [0:500]
+// "base pairs" length between "sugar phosphate backbones" | part of helix_base module | if adjusted also consider adjusting 'post_distance_apart'.
+center_bridge_length = 55; // [0:500]
+// part of helix_base module | thickness of "basepairs" in relevence to the the Y-axis of 'helix_base' before "linear_extrude" is implemented. further explanation is below.
+center_bridge_width = 1.6; // [0:0.1:500]
+// 'helix_height' adjusts the height of the linear_extruded 'helix_base' module | 'helix_height, helix_twists, helix_twists' all work hand in hand and should be experimented to fully understand the linear_extrude's nature.
+helix_height = 165; // [0:500]
+// 'helix_twists' adjusts the degree of twist in the linear_extruded 'helix_base' module.
+helix_twists = 400; // [0:3600]
+// 'helix_slices' adjusts the number of slices used in the linear_extruded 'helix_base' module | more slices = higher resolution and longer render times, less slices = the contrary | 200 is sufficient.
+helix_slices = 600; // [0:500]
+// this is fun try changing from 0-3 to scale 'helix_base' as it reaches its specified height in 'helix_height' | '1' = 1to1 scale, 0 = 1to0, 2 = 1to2 scale and so on in sequential order.
+helix_scale = 1; // [0:10]
+// the radius of the differenced circle that creates the spaces between each "base pair" | if adjusted you may also want to adjust 'center_bridge_length' and 'post_distance_apart'.
+spacer_radius = 20.25; // [0:500]
+// the height of the differenced circle changing this will result in a visual thickness change, in the Z-axis, of each "basepair".
+spacer_height = 6; // [0:550]
+// the point in the Z-axis at which the spacers will start appearing | 'spacer_start, spacer_increment_distance, and spacer_increment_height all work together to create the "base pairs/ bridges" that appear between each "sugar phosphate backbone/post".
+spacer_start = 0; // [0:550]
+// the distance between each spacer changing this will result in a visual thickness change, in the Z-axis, of each "basepair".
+spacer_increment_distance = 9; // [0:500]
+// the height to which the spacers ascend to and then stop being produced.
+spacer_increment_height = helix_height; // [0:500]
+// the radius of the circle where the standing platform is located at the base of the helix.
+base_platform_radius = 52.5; // [0:500]
+base_platform_inner_radius = 47.5;
+// the height of the above said platform.
+base_platform_height = 20; // [0:100]
+// the controls the number of sides the platform has, 0 defaults to 'fn'.  3, 4, 5, 6 ...
+base_platform_shape = 6; // [0:50]
+
+usb_mount_hole_spacing = 15; // 19-(2*2) ?
+usb_mount_hole_dia = 2.0; // ?
+usb_height = 4.1;
+usb_rectangular_width = 11+1; //presumeably this is 19-4-4 = 11 plus one for wiggle room. needs testing. 
+text=true;
+textdepth=2;
+usb=false;
+
+module logo(path,scale){
+    translate([0,0,0]){
+        scale([scale,scale,1]){
+            linear_extrude(textdepth){
+                import(path,center=true);
+            }
+        }
+    }
+}
+
+module helix_basic(){
+    translate([-post_distance_apart,0,0]){
+        difference(){
+            circle(post_radius,$fn = fn);
+            if(usb){
+                circle(post_hole_radius,$fn = fn);
+            }
+        }
+    }
+    translate([post_distance_apart,0,0]){
+        difference(){
+            circle(post_radius, $fn = fn);
+            if(usb){
+                circle(post_hole_radius, $fn = fn);
+            }
+        }
+       
+    }
+
+    square([center_bridge_length,center_bridge_width],center = true);
+}
+// the basic 2D shape that the helix is extruded upon.
+union(){
+    difference(){
+        linear_extrude(height = helix_height, twist = helix_twists, slices =    helix_slices, scale = helix_scale){
+            helix_basic();
+        }
+        for (a = [ spacer_start : spacer_increment_distance : spacer_increment_height])
+            translate([0, 0, a]) {
+                linear_extrude(height = spacer_height, center = true){
+                    circle(spacer_radius, $fn = fn);
+                }
+            }
+    }
+    // elipsoids on top to cover up the led-holes:
+    rotate([0,0,helix_twists+90+2.1*post_radius-0.5]){
+        translate([post_distance_apart,0,helix_height])scale([1,1,0.25])sphere(r = post_radius, $fn = fn);
+        translate([-post_distance_apart,0,helix_height])scale([1,1,0.25])sphere(r = post_radius, $fn = fn);
+    }
+}
+translate([0,0,-base_platform_height/2])difference(){
+    hull(){ // base
+        translate([0,0,base_platform_height/3])cylinder(r = base_platform_radius-(base_platform_height/2), h = base_platform_height/3, center = true, $fn = base_platform_shape);  
+        translate([0,0,-base_platform_height/4])cylinder(r = base_platform_radius, h = base_platform_height/2, center = true, $fn = base_platform_shape);          
+    }
+    if(usb){
+        translate([post_distance_apart,0,(base_platform_height/2)-(base_platform_height/4)])cylinder(r1 = post_hole_radius*2, r2 = post_hole_radius, h = base_platform_height/2+0.2, center = true, $fn = fn);  
+        translate([-post_distance_apart,0,(base_platform_height/2)-(base_platform_height/4)])cylinder(r1 = post_hole_radius*2, r2 = post_hole_radius, h = base_platform_height/2+0.2, center = true, $fn = fn);  
+    
+    //bottom cutout narrow:
+    translate([0,0,-base_platform_height/2+0.01])cylinder(r = base_platform_inner_radius, h = base_platform_height, center = true, $fn = base_platform_shape);  
+    //bottom cutout wide:
+    translate([0,0,-base_platform_height/2+1-0.01])cylinder(r = base_platform_inner_radius+2, h = 2, center = true, $fn = base_platform_shape);
+    // only draw usb-module-cutouts if desired:
+    
+        // usb-module:
+        translate([0,base_platform_radius*0.75,- base_platform_height/6])rotate([90,0,0])cube([usb_rectangular_width,usb_height,15],center=true); //cylinder(d = usb_height, h = 10, center = true, $fn = fn);
+        // usb-screw-holes:
+        translate([usb_mount_hole_spacing/2,base_platform_radius*0.75,- base_platform_height/6])rotate([90,0,0])cylinder(d = usb_mount_hole_dia, h = 15, center = true, $fn = base_platform_shape);
+        translate([-usb_mount_hole_spacing/2,base_platform_radius*0.75,- base_platform_height/6])rotate([90,0,0])cylinder(d = usb_mount_hole_dia, h = 15, center = true, $fn = base_platform_shape);
+    }
+    if(text){
+        rotate([49,0,0]){
+            translate([0,-23.25,32.35]){
+                #logo("haystack_logo_final.svg",0.2);
+            }
+        }
+    }
+}
+// baseplate with pry-hole:
+if(usb){
+    translate([0,0,-15]){
+        difference(){
+            translate([0,0,(-base_platform_height/2+1-0.01)])cylinder(r = base_platform_inner_radius+2, h = 2-0.2, center = true, $fn = base_platform_shape);
+            for (x = [ base_platform_radius*0.80 , -base_platform_radius*0.80 ])translate([0,x,(-base_platform_height/2+1-0.01)])cube([10,2,2+0.01], center=true);
+        }
+    }
+}
+