ner final version with rouded top... plus test text

Author: Sean Donnellan

openscad/Amplifier/berlinbutton.scad

@@ -1,23 +1,34 @@
-//Draft button for radio replacement
-//Draft structure only not real measurments yet
-//Shape should be approx correct
-//might round corners of top button of needed
-
+//button for radio tape counter reset replacement
+$fn=360; 
+r = 6 ; //This SHOULD NOT be less than 1/2 of top z
 buttonTop = [4,4,11] ;
 buttonBottom = [5,5,6] ;
 buttonBottomCavity = [3.1,3.1,7] ;
 buttonBrim = [6,6,1] ;
 wiggle = .01;
-#difference () {
+textDepth = 1;
+
+module topButton(){
+    difference(){
+        intersection(){
+            //the button (top)
+            cube(buttonTop);
+            //the sphere to be the rounded top (should always be larger (r) than the z of button/2 or button will be
+            translate([buttonTop.x/2,buttonTop.y/2,-r+buttonTop.z]) sphere(r);
+        }
+        translate([buttonTop.x/2,buttonTop.y/2,buttonTop.z-textDepth]) linear_extrude(textDepth+wiggle)text("K",valign="center",halign="center",size=3.5);
+    }
+}
+
+difference () {
     union(){
         //bottom
         cube(buttonBottom);
-        //Brim
-        translate([buttonBottom.x/2-buttonTop.x/2,buttonBottom.y/2-buttonTop.y/2,buttonBottom.z]) cube(buttonTop);
         //top
+        translate([buttonBottom.x/2-buttonTop.x/2,buttonBottom.y/2-buttonTop.y/2,buttonBottom.z]) topButton();
+        //brim
         translate([buttonBottom.x/2-buttonBrim.x/2,buttonBottom.y/2-buttonBrim.y/2,buttonBottom.z]) cube(buttonBrim);
     }
     //cavity
     translate([buttonBottom.x/2-buttonBottomCavity.x/2,buttonBottom.y/2-buttonBottomCavity.y/2,-wiggle]) cube(buttonBottomCavity+[0,0,wiggle]);
-}    
-    translate([buttonBottom.x/2-buttonBottomCavity.x/2,buttonBottom.y/2-buttonBottomCavity.y/2,-wiggle]) cube(buttonBottomCavity+[0,0,wiggle]);
+}