Made stepper motor encap paramatric.

Made connector position based on encap height and added PCB.

readme.md

@@ -3413,6 +3413,7 @@ NEMA stepper motor model.
 | ```NEMA_body_radius(type)``` | Body radius |
 | ```NEMA_boss_height(type)``` | Boss height |
 | ```NEMA_boss_radius(type)``` | Boss around the spindle radius |
+| ```NEMA_cap_heights(type)``` | Height of the end cap at the corner and the side |
 | ```NEMA_hole_pitch(type)``` | Screw hole pitch |
 | ```NEMA_length(type)``` | Body length |
 | ```NEMA_radius(type)``` | End cap radius |

tests/stepper_motors.scad

@@ -22,12 +22,12 @@ include <../vitamins/stepper_motors.scad>
 use <../utils/layout.scad>
 
 module stepper_motors()
-    layout([for(s = stepper_motors) NEMA_width(s)], 5) {
+    layout([for(s = stepper_motors) NEMA_width(s)], 5) let(m = stepper_motors[$i]) {
         rotate(180)
-            NEMA(stepper_motors[$i], 0, $i > 1 && $i < 5);
+            NEMA(m, 0, m == NEMA17M || m == NEMA17M8);
 
         translate_z(4)
-            NEMA_screws(stepper_motors[$i], M3_pan_screw, n = $i, earth = $i > 4 ? undef : $i - 1);
+            NEMA_screws(m, M3_pan_screw, n = $i, earth = $i > 4 ? undef : $i - 1);
     }
 
 if($preview)

vitamins/stepper_motor.scad

@@ -26,6 +26,7 @@ include <ring_terminals.scad>
 include <../vitamins/pin_headers.scad>
 use <../utils/tube.scad>
 use <../utils/thread.scad>
+use <../utils/round.scad>
 use <washer.scad>
 use <rod.scad>
 
@@ -38,6 +39,8 @@ function NEMA_boss_height(type) = type[6]; //! Boss height
 function NEMA_shaft_dia(type)   = type[7]; //! Shaft diameter
 function NEMA_shaft_length(type)= type[8]; //! Shaft length above the face, if a list then a leadscrew: length, lead, starts
 function NEMA_hole_pitch(type)  = type[9]; //! Screw hole pitch
+function NEMA_cap_heights(type) = type[10]; //! Height of the end cap at the corner and the side
+
 function NEMA_holes(type)       = [-NEMA_hole_pitch(type) / 2, NEMA_hole_pitch(type) / 2]; //! Screw positions for for loop
 function NEMA_big_hole(type)    = NEMA_boss_radius(type) + 0.2; //! Clearance hole for the big boss
 stepper_body_colour = "black";
@@ -59,12 +62,13 @@ module NEMA(type, shaft_angle = 0, jst_connector = false) { //! Draw specified N
     boss_rad = NEMA_boss_radius(type);
     boss_height =NEMA_boss_height(type);
     shaft_rad = NEMA_shaft_dia(type) / 2;
-    cap = 8;
+    cap = NEMA_cap_heights(type)[1];
+    cap2 = NEMA_cap_heights(type)[0];
     vitamin(str("NEMA(", type[0], "): Stepper motor NEMA", round(NEMA_width(type) / 2.54), " x ", length, "mm"));
-    thread_d = 3;                                                           // Is this always the case?
+    thread_d = 3;                                                       // Is this always the case?
 
     module cap_shape(end)
-        difference() {
+        round(0.5, $fn = 32) difference() {
             intersection() {
                 square([side, side], center = true);
 
@@ -92,22 +96,40 @@ module NEMA(type, shaft_angle = 0, jst_connector = false) { //! Draw specified N
             cap_shape(1);
     }
 
-    tabSize = [16, 4, 2.5];
+    pcb_thickness = 1.6;
+    header = jst_ph_header;
+    socket_size = hdr_box_size(header);
+    tabSize = [16, 4, cap - hdr_ra_height(header) - pcb_thickness];
     color(stepper_cap_colour) {                                     // aluminium end caps
-        for(end = [-1, 1])
+        for(end = [-1, 1]) {
             translate_z(-length / 2 + end * (length - cap) / 2)
                 linear_extrude(cap, center = true)
                     cap_shape(end);
 
+            translate_z(-length / 2 + end * (length - cap2) / 2)
+                linear_extrude(cap2, center = true)
+                    difference() {
+                        cap_shape(end);
+
+                        circle(body_rad);
+                    }
+        }
+
         if(jst_connector)
             translate([-tabSize.x / 2, side / 2, -length])
                 cube(tabSize);
     }
 
     if(jst_connector)
-        translate([0, side / 2 - 2, -length + tabSize.z + 5.75 / 2])
+        translate([0, side / 2, -length + cap - hdr_ra_height(header)]) {
-            rotate([-90, 0, 0])
+            rotate(180)
-                jst_xh_header(jst_xh_header, 6);
+                not_on_bom()
+                    jst_xh_header(header, 6, true);
+
+            translate_z(-pcb_thickness / 2)
+                color("green")
+                    cube([socket_size.x + 5 * 2, tabSize.y * 2, pcb_thickness], true);
+        }
 
     if(show_threads)
         for(x = NEMA_holes(type), y = NEMA_holes(type))

vitamins/stepper_motors.scad

@@ -22,14 +22,14 @@
 //
 
 //                                   corner  body    boss    boss          shaft
-//                     side, length, radius, radius, radius, depth, shaft, length,      holes
+//                     side, length, radius, radius, radius, depth, shaft, length,      holes, cap heights
-NEMA17  = ["NEMA17",   42.3, 47,     53.6/2, 25,     11,     2,     5,     24,          31];
+NEMA17  = ["NEMA17",   42.3, 47,     53.6/2, 25,     11,     2,     5,     24,          31,    [11.5,  9]];
-NEMA17M = ["NEMA17M",  42.3, 40,     53.6/2, 25,     11,     2,     5,     20,          31];
+NEMA17M = ["NEMA17M",  42.3, 40,     53.6/2, 25,     11,     2,     5,     20,          31,    [12.5, 11]];
-NEMA17M8= ["NEMA17M8", 42.3, 40,     53.6/2, 25,     11,     2,     8,     [280, 8, 4], 31];
+NEMA17M8= ["NEMA17M8", 42.3, 40,     53.6/2, 25,     11,     2,     8,     [280, 8, 4], 31,    [12.5, 11]];
-NEMA17S = ["NEMA17S",  42.3, 34,     53.6/2, 25,     11,     2,     5,     24,          31];
+NEMA17S = ["NEMA17S",  42.3, 34,     53.6/2, 25,     11,     2,     5,     24,          31,    [8,     8]];
-NEMA16  = ["NEMA16",   39.5, 19.2,   50.6/2, 50.6/2, 11,     2,     5,     12,          31];
+NEMA16  = ["NEMA16",   39.5, 19.2,   50.6/2, 50.6/2, 11,     2,     5,     12,          31,    [8,     8]];
-NEMA14  = ["NEMA14",   35.2, 36,     46.4/2, 21,     11,     2,     5,     21,          26];
+NEMA14  = ["NEMA14",   35.2, 36,     46.4/2, 21,     11,     2,     5,     21,          26,    [8,     8]];
-NEMA23  = ["NEMA23",   56.4, 51.2,   75.7/2, 35,   38.1/2, 1.6,   6.35,    24,        47.1];
+NEMA23  = ["NEMA23",   56.4, 51.2,   75.7/2, 35,   38.1/2, 1.6,   6.35,    24,        47.1,    [8,     8]];
 
 stepper_motors = [NEMA14, NEMA16, NEMA17S, NEMA17M, NEMA17, NEMA23];