Improved S_300_12 PSU.

vitamins/psu.scad

@@ -259,13 +259,15 @@ module psu(type) { //! Draw a power supply
                             square(16, center = true);
                     }
 
-        // earth strap
         tab_w = w / 2 + cutout[2].x;
+        // if the cutout is too wide, then don't draw earth strap, pillar and screw
+        if (tab_w - bt > 0) {
+            // earth strap
             color("silver")
                 translate([-l / 2, w / 2 - tab_w, z])
                     cube([left, tab_w - bt, lt]);
 
-        // Earth pilar and screw
+            // Earth pillar and screw
             earth_inset = 4.5;
             earth_d = 5;
             translate([-l / 2 + earth_inset, w / 2 - tab_w / 2]) {
@@ -277,6 +279,7 @@ module psu(type) { //! Draw a power supply
                         spring_washer(M3_washer)
                             screw(M3_pan_screw, 8);
             }
+        }
 
         // terminal block
         tb = terminals[2];

vitamins/psus.scad

@@ -83,13 +83,74 @@ KY240W =
 // This PSU, and ones very like it, are sold by LulzBot, and various sellers on eBay.
 // The screw layout specified here uses the inner set of screw-mounts on the PSU, which are M4.
 // The outer set don't appear to be M3, even though the datasheet claims they are.
-S_300_12 =
+S_300_12 = [
-    ["S_300_12", "S-300-12", 215, 115, 50, M4_cap_screw, M4_clearance_radius, false, 0, 0, [],
+    "S_300_12",
-        [  [[[ 215 / 2 - 32.5,  115 / 2 - 82.5],
+    "S-300-12",// part name
-            [ 215 / 2 - 32.5,  115 / 2 - 32.5],
+    215, 115, 50,// length, width, height
-            [ 215 / 2 - 182.5, 115 / 2 - 82.5],
+    M4_cap_screw, M4_clearance_radius,// screw type and clearance
-            [ 215 / 2 - 182.5, 115 / 2 - 32.5]]]
+    false,// true if ATX style
+    13,// terminals bay depth
+    0,// heatsink bay depth
+    [// terminals
+        9,// count
+        18,// y offset
+        st_terminals
     ],
+    // faces
+    [
+        [// f_bottom, bottom
+            [// holes
+                [215/2 - 32.5, 115/2 - 82.5], [215/2 - 32.5, 115/2 - 32.5], [215/2 - 182.5, 115/2 - 82.5], [215/2 - 182.5, 115/2 - 32.5]
+            ],
+            1.5,// thickness
+            [],// cutouts
+            false,// grill
+            [],[],[]// fan, iec, rocker
+        ],
+        [// f_top, top
+            [],// holes
+            0.5,// thickness
+            [],// coutouts
+            false,// grill
+            [215/2 - 47.5, 115/2 - 37.5, fan50x15]
+        ],
+        [// f_left, front (terminals) after rotation
+            [],// holes
+            0.5,// thickness
+            [// cutouts
+                [
+                [-56, -25], [-56, -17],
+                [-60, -17], [-60, 0],
+                [115/2, 0], [115/2, -25]
+                ]
+            ],
+            false,// grill
+        ],
+        [// f_right, back after rotation
+            [], // holes
+            1.5,// thickness
+            [],// cutouts
+            false,// grill
+        ],
+        [// f_front, right after rotation
+            [// holes, offset from center
+                [215/2 -  32.5,-15], [215/2 - 182.5,-15],
+                [215/2 -  32.5, 10], [215/2 - 182.5, 10]
+            ],
+            1.5,// thickness
+            [],// cutouts
+            false,// grill
+        ],
+        [// f_back, left after rotation
+            [// holes, offset from center
+                [215/2 -  32.5, 15], [215/2 - 182.5, 15]
+            ],
+            1.5,// thickness
+            [],// cutouts
+            false,// grill
+        ],
+    ],
+    // accessories to add to BOM
     []
 ];
 
@@ -102,3 +163,4 @@ External =
 psus = [PD_150_12, S_250_48, ATX500, KY240W, S_300_12];
 
 use <psu.scad>
+