fixed comment line

dxfs/10MHz_single_IDT/single_idt.json

@@ -25,7 +25,7 @@
             "prop_text_size": "2.5",
             "scale_unit": "1000",
             "size": "0.002",
-            "substrate": "SI",
+            "substrate": "LINBO",
             "test_number": "1",
             "thickness": "0",
             "title_text_size": "4",

dxfs/25MHz_cross_idt/cross_pattern_idt.json

@@ -0,0 +1,38 @@
+{
+    "parameterSets": {
+        "design default values": {
+            "$fa": "1",
+            "$fs": "0.01",
+            "FONT": "Ubuntu Sans Mono:style=Regular",
+            "SCRIPT_VERSION": "0.0.1",
+            "bond_pad_shape": "square",
+            "c": "3992",
+            "distance": "150",
+            "finger_length": "60",
+            "freq": "2.5e+7",
+            "gap": "0",
+            "has_id_number": "false",
+            "id_text_size": "1",
+            "idt_1_x_offset": "0",
+            "idt_1_y_offset": "0",
+            "idt_2_x_offset": "0",
+            "idt_2_y_offset": "0",
+            "info_block_offset_x": "20",
+            "info_block_offset_y": "-30",
+            "info_block_scale": "0.3",
+            "leg_angle": "10",
+            "leg_length": "0.003",
+            "leg_width": "0.00001875",
+            "n_fingers": "50",
+            "prop_text_size": "2.5",
+            "scale_unit": "1000",
+            "size": "0.002",
+            "substrate": "LINBO",
+            "test_number": "1",
+            "thickness": "0",
+            "title_text_size": "4",
+            "wafer_size_inch": "4"
+        }
+    },
+    "fileFormatVersion": "1"
+}

makefile

@@ -0,0 +1,19 @@
+
+
+all: single_10MHZ pair_10MHZ quadrand_50MHz array_345MHz cross_25MHz
+
+
+single_10MHZ:
+	openscad -o dxfs/10MHz_single_IDT/wafer_layout.dxf wafer_layouts/single_idt.scad -p dxfs/10MHz_single_IDT/single_idt.json
+
+pair_10MHZ:
+	openscad -o dxfs/10MHz_pair_IDT/wafer_layout.dxf wafer_layouts/pair_idt.scad -p dxfs/10MHz_single_IDT/pair_idt.json
+
+quadrand_50MHz:
+	openscad -o dxfs/50MHz_quadrant_array_16/wafer_layout.dxf wafer_layouts/quadrant_array.scad -p dxfs/50MHz_quadrant_array_16/quadrant_array_16_50MHz.json
+
+array_345MHz:
+	openscad -o dxfs/345MHz_grid_10_10_IDT/wafer_layout.dxf wafer_layouts/gird_array_idt.scad -p dxfs/345MHz_grid_10_10_IDT/gird_array_idt.json
+
+cross_25MHz:
+	openscad -o dxfs/25MHz_cross_idt/wafer_layout.dxf wafer_layouts/cross_pattern_idt.scad -p dxfs/25MHz_cross_idt/cross_pattern_idt.json

modules/idt.scad

@@ -1,6 +1,14 @@
 // creates 1 side of the idt
-module delay_line(lambda = 1, n_fingers = 1, finger_length = 50, gap = 0, thickness = 0) {
+module delay_line(
-    // code
+    lambda = 1, 
+    n_fingers = 1, 
+    finger_length = 50, 
+    gap = 0, 
+    thickness = 0
+) {
+
+    // just a very small value that allows the polygons to overlap nicely
+    esp = $fs;
     l45 =lambda*5/4;
     l2 = lambda/2;
     l4 = lambda/4;
@@ -24,8 +32,8 @@ module delay_line(lambda = 1, n_fingers = 1, finger_length = 50, gap = 0, thickn
         [b+f, l2],
         [b+f, l2+l4],
         [b, l2+l4],
-        [b, l4*5-l4],
+        [b, l4*5-l4 + esp],
-        [0, l4*5-l4]
+        [0, l4*5-l4 + esp]
     ];
     union () {
 

wafer_layouts/cross_pattern_idt.scad

@@ -36,7 +36,7 @@ substrate = "LINBO";
 c = 3992.0;
 // si
 // c = 3159.0;
-freq = 50.0e6;
+freq = 25.0e6;
 
 // $fs = (c/freq);