these are all the common params that each wafer layout may need, these will change in the future

common_paramas.scad

@@ -0,0 +1,70 @@
+// ================= openscad prams =================
+$fa = 1;
+$fs = 0.01;
+// ================= openscad prams =================
+
+// ================= meta =================
+SCRIPT_VERSION="0.0.1";
+// this really just need to be any mon font
+FONT="Ubuntu Sans Mono:style=Regular";
+test_number = 1;
+// scale in m
+scale_unit = 1e3;
+// ================= meta =================
+
+
+// ================= IDT =================
+substrate = "SI";
+// linbo
+c = 3992.0;
+// si
+// c = 3159.0;
+freq = 50.0e6;
+
+// $fs = (c/freq);
+
+// inout distance
+distance = 50;
+
+// number of finger
+n_fingers = 50;
+
+// should be 50-70
+finger_length = 60; 
+
+// for tweaking the design
+gap = 0;
+
+// for tweaking the design
+thickness = 0;
+
+has_id_number = false;
+// ================= IDT =================
+
+// ================= bond pad =================
+leg_length = 0.003;
+leg_width = 0.00001875;
+leg_angle = 10;
+size = 0.002;
+bond_pad_shape = "square";
+// ================= bond pad =================
+
+// ================= text =================
+info_block_offset_x=7;
+info_block_offset_y=30;
+info_block_scale=0.3;
+title_text_size = 4;
+prop_text_size = 2.5;
+id_text_size = 1;
+// ================= text =================
+
+// ================= array spacings =================
+number_of_idts_per_quadrent=4;
+idt_x_spacing = 10;
+idt_y_spacing = 12.5;
+// ================= array spacings =================
+
+
+// ================= wafers =================
+wafer_size_inch = 4;
+// ================= wafers =================