189 lines
4.7 KiB
OpenSCAD
189 lines
4.7 KiB
OpenSCAD
include <../modules/bidirectional_idt.scad>
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include <../modules/parameter_text.scad>
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include <../modules/wafer.scad>
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// ================= README =================
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// these are the normal parameters used by
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// each one of the layout scripts
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// however they do dont directly use them
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// and instead have thier own copy
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//
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// this was done in order to have more control
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// over each of the scripts themsevels
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// allowing each to have even more parameters
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// and having them show up in the open scad
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// parameters window
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// ================= README =================
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// ================= openscad prams =================
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// min angle
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$fa = 0.1;
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// min size
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$fs = 0.01;
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// ================= openscad prams =================
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// ================= meta =================
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// version number of the current script
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SCRIPT_VERSION="0.0.1";
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// font for layout
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FONT="Ubuntu Sans Mono:style=Regular";
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// the test number ref number for this set of IDTs
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test_number = 1;
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// this is needed due to the min size value
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// a pre scaler for the given values
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scale_unit = 1e3;
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// ================= meta =================
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// ================= IDT =================
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// the underlying substrate
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substrate = "SI";
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// linbo
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// the aoucstice wave speed in the substrate
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c = 3992.0;
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// si
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// c = 3159.0;
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// the target frequency of the IDT
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freq = 345.0e6;
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// the distance between the input and output IDT
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// should be between 100-200
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distance = 50;
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// the number of fingers the IDT has
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n_fingers = 50;
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// the length of the figure or aperture should be 50-70
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finger_length = 60;
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// the gap between both sides of the IDT (should be used for tweaking)
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gap = 0;
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// the thickness of the wire the connects all the fingers
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thickness = 0;
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// adds an ID number to an IDT, useful if you have multiple on a wafer
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has_id_number = true;
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// ================= IDT =================
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// ================= bond pad =================
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// the length of the bond pad leg from the edge of the IDT to the center of the bond pad
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leg_length = 0.001;
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// the width of the leg
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leg_width = 0.00001875;
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// the angle the leg comes off from the IDT,
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// positive angle means the leg is angled away
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// negitive angle means the leg is angled inwards
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leg_angle = 10;
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// the size of the bond pad
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size = 0.00075;
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// the shape of the bond pad (not implemented)
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bond_pad_shape = "square";
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// ================= bond pad =================
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// ================= text =================
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info_block_offset_x=28;
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info_block_offset_y=-5;
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// total scale of infoblock
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info_block_scale=0.3;
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// the text size of the heading in the info block
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title_text_size = 4;
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// the size of all the sub items in the info block
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prop_text_size = 2.5;
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// the size of the ID numbers in on the IDTS
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id_text_size = 0.5;
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// ================= text =================
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// ================= wafers =================
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// the size of the wafer in inchs (why inch and not metric like everything else because its standard)
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wafer_size_inch = 4;
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// ================= wafers =================
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// ================= # IDTS =================
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rows = 10;
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cols = 10;
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spacing_x = 4;
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spacing_y = 7;
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// ================= # IDTS =================
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module params() {
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parameter_text(
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str("IDT ", substrate, "#", test_number),
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[
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str("c (ms): ", c),
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str("freq (Hz): ", freq),
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str("distance : ", distance),
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str("n_fingers : ", n_fingers),
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str("finger_length : ", finger_length),
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str("gap : ", gap),
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str("thickness : ", thickness),
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str("leg_length : ", leg_length),
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str("leg_angle : ", leg_angle),
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str("size : ", size),
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str("feat. size (mm): ", (c/freq)*1e3 / 4),
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str("version : ", SCRIPT_VERSION)
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]
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);
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}
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translate([info_block_offset_x, -info_block_offset_y, 0])
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scale([info_block_scale, info_block_scale, info_block_scale])
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params();
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wafer(4*0.0254*scale_unit);
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translate([-spacing_x*rows/2, -spacing_y*cols/2, 0])
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for (x=[0:rows]) {
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for (y=[0:cols]) {
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translate([spacing_x*x, spacing_y*y, 0])
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bi_directional_idt(
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c,
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freq,
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n_fingers,
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distance,
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finger_length,
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gap,
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thickness,
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post_scale=scale_unit,
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center = true,
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has_bond_pads = true,
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bond_pad_angle = leg_angle,
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bond_pad_leg_width = leg_width,
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bond_pad_leg_length = leg_length,
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bond_pad_size = size,
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has_id = has_id_number,
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id_translate = [1.7, -0.5, 0],
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id_rot = [0, 0, 90],
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id_number = x*rows + y
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);
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}
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}
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