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bandpassbox_cutting_template.scad
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bandpassbox_cutting_template.scad
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/* loudspeaker __MODEL__ */
loudspeaker_number = __NUMBER__;
margin = __MARGIN__; /* mm */
loudspeaker_diameter = __DIAMETER__; /* mm */
internal_closed_box_volume = __SEALEDBOXVOLUME__; /* dm³ (Liter) */
internal_closed_box_width = loudspeaker_diameter + margin; /* mm (x)*/
internal_closed_box_height = max((loudspeaker_diameter + margin) * loudspeaker_number, 1.618 * internal_closed_box_width); /* mm (z)*/
internal_closed_box_depth = internal_closed_box_volume * 1000000 / (internal_closed_box_width * internal_closed_box_height); /* mm (y)*/
saw_thick = __SAWTHICK__; /* saw cut thick in mm */
wood_thick = __WOODTHICK__; /* board thick in mm */
vertical_center = (internal_closed_box_height + (2 * wood_thick)) / 2;
horizontal_center = (internal_closed_box_width + (2 * wood_thick)) / 2;
module board(width, height) {
square(size = [width, height], center = false);
}
module speaker(diam, x, y){
translate([x, y, 0])
circle($fn=360, d=diam, true);
}
module board_speaker(width, height, diam){
difference() {
board(width, height);
for (i = [0:loudspeaker_number-1]) {
speaker(diam, width / 2, margin + (diam / 2) + i * (diam + margin));
}
}
}
/* boards */
front_width = internal_closed_box_width + (2 * wood_thick); /* mm */
front_height = internal_closed_box_height + (2 * wood_thick); /* mm */
side_depth = internal_closed_box_depth; /* mm */
side_height = internal_closed_box_height; /* mm */
top_width = front_width; /* mm */
top_depth = side_depth; /* mm */
/* two times */
for (i = [0:1]) {
translate([0, i*(max(front_height,front_width,side_depth,side_height) + saw_thick), 0]) {
/* one board with speaker */
translate([0, 0, 0])
board_speaker(front_width, front_height, loudspeaker_diameter);
/* one back board */
translate([1 * (front_width + saw_thick), 0, 0])
board(front_width, front_height);
/* two side boards */
for (j = [0:1]) {
translate([2 * (front_width + saw_thick) + j * (side_depth + saw_thick), 0, 0])
board(side_depth, side_height);
}
/* two top/bottom boards */
for (j = [0:1]) {
translate([j * (top_width + saw_thick) + (2 * (side_depth + saw_thick)) + (2 * (front_width + saw_thick)), 0, 0])
board(top_width, top_depth);
}
}
}
internal_ported_box_volume = __PORTEDBOXVOLUME__; /* dm³ (Liter) */
ported_box_port_number = __PORTEDBOXPORTNUMBER__;
ported_box_port_slot_activated = __PORTEDBOXPORTSLOTACTIVATED__;
ported_box_port_slot_width = __PORTEDBOXPORTSLOTWIDTH__; /* mm */
ported_box_port_slot_height = __PORTEDBOXPORTSLOTHEIGHT__; /* mm */
ported_box_port_diameter = __PORTEDBOXPORTDIAMETER__; /* mm */
ported_box_port_length = __PORTEDBOXPORTLENGTH__; /* mm */
internal_ported_box_width = internal_closed_box_width; /* mm (x)*/
internal_ported_box_height = internal_closed_box_height; /* mm (z) */
internal_ported_box_depth = internal_ported_box_volume * 1000000 / (internal_ported_box_width * internal_ported_box_height); /* mm (y)*/
module port(diam, slot, width, height, x, y)
{
if (slot == true) {
translate([x, y, 0]) {
square(size = [width, height], center = false);
}
} else {
translate([x, y, 0]) {
circle($fn=360, d=diam, true);
}
}
}
module board_port(width, height, diam){
difference() {
board(width, height);
/* calculate ports distribition */
port_placing = (internal_ported_box_width + (2 * wood_thick)) / (ported_box_port_number + 1);
for (i = [1:ported_box_port_number]) {
if (ported_box_port_slot_activated == false) {
/* circular ports, center is used */
port(ported_box_port_diameter, ported_box_port_slot_activated, ported_box_port_slot_width, ported_box_port_slot_height, i * port_placing, wood_thick + margin + ported_box_port_diameter / 2);
} else {
/* slot ports, left corner is used */
port(ported_box_port_diameter, ported_box_port_slot_activated, ported_box_port_slot_width, ported_box_port_slot_height, (i * port_placing) - (ported_box_port_slot_width / 2),wood_thick);
}
}
}
}
/* boards */
ported_front_width = front_width; /* mm */
ported_front_height = front_height; /* mm */
ported_side_depth = internal_ported_box_depth; /* mm */
ported_side_height = internal_ported_box_height; /* mm */
ported_top_width = front_width; /* mm */
ported_top_depth = ported_side_depth; /* mm */
/* two times */
if (true) {
for (i = [2:3]) {
translate([0, i*(max(front_height,front_width,side_depth,side_height) + saw_thick), 0]) {
/* one board with port */
translate([0, 0, 0])
board_port(ported_front_width, ported_front_height, ported_box_port_diameter);
/* two side boards */
for (j = [0:1]) {
translate([2 * (front_width + saw_thick) + j * (side_depth + saw_thick), 0, 0])
board(ported_side_depth, ported_side_height);
}
/* two top/bottom boards */
for (j = [0:1]) {
translate([j * (top_width + saw_thick) + (2 * (side_depth + saw_thick)) + (2 * (front_width + saw_thick)), 0, 0])
board(ported_top_width, ported_top_depth);
}
}
}
}