5x6-split-kb/rev2/3d-models/top-dampener.scad

$fn = 128;

$space = 3;
$width = 15.5;
$length = $width;
$height = 1;
$holes = $height*4;
$cut = $holes/2*-1;
$clearance = 0.2;
$switchDistance = $width+ $space;

// shell width is set to double of actual shell width and results in haft of the actual value due to division by 2.
// this needs to be fixed
$shellWidth = 12;
$shellHeight = 3.5 + $clearance;



$columns = 6;
$rows = 5;

$fingerStep = 5;

$xBase = (($width + $space) * $columns) + $space;
$yBase = (($length + $space) * $rows) + $space;

$pcbHeight = 1.6;
$dampenerHeight = 1;

$pcbDampenerOffset = $pcbHeight + $dampenerHeight;


module pin(){
    cylinder(h=$holes, r=1, center=false);
}

module switch($diodesTop = false){
    $xCenter = $width/2;
    $yCenter = $length/2;
    translate([$xCenter, $yCenter, 0])
        cylinder(h=$holes, r=2.522, center=false);
    translate([$xCenter + 0, $yCenter + 5.9,0])
        pin();
    translate([$xCenter + 5, $yCenter + 3.8,0])
        pin();
    translate([$xCenter + -5, $yCenter + 3.8,0])
        pin();
    translate([$xCenter + -5, $yCenter + -5.15,0])
        pin();
    translate([$xCenter + 5, $yCenter+-5.15,0])
        pin();
    translate([0, $length + 1.4, 0]);
    $dDistanceFromCenter = $switchDistance/2;
    $dWidth = 10.95;
    $dHeight = 1.8;
    if ($diodesTop){
        translate([$xCenter - ($dWidth/2), $yCenter + $dDistanceFromCenter - ($dHeight/2), 0]){
            cube([$dWidth, $dHeight, $holes]);
        }
    }
 }


module switchColumn(){
   difference() {
       translate([-($space/2), -($space/2)])
        cube([$switchDistance, $switchDistance * $rows, $height]);
       for (y=[0:$rows-1]){
          translate([0 * ($width + $space) ,y * ($length+$space) ,0]) {
            switch(y<3);
          }
       }
   }
}

module rightTopDampener(){
    union(){
    switchColumn();
    translate([$switchDistance,0,0])
        switchColumn();
    translate([$switchDistance * 2,5,0])
        switchColumn();
    translate([$switchDistance * 3,0,0])
        switchColumn();
    translate([$switchDistance * 4,-5,0])
        switchColumn();
    translate([$switchDistance * 5,-5,0])
        switchColumn();
    }
}

module leftTopDampener(){
    rotate([0,180,0]){
        rightTopDampener();
    }
}


module topDampeners(){
translate([10,0,0]){    
rightTopDampener();
}
translate([-10,0,0]){
leftTopDampener();
}
}

module case(){
    // Then adjust the shim, aux and pico.
    // Last add magnets, don't forget the clearance.
    $baseHeight = 6.3;
    
    points = [
        [0,0],
        [0, $switchDistance * $rows],
        [$switchDistance * 2, $switchDistance * $rows],
        [$switchDistance * 2, $switchDistance * $rows + $fingerStep],
        [$switchDistance * 3, $switchDistance * $rows + $fingerStep],
        [$switchDistance * 3, $switchDistance * $rows],
        [$switchDistance * 4, $switchDistance * $rows],
        [$switchDistance * 4, $switchDistance * $rows - $fingerStep],
        [$switchDistance * 6, $switchDistance * $rows - $fingerStep],
        [$switchDistance * 6, 0 - $fingerStep],
        [$switchDistance * 4, 0 - $fingerStep],
        [$switchDistance * 4, 0],
        [$switchDistance * 3, 0],
        [$switchDistance * 3, 0 + $fingerStep],
        [$switchDistance * 2, 0 + $fingerStep],
        [$switchDistance * 2, 0],
    ];
        
    module magnets(){
        $magnetWidth = 4;
        $magnetRadius = ($magnetWidth / 2) + $clearance/2;
        $magnetHeight = 2 + $clearance;
        $offset = ($shellWidth / 2 / 2) -0.8 ;
        // Set Z-origin to align with shell top
        translate([0, 0, $shellHeight -$magnetHeight]){
            translate(points[0] + [-$offset, -$offset])
                cylinder(h=$magnetHeight, r=$magnetRadius);
            translate(points[1] + [-$offset, $offset])
                cylinder(h=$magnetHeight, r=$magnetRadius);
            translate(points[8] + [$offset, $offset])
                cylinder(h=$magnetHeight, r=$magnetRadius);
            translate(points[9] + [$offset, -$offset])
                cylinder(h=$magnetHeight, r=$magnetRadius);
        }
    }
    module aux(){
        $topLeftOfPcbToCenterOfAux = 15.4;
        $measurementPcbPlaneToCenterOfAux = 2.8;
        $auxClearanceFromBase = $measurementPcbPlaneToCenterOfAux - $dampenerHeight;
        $auxHoleRadius = 3.15;
        $auxHoleLength = 17 + $shellWidth/2;
        $auxCableRadius = 4.15;
        // Move to the position along the wall the aux will be 
        translate([-($shellWidth/2 + $clearance),$switchDistance * $rows - $topLeftOfPcbToCenterOfAux,-$auxClearanceFromBase])
            // Make cylinder perpendicular with the wall
            rotate([0,90,0]){
                // Aux component clearance
                cylinder(h=$auxHoleLength,r=$auxHoleRadius);
                // Aux cable housing clearance
                cylinder(h=$shellWidth/2,r=$auxCableRadius );
            }
    }
    module pico(){
        $topLeftEdgeOfPcbToCenterOfUsb = 23;
        $usbHoleWidth = 12;
        $usbHoleHeight = 9;
        $usbOffsetFromPcb = 4 - $pcbDampenerOffset;
        $picoPcbClearanceFromBase = 5.4 - $pcbDampenerOffset;
        $picoWidth = 25;
        $picoLength = 53;
        // Move to position along the wall the usb will be
        translate([$topLeftEdgeOfPcbToCenterOfUsb - ($usbHoleWidth/2), $switchDistance * $rows, -$usbOffsetFromPcb]){
            union() {
                // Create a hole for the usb cable to go through
                cube([$usbHoleWidth,$shellWidth,$usbHoleHeight]);
                // Move inside the shell
                translate([-(($picoWidth - $usbHoleWidth)/2),$clearance - $picoLength, +$usbOffsetFromPcb - $picoPcbClearanceFromBase])
                    // Make clearance downwards for the pico board
                    cube([$picoWidth,$picoLength, $picoLength]);
                
            }
        }
    }
    module shim(){
        $shimPoints = [
            [0 - $shellWidth / 2, - $baseHeight],
            [$switchDistance * $columns + $shellWidth/2 + $clearance, 0], 
            [$switchDistance * $columns + $shellWidth/2 + $clearance, - ($baseHeight + $clearance)]
        ];
        // Face z/x-plane
        rotate([90,0,0])    
            // Move in front of model on the y-axis
            translate([0,0,-500])
                // Extrude it through the case
                linear_extrude(99999)
                    polygon($shimPoints);
    }
    module body(){
        union() {
            linear_extrude($shellHeight){
                difference(){
                    offset(r=$shellWidth/2 + $clearance, chamfer=true) polygon(points);
                    offset(r=$clearance) polygon(points);
                }
            }
            translate([0,0,-$baseHeight])
                linear_extrude($baseHeight){
                    offset(r=$shellWidth/2 + $clearance, chamfer=true) polygon(points);
                }
        }
    }

    difference(){
        body();
        shim();
        pico();
        aux();
        magnets();
    }   
}

//topDampeners();
case();