yoda.scad

fudge = 0.1;




// Row 4 decorated Cherry MX key

// dimensions Cherry MX connector
c_corr = .1;                // tolerance
c_horiz = 1.1;              // horizontal bar width
c_vert = 1.0;               // vertical bar width
c_dia = 4;                  // cross width
c_depth = 4.5;                // connector depth
c_space = 4;                // height of hollow inside
c_inset = .75;              // distance connector start to keycap base

//cut out size
cut_h=9;
cut_x=1.4;
cut_y=1;

// keycap shape
head_tilt = 3;              // rotation of top around x-axis
head_pos = 2.25;            // keycap top y-offset
head_height = 11;           // z-offset of keycap top from the bottom of the keycap
cutoff = 6.5;               // cut keycap here to make room for decoration
                            // must be bigger than c_space + c_corr
key_scale = [1.0,1.00,1.00]; // overall scale

// stuff
$fn = 64;

// create basic key shape from dxf frames for base and top
module shape()
{
    hull()
    {
        translate([0,0,-c_inset]) linear_extrude(height=.01) import("base.dxf");
        rotate([head_tilt,0,0]) translate([0,6.75+head_pos,head_height-c_inset]) linear_extrude(height=.01) import("top.dxf");
    }
}

// construct the connector pin
module connector() 
{
    translate([0,0,c_depth/2-.1]) union()
    {
        cube([c_vert+c_corr,c_dia+c_corr,c_depth+.1], center=true );
        cube([c_dia+c_corr,c_horiz+c_corr,c_depth+.1], center=true );
    }
}

module yoda()
{
import("Yoda-Lite.stl");
}


// create the hollow key with decoration
module key()
{
    difference()
    {
        // combine basic key shape with decoration
        union()
        {

            difference()
            {
                shape();
                rotate([head_tilt,0,0]) translate([0,0,5+cutoff-c_inset]) cube([100,100,10], center=true);
            }
        }

        // subtract scaled basic shape, cut at minimum required height
        difference()
        {
            scale([.9,.9,.9]) translate([0,0,-1]) shape();
            translate([0,0,5+c_space+c_corr]) cube([100,100,10], center=true);
        }
    }
}

// combine key, pin and connector. cleanup below the key
scale(key_scale) difference()
{
union()
{
scale([0.25,0.25,0.25])
yoda();
translate([0,0,-3.5])
rotate([0,0,35])
	difference()
	{
	cylinder( h=c_space+c_corr, r=(c_dia+c_corr+1.5)/2 );
	connector();
}
}
//union()
//{
	//cylinder( h=c_space+c_corr, r=(c_dia+c_corr+1.5)/2 );				
//}
//connector();
//translate([0,0,-50-c_inset]) cube([100,100,100], center=true);
}