// Chip capacitor model

// 0402
chipLength = 1.05;
chipWidth = 0.55;
chipHeight = 0.55;
contactLength = 0.3;
contactThickness = 0.03;

module contactCap()
{
            // X- end cap
            // outer surface
            translate([(chipLength - contactThickness) / -2, 0, 0]){cube([contactThickness, chipWidth - (2 * contactThickness), chipHeight - (2 * contactThickness)], true);}
            // bottom surface
            translate([(chipLength - contactLength) / -2, 0, (chipHeight - contactThickness) / -2]){cube([contactLength - (2 * contactThickness), chipWidth - (2 * contactThickness), contactThickness], true);}
            // top surface
            translate([(chipLength - contactLength) / -2, 0, (chipHeight - contactThickness) / 2]){cube([contactLength - (2 * contactThickness), chipWidth - (2 * contactThickness), contactThickness], true);}
            // Y- surface
            translate([(chipLength - contactLength) / -2, (chipWidth - contactThickness) / -2, 0]){cube([contactLength - (2 * contactThickness), contactThickness, chipHeight - (2 * contactThickness)], true);}
            // Y+ surface
            translate([(chipLength - contactLength) / -2, (chipWidth - contactThickness) / 2, 0]){cube([contactLength - (2 * contactThickness), contactThickness, chipHeight - (2 * contactThickness)], true);}
            // outer Y- rounding
            translate([(chipLength - (2 * contactThickness)) / -2, (chipWidth / -2) + contactThickness, 0]){cylinder(chipHeight - (2 * contactThickness), contactThickness - 0.001, contactThickness - 0.001, true);}
            // outer Y+ rounding
            translate([(chipLength - (2 * contactThickness)) / -2, (chipWidth / 2) - contactThickness, 0]){cylinder(chipHeight - (2 * contactThickness), contactThickness - 0.001, contactThickness - 0.001, true);}
            // outer Z- rounding
            translate([(chipLength - (2 * contactThickness)) / -2, 0, (chipHeight / -2) + contactThickness]){rotate([90,0,0]){cylinder(chipWidth - (2 * contactThickness), contactThickness - 0.001, contactThickness - 0.001, true);}}
            // outer Z+ rounding
            translate([(chipLength - (2 * contactThickness)) / -2, 0, (chipHeight / 2) - contactThickness]){rotate([90,0,0]){cylinder(chipWidth - (2 * contactThickness), contactThickness - 0.001, contactThickness - 0.001, true);}}
            // outer corner balls
            translate([(chipLength - (2 * contactThickness)) / -2, (chipWidth / -2) + contactThickness, (chipHeight / 2) - contactThickness]){sphere(contactThickness - 0.002);}
            translate([(chipLength - (2 * contactThickness)) / -2, (chipWidth / -2) + contactThickness, (chipHeight / -2) + contactThickness]){sphere(contactThickness - 0.002);}
            translate([(chipLength - (2 * contactThickness)) / -2, (chipWidth / 2) - contactThickness, (chipHeight / 2) - contactThickness]){sphere(contactThickness - 0.002);}
            translate([(chipLength - (2 * contactThickness)) / -2, (chipWidth / 2) - contactThickness, (chipHeight / -2) + contactThickness]){sphere(contactThickness - 0.002);}
            // longtitudinal roundings
            translate([(chipLength - contactLength) / -2, (chipWidth / -2) + contactThickness, (chipHeight / 2) - contactThickness]){rotate([0,90,0]){cylinder(contactLength - (2 * contactThickness), contactThickness - 0.001, contactThickness - 0.001, true);}}
            translate([(chipLength - contactLength) / -2, (chipWidth / -2) + contactThickness, (chipHeight / -2) + contactThickness]){rotate([0,90,0]){cylinder(contactLength - (2 * contactThickness), contactThickness - 0.001, contactThickness - 0.001, true);}}
            translate([(chipLength - contactLength) / -2, (chipWidth / 2) - contactThickness, (chipHeight / 2) - contactThickness]){rotate([0,90,0]){cylinder(contactLength - (2 * contactThickness), contactThickness - 0.001, contactThickness - 0.001, true);}}
            translate([(chipLength - contactLength) / -2, (chipWidth / 2) - contactThickness, (chipHeight / -2) + contactThickness]){rotate([0,90,0]){cylinder(contactLength - (2 * contactThickness), contactThickness - 0.001, contactThickness - 0.001, true);}}
            // inner Y- rounding
            translate([(chipLength - (2 * contactLength) + (2 * contactThickness)) / -2, (chipWidth / -2) + contactThickness, 0]){cylinder(chipHeight - (2 * contactThickness), contactThickness - 0.001, contactThickness - 0.001, true);}
            // inner Y+ rounding
            translate([(chipLength - (2 * contactLength) + (2 * contactThickness)) / -2, (chipWidth / 2) - contactThickness, 0]){cylinder(chipHeight - (2 * contactThickness), contactThickness - 0.001, contactThickness - 0.001, true);}
            // inner Z- rounding
            translate([(chipLength - (2 * contactLength) + (2 * contactThickness)) / -2, 0, (chipHeight / -2) + contactThickness]){rotate([90,0,0]){cylinder(chipWidth - (2 * contactThickness), contactThickness - 0.001, contactThickness - 0.001, true);}}
            // inner Z+ rounding
            translate([(chipLength - (2 * contactLength) + (2 * contactThickness)) / -2, 0, (chipHeight / 2) - contactThickness]){rotate([90,0,0]){cylinder(chipWidth - (2 * contactThickness), contactThickness - 0.001, contactThickness - 0.001, true);}}
            // outer corner balls
            translate([(chipLength - (2 * contactLength) + (2 * contactThickness)) / -2, (chipWidth / -2) + contactThickness, (chipHeight / 2) - contactThickness]){sphere(contactThickness - 0.002);}
            translate([(chipLength - (2 * contactLength) + (2 * contactThickness)) / -2, (chipWidth / -2) + contactThickness, (chipHeight / -2) + contactThickness]){sphere(contactThickness - 0.002);}
            translate([(chipLength - (2 * contactLength) + (2 * contactThickness)) / -2, (chipWidth / 2) - contactThickness, (chipHeight / 2) - contactThickness]){sphere(contactThickness - 0.002);}
            translate([(chipLength - (2 * contactLength) + (2 * contactThickness)) / -2, (chipWidth / 2) - contactThickness, (chipHeight / -2) + contactThickness]){sphere(contactThickness - 0.002);}
        }

$fs=0.01; // set minimum circle segment length so circles are round at small scale
translate([0, 0, chipHeight / 2]) // move chip up onto the surface
{
    union() // unionize everything so freecad craps itself a bit less
    {
        color([0.7, 0.7, 0.7]) // silver end caps
        {
            contactCap();
            mirror([1,0,0]){contactCap();}
        }
        color([0.6, 0.6, 0]) // body
        {
            cube([chipLength - (2 * contactLength) + (2 * contactThickness), chipWidth - contactThickness, chipHeight - contactThickness], center = true);
        }
    }
}