use<Write.scad>
$fn=100;

x_size = 20;           // horizontal outer size of the aquarium pedestal. 
y_size = 20;           // 
mount_hole = 3.5;
nut_size = 6.8;
SMA_dia = 7.1;
thickness = 10;         //
wall_thickness = 3;
height = 55;

mount_hole = 3.7;
clear = 0.175;

MLAB_grid = 10.16;

x_holes = floor(x_size / MLAB_grid);
y_holes = floor(y_size / MLAB_grid);

MLAB_grid_xoffset = (x_size - (x_holes * MLAB_grid))/2;
MLAB_grid_yoffset = (y_size - (y_holes * MLAB_grid))/2;

//Top part

union () {

    difference () {
                cube([x_size, y_size , thickness ]);

// MLAB grid holes
        grid_list = [for (j = [MLAB_grid_xoffset : MLAB_grid: x_size], i = [MLAB_grid_yoffset :MLAB_grid: y_size])  [j, i] ];
            
        for (j = grid_list) {
                translate (concat(j, [0]))
                cylinder (h = 3, r= nut_size/2, $fn=6);
                translate (concat(j, [3.2]))  // one solid layer for slicer (the holes will be pierced on demand )
                cylinder (h = thickness /3, r= mount_hole/2, $fn=30);
                translate (concat(j, [6.0]))
                cylinder (h = 10, r= nut_size/2, $fn=6);
        }  
    };    

    difference  () {

        translate ([0, -wall_thickness, 0])    
            cube([y_size, wall_thickness , height ]);

        translate ([ x_size/2, wall_thickness/2, (height - thickness)/3  + thickness - SMA_dia/2])    
            rotate([90,0,0]) {
                translate([ 0, -11, wall_thickness/2 + wall_thickness ]) 
                    rotate([0,0,180])
                        write("GPS",h=5,t=2,space= 1.1, font = "Letters.dxf", center=true);
                difference  () {
                    cylinder (h = 2*wall_thickness, r= SMA_dia/2, $fn=50);
                        translate([ 0, -SMA_dia/2 , wall_thickness/2 + wall_thickness ]) 
                            cube([SMA_dia, 1 , thickness ], center=true);
                }
            }

        translate ([ x_size/2, wall_thickness/2, 2*(height - thickness)/3  + thickness  + SMA_dia/2 ])    
            rotate([90,0,0]){
                translate([ 0, -11, wall_thickness/2 + wall_thickness]) 
                    rotate([0,0,180])
                        write("ANT",h=5,t=2, space= 1.1, font = "Letters.dxf",center=true);
                difference  () {
                    cylinder (h = 2*wall_thickness, r= SMA_dia/2, $fn=50);
                        translate([ 0, -SMA_dia/2 , wall_thickness/2 + wall_thickness ]) 
                            cube([SMA_dia, 1 , thickness ], center=true);
                }
            }
    }
}