$fn=20; //How detailed should the sphere/cyl-s be.

pillar_height = 10; //The height of the pillar in units.
pillar_size=1; //The width and depth of the pillar.
inset_size=0.5; //How much units should be removed of the inner side of the pillar?
   
HINGE_SCALE=0.8; //The inner width of the hinge.
   
screw_diameter=0.2; //The diameter in units of the screw hole.
   
hinge_width_outer=0.2; //The outer width of the hinge, where screws will be placed.
   
hinge_offset=0.4; //How far should the hinges be from the pillar

hinge_color="red";
pillar_color="gray";
scaffolding_color="white";

module rounded_cube(size = [1, 1, 1], center = false, radius = 0.02) { //Radii should be lesser than half of the min(size[0],size[1],size[2])!
    // If single value, convert to [x, y, z] vector
    size = (size[0] == undef) ? [size, size, size] : size;

    translate = (center == false) ?
        [radius, radius, radius] :
        [
            radius - (size[0] / 2),
            radius - (size[1] / 2),
            radius - (size[2] / 2)
    ];

    translate(v = translate)
    minkowski() {
        cube(size = [
            size[0] - (radius * 2),
            size[1] - (radius * 2),
            size[2] - (radius * 2)
        ]);
        sphere(r = radius);
    }
}

module cube_sat_pillar(rotation=0,size = [1, 1, 1], translation= [3,3,0]) {
    // If single value, convert to [x, y, z] vector
    size = (size[0] == undef) ? [size, size, size] : size;
    
    
    rotate(rotation){
        translate(translation){
            
            difference(){
                
                color(pillar_color){
                rounded_cube([pillar_size,pillar_size,pillar_height]);
                    }
                    
                translate([-inset_size,-inset_size,inset_size]){
                    cube([pillar_size,pillar_size,pillar_height-inset_size*2]);
                }
            
            }
            
            color(scaffolding_color){
            translate([-pillar_size,inset_size,0]){
                difference(){
                rounded_cube([pillar_size,pillar_size-inset_size,pillar_size*HINGE_SCALE]);
translate([inset_size,-inset_size/2,inset_size]){rotate([0,90,90]){translate([0,-screw_diameter*HINGE_SCALE,0]){
        cylinder(d=screw_diameter);
    }
    translate([0,screw_diameter*HINGE_SCALE,0]){
        cylinder(d=screw_diameter);
    }
    }
    }
                }
            }//END PIPE
            translate([-pillar_size,inset_size,pillar_height-pillar_size]){
                difference(){
                rounded_cube([pillar_size,pillar_size-inset_size,pillar_size*HINGE_SCALE]);
translate([inset_size,-inset_size/2,inset_size]){rotate([0,90,90]){translate([0,-screw_diameter*HINGE_SCALE,0]){
        cylinder(d=screw_diameter);
    }
    translate([0,screw_diameter*HINGE_SCALE,0]){
        cylinder(d=screw_diameter);
    }
    }
    }
                }
            }//END PIPE
            
            translate([inset_size,-pillar_size,0]){
                difference(){
                rounded_cube([pillar_size-inset_size,pillar_size,pillar_size*HINGE_SCALE]);
translate([inset_size*1.5,inset_size,inset_size]){rotate([0,90,180]){translate([0,-screw_diameter*HINGE_SCALE,0]){
        cylinder(d=screw_diameter);
    }
    translate([0,screw_diameter*HINGE_SCALE,0]){
        cylinder(d=screw_diameter);
    }
    }
    }
                }
            }//END PIPE
            
            translate([inset_size,-pillar_size,pillar_height-pillar_size]){
                difference(){
                rounded_cube([pillar_size-inset_size,pillar_size,pillar_size*HINGE_SCALE]);
translate([-inset_size/2.0,inset_size,inset_size]){rotate([0,90,0]){
    translate([0,-screw_diameter*HINGE_SCALE,0]){
        cylinder(d=screw_diameter);
    }
    translate([0,screw_diameter*HINGE_SCALE,0]){
        cylinder(d=screw_diameter);
    }
    }
    }
                }
            }//END PIPE
        }
            
            color(hinge_color){
            translate([inset_size+hinge_width_outer+hinge_offset,-pillar_size,pillar_height-pillar_size]){
                difference(){
            rounded_cube([hinge_width_outer,pillar_size,pillar_size*HINGE_SCALE]);
                translate([-inset_size/2.0,inset_size,inset_size]){rotate([0,90,0]){
    translate([0,-screw_diameter*HINGE_SCALE,0]){
        cylinder(d=screw_diameter);
    }
    translate([0,screw_diameter*HINGE_SCALE,0]){
        cylinder(d=screw_diameter);
    }
    }
    }
}
            } //END HINGE BOLT 1
            
            translate([inset_size+hinge_width_outer+hinge_offset,-translation[0]*2,pillar_height-pillar_size]){
                difference(){
            rounded_cube([hinge_width_outer,pillar_size,pillar_size*HINGE_SCALE]);
                translate([-inset_size/2.0,inset_size,inset_size]){rotate([0,90,0]){
    translate([0,-screw_diameter*HINGE_SCALE,0]){
        cylinder(d=screw_diameter);
    }
    translate([0,screw_diameter*HINGE_SCALE,0]){
        cylinder(d=screw_diameter);
    }
    }
    }
}
            } //END HINGE BOLT 2
            
            translate([inset_size+hinge_width_outer/1.5+hinge_offset,-translation[0]*2+pillar_size,pillar_height-pillar_size]){

            rounded_cube([hinge_width_outer,translation[0]*2-pillar_size*2,pillar_size*HINGE_SCALE]);
                
            } //END HINGE BODY
            
            translate([inset_size+hinge_width_outer+hinge_offset,-pillar_size,0]){
                difference(){
            rounded_cube([hinge_width_outer,pillar_size,pillar_size*HINGE_SCALE]);
                translate([-inset_size/2.0,inset_size,inset_size]){rotate([0,90,0]){
    translate([0,-screw_diameter*HINGE_SCALE,0]){
        cylinder(d=screw_diameter);
    }
    translate([0,screw_diameter*HINGE_SCALE,0]){
        cylinder(d=screw_diameter);
    }
    }
    }
}
            } //END HINGE BOLT 1
            
            translate([inset_size+hinge_width_outer+hinge_offset,-translation[0]*2,0]){
                difference(){
            rounded_cube([hinge_width_outer,pillar_size,pillar_size*HINGE_SCALE]);
                translate([-inset_size/2.0,inset_size,inset_size]){rotate([0,90,0]){
    translate([0,-screw_diameter*HINGE_SCALE,0]){
        cylinder(d=screw_diameter);
    }
    translate([0,screw_diameter*HINGE_SCALE,0]){
        cylinder(d=screw_diameter);
    }
    }
    }
}
            } //END HINGE BOLT 2
            
            
            translate([inset_size+hinge_width_outer/1.5+hinge_offset,-translation[0]*2+pillar_size,0]){

            rounded_cube([hinge_width_outer,translation[0]*2-pillar_size*2,pillar_size*HINGE_SCALE]);
                
            } //END HINGE BODY

        }
    }

    }
}

//EXAMPLE USAGE
cube_sat_pillar(0);
cube_sat_pillar(90);
cube_sat_pillar(180);
cube_sat_pillar(270);