// License: CC0
//
// Version 0.1.2
//

// units in mm


$fn = 50;

M3_H3_DRILL_R = 4.3127/2;

RFID_screw_diam = 3;
RFID_screw_dw = 103.5;
RFID_access_diam = 15.5;

MAG_PCB_screw_dw = 81.5;
MAG_PCB_screw_diam = 2;

MAG_READER_screw_dw = 93.75;
MAG_READER_screw_diam = 3;

MAG_ACCESS_total_width = 25;
//MAG_ACCESS_small_width = 10;
MAG_ACCESS_small_width = 7;
MAG_ACCESS_total_height = 95;
MAG_ACCESS_section = [17,24,18,24,17];

SCREEN_screw_diam = 3;
SCREEN_dw = 177;
SCREEN_dh = 54;

SCREEN_WINDOW_h = 46;
SCREEN_WINDOW_w = 160;

BOARD_screw_diam = 3;
BOARD_screw_dh = 76.25;
BOARD_screw_dw = 101.5;

BOARD_mount_screw_dw = 175;
BOARD_mount_screw_dh = 70;
BOARD_mount_screw_diam = 3;

// ...
//PIU_width = 190;
//PIU_height = 160;
//PIU_side = 50;

RAM_mount_pos_x = 0;
RAM_mount_pos_y = 30;
RAM_mount_dw = 3*25.4;
RAM_mount_dh = (1 + 5/8)*25.4;
RAM_mount_screw_diam = (1/4)*25.4;
   

PIU_width = 200;
PIU_height = 165;
PIU_side = 70;

_base_platform_width = 2*PIU_width/3;
_base_platform_height = 2*PIU_height/5;

USE_MOUNT_BRACKET = true;
mount_bracket_dh = 40;
mount_bracket_r = 5/2;
mount_bracket_y =  -PIU_height/2 + BOARD_mount_screw_dh/2 + 15;
mount_bracket_x = BOARD_mount_screw_dw/2;

module PIU_board_plate_simple() {
  _cr = 5;
  _cdx = BOARD_screw_dh + 10;
  _cdy = BOARD_screw_dw + 10;
  difference() {
    hull() {
      translate([-_cdx/2, -_cdy/2]) circle(_cr);
      translate([ _cdx/2, -_cdy/2]) circle(_cr);
      translate([ _cdx/2,  _cdy/2]) circle(_cr);
      translate([-_cdx/2,  _cdy/2]) circle(_cr);
    }
    translate([-BOARD_screw_dh/2, -BOARD_screw_dw/2]) circle(BOARD_screw_diam/2);
    translate([ BOARD_screw_dh/2, -BOARD_screw_dw/2]) circle(BOARD_screw_diam/2);
    translate([ BOARD_screw_dh/2,  BOARD_screw_dw/2]) circle(BOARD_screw_diam/2);
    translate([-BOARD_screw_dh/2,  BOARD_screw_dw/2]) circle(BOARD_screw_diam/2);
  }
}

module PIU_board_plate() {
  _cr = 2;
  _cdx = BOARD_screw_dh + 10;
  _cdy = BOARD_screw_dw + 10;
  _w = 14;

  px = _base_platform_width;
  py = _base_platform_height;

  difference() {
    union() {
      hull() {

        translate([-px/2 -_w, -_cdy/2]) circle(_cr);
        translate([ px/2 +_w, -_cdy/2]) circle(_cr);
        translate([ px/2 +_w,  _cdy/2]) circle(_cr);
        translate([-px/2 -_w,  _cdy/2]) circle(_cr);
      }
    }

    hull() {
      translate([-_cdx/2 + _w, -_cdy/2 + _w]) circle(_cr);
      translate([ _cdx/2 - _w, -_cdy/2 + _w]) circle(_cr);
      translate([ _cdx/2 - _w,  _cdy/2 - _w]) circle(_cr);
      translate([-_cdx/2 + _w,  _cdy/2 - _w]) circle(_cr);
    }
    translate([-BOARD_screw_dh/2, -BOARD_screw_dw/2]) circle(BOARD_screw_diam/2);
    translate([ BOARD_screw_dh/2, -BOARD_screw_dw/2]) circle(BOARD_screw_diam/2);
    translate([ BOARD_screw_dh/2,  BOARD_screw_dw/2]) circle(BOARD_screw_diam/2);
    translate([-BOARD_screw_dh/2,  BOARD_screw_dw/2]) circle(BOARD_screw_diam/2);

    translate([-px/2, py/2]) circle(M3_H3_DRILL_R);
    translate([-px/2,-py/2]) circle(M3_H3_DRILL_R);
    translate([-px/2, 0]) circle(M3_H3_DRILL_R);


    translate([ px/2, py/2]) circle(M3_H3_DRILL_R);
    translate([ px/2,-py/2]) circle(M3_H3_DRILL_R);
    translate([ px/2, 0]) circle(M3_H3_DRILL_R);

  }
}

module PIU_board_support_base() {
  _cr = 8;
  //px = 2*PIU_width/3;
  //py = 2*PIU_height/5;
  px = _base_platform_width;
  py = _base_platform_height;
  difference() {
    union() {
      hull() {
        translate([-px/2,  py/2]) circle(_cr);
        translate([-px/2, -py/2]) circle(_cr);
      }

      hull() {
        translate([ px/2, py/2]) circle(_cr);
        translate([ px/2,-py/2]) circle(_cr);
      }

      hull() {
        translate([ -px/2, 0]) circle(_cr);
        translate([  px/2, 0]) circle(_cr);
      }
    }

    translate([-px/2, 0]) circle(M3_H3_DRILL_R);
    translate([-px/2, py/2]) circle(M3_H3_DRILL_R);
    translate([-px/2,-py/2]) circle(M3_H3_DRILL_R);

    translate([ px/2, 0]) circle(M3_H3_DRILL_R);
    translate([ px/2, py/2]) circle(M3_H3_DRILL_R);
    translate([ px/2,-py/2]) circle(M3_H3_DRILL_R);
  }
}

module PIU_face() {
ang = 10;
  difference() {

    // central face
    //
    square([PIU_width, PIU_height], center=true);

    // screen
    //
    translate([0, PIU_height/2 - SCREEN_WINDOW_h/2 - 10])
    union() {
      square([SCREEN_WINDOW_w, SCREEN_WINDOW_h], center=true);
      translate([-SCREEN_dw/2, SCREEN_dh/2]) circle(SCREEN_screw_diam/2);
      translate([ SCREEN_dw/2, SCREEN_dh/2]) circle(SCREEN_screw_diam/2);
      translate([ SCREEN_dw/2,-SCREEN_dh/2]) circle(SCREEN_screw_diam/2);
      translate([-SCREEN_dw/2,-SCREEN_dh/2]) circle(SCREEN_screw_diam/2);
    }

    // mag
    //
    //translate([-40, -5])
    translate([0, -5])
    union() {
      square([MAG_ACCESS_total_height, MAG_ACCESS_small_width], center=true);
      translate([-MAG_ACCESS_section[1]/2 - MAG_ACCESS_section[2]/2, 0])
        square([MAG_ACCESS_section[1], MAG_ACCESS_total_width], center=true);
      translate([ MAG_ACCESS_section[3]/2 + MAG_ACCESS_section[2]/2, 0])
        square([MAG_ACCESS_section[3], MAG_ACCESS_total_width], center=true);
      rotate( ang, [0,0,1]) translate([-MAG_PCB_screw_dw/2, 0]) circle(MAG_PCB_screw_diam/2);
      rotate( ang, [0,0,1]) translate([ MAG_PCB_screw_dw/2, 0]) circle(MAG_PCB_screw_diam/2);
      rotate(-ang, [0,0,1]) translate([-MAG_PCB_screw_dw/2, 0]) circle(MAG_PCB_screw_diam/2);
      rotate(-ang, [0,0,1]) translate([ MAG_PCB_screw_dw/2, 0]) circle(MAG_PCB_screw_diam/2);

      rotate( ang, [0,0,1]) translate([-MAG_READER_screw_dw/2, 0]) circle(MAG_READER_screw_diam/2);
      rotate( ang, [0,0,1]) translate([ MAG_READER_screw_dw/2, 0]) circle(MAG_READER_screw_diam/2);
      rotate(-ang, [0,0,1]) translate([-MAG_READER_screw_dw/2, 0]) circle(MAG_READER_screw_diam/2);
      rotate(-ang, [0,0,1]) translate([ MAG_READER_screw_dw/2, 0]) circle(MAG_READER_screw_diam/2);
    }

    // RFID
    //
    //translate([-30,-55])
    translate([0,-55])
    union() {
      translate([-RFID_screw_dw/2,0]) circle(RFID_screw_diam/2);
      translate([ RFID_screw_dw/2,0]) circle(RFID_screw_diam/2);
      circle(RFID_access_diam/2);
    }
    
    // Blue Board mounting bracket
    //
    translate([0, -PIU_height/2 + BOARD_mount_screw_dh/2 + 15])
    union() {
      translate([-BOARD_mount_screw_dw/2, BOARD_mount_screw_dh/2]) circle(BOARD_mount_screw_diam/2);
      translate([ BOARD_mount_screw_dw/2, BOARD_mount_screw_dh/2]) circle(BOARD_mount_screw_diam/2);
      translate([ BOARD_mount_screw_dw/2,-BOARD_mount_screw_dh/2]) circle(BOARD_mount_screw_diam/2);
      translate([-BOARD_mount_screw_dw/2,-BOARD_mount_screw_dh/2]) circle(BOARD_mount_screw_diam/2);
    }
    
    if (USE_MOUNT_BRACKET) {
      translate([ mount_bracket_x, mount_bracket_y+mount_bracket_dh/2]) circle(mount_bracket_r);
      translate([ mount_bracket_x, mount_bracket_y-mount_bracket_dh/2]) circle(mount_bracket_r);
      translate([-mount_bracket_x, mount_bracket_y+mount_bracket_dh/2]) circle(mount_bracket_r);
      translate([-mount_bracket_x, mount_bracket_y-mount_bracket_dh/2]) circle(mount_bracket_r);
    }
    
  }
}

module BOARD_mounting_plate() {
  //BOARD_screw_diam = 3;
  //BOARD_screw_dw = 76.25;
  //BOARD_screw_dh = 101.5;
  //BOARD_mount_screw_dw = 175;
  //BOARD_mount_screw_dh = 80;
  //BOARD_mount_screw_diam = 3;
  
  extra = BOARD_mount_screw_diam*4;
  
  difference() {
    dy = 5;
    union() {
      square([BOARD_mount_screw_dw+extra, BOARD_mount_screw_dh+extra], center=true);
      translate([0, dy])
        square([BOARD_screw_dw+extra, BOARD_screw_dh+extra], center=true);
    }
    
    translate([0,dy])
    union() {
      square([30,30], center=true);
      translate([-BOARD_screw_dw/2, BOARD_screw_dh/2]) circle(BOARD_screw_diam/2);
      translate([ BOARD_screw_dw/2, BOARD_screw_dh/2]) circle(BOARD_screw_diam/2);
      translate([-BOARD_screw_dw/2,-BOARD_screw_dh/2]) circle(BOARD_screw_diam/2);
      translate([ BOARD_screw_dw/2,-BOARD_screw_dh/2]) circle(BOARD_screw_diam/2);
    }
    
    
    union() {
      translate([-BOARD_mount_screw_dw/2, BOARD_mount_screw_dh/2]) circle(BOARD_mount_screw_diam/2);
      translate([ BOARD_mount_screw_dw/2, BOARD_mount_screw_dh/2]) circle(BOARD_mount_screw_diam/2);
      translate([ BOARD_mount_screw_dw/2,-BOARD_mount_screw_dh/2]) circle(BOARD_mount_screw_diam/2);
      translate([-BOARD_mount_screw_dw/2,-BOARD_mount_screw_dh/2]) circle(BOARD_mount_screw_diam/2);
    }
  }
}

module PIU() {
  _c = 1;
  union() {
    PIU_face();

    // side left and right
    //
    translate([_c + PIU_width/2 + PIU_side/2, 0])
      square([PIU_side, PIU_height], center=true);
    translate([-(_c + PIU_width/2 + PIU_side/2), 0])
      square([PIU_side, PIU_height], center=true);

    // top and bottom
    //
    translate([0, _c + PIU_height/2 + PIU_side/2])
      square([PIU_width, PIU_side], center=true);
    translate([0, -(_c + PIU_height/2 + PIU_side/2)])
      square([PIU_width, PIU_side], center=true);

    // connecting strips
    //
    translate([-PIU_width/2 - _c/2, 0]) square([_c+0.25, PIU_height], center=true);
    translate([ PIU_width/2 + _c/2, 0]) square([_c+0.25, PIU_height], center=true);
    translate([ 0, PIU_height/2 + _c/2]) square([PIU_width, _c+0.25], center=true);
    translate([ 0, -(PIU_height/2 + _c/2)]) square([PIU_width, _c+0.25], center=true);

  }
}

module PIU_back_bracket() {
  _w = 20;
  _dx = PIU_width/2 - _w/2;
  _dy = PIU_height/2 - _w/2;
  _drill_r = M3_H3_DRILL_R;
  difference() {
    square([PIU_width, PIU_height], center=true);
    square([PIU_width - 2*_w, PIU_height - 2*_w], center=true);

    translate([ -_dx, -_dy]) circle(_drill_r);
    translate([  _dx, -_dy]) circle(_drill_r);
    translate([  _dx,  _dy]) circle(_drill_r);
    translate([ -_dx,  _dy]) circle(_drill_r);

    translate([ -_dx,  0]) circle(_drill_r);
    translate([  _dx,  0]) circle(_drill_r);
    translate([  0,  _dy]) circle(_drill_r);
    translate([  0, -_dy]) circle(_drill_r);
  }
}


module PIU_back_panel() {
  difference() {

    // central face
    //
    square([PIU_width, PIU_height], center=true);
    
    translate([0,-30])
    circle(20);
    
    translate([RAM_mount_pos_x,RAM_mount_pos_y])
    union() {
      translate([-RAM_mount_dw/2, -RAM_mount_dh/2]) circle(RAM_mount_screw_diam/2);
      translate([ RAM_mount_dw/2, -RAM_mount_dh/2]) circle(RAM_mount_screw_diam/2);
      translate([-RAM_mount_dw/2,  RAM_mount_dh/2]) circle(RAM_mount_screw_diam/2);
      translate([ RAM_mount_dw/2,  RAM_mount_dh/2]) circle(RAM_mount_screw_diam/2);
    }

    if (USE_MOUNT_BRACKET) {
      translate([ mount_bracket_x, mount_bracket_y+mount_bracket_dh/2]) circle(mount_bracket_r);
      translate([ mount_bracket_x, mount_bracket_y-mount_bracket_dh/2]) circle(mount_bracket_r);
      translate([-mount_bracket_x, mount_bracket_y+mount_bracket_dh/2]) circle(mount_bracket_r);
      translate([-mount_bracket_x, mount_bracket_y-mount_bracket_dh/2]) circle(mount_bracket_r);
    }


  }
}

module all() {
  PIU();
  translate([0,240]) PIU_back_bracket();
  translate([0,240]) PIU_board_support_base();

  translate([0,-180]) PIU_board_plate();
  //translate([0,-300]) PIU_board_support_base();

  /*
  translate([220,-35]) rotate(0, [0,0,1]) PIU_board_plate();
  translate([-230,-35]) rotate(0, [0,0,1]) PIU_board_support_base();
  */
}


//all();
//PIU();

// calibration because svg export sucks
//
//square([100,100], center=true);

PIU_face();
translate([0,-160]) BOARD_mounting_plate();
translate([0,180]) PIU_back_panel();