heltec-v3-3000mah.scad

battery_length = 67;
battery_width = 37;

board_length = 53;
board_width = 27.1;

wall_thickness = 1.6;
inner_height = 11;
floor_thickness = 1.2;
board_support_height=4;
board_support_width=1.75;

slot_width = 5;
port_width = 12;
port_height = 1;

top_height = inner_height + floor_thickness;
top_tolerance = 0.5;

screen_width = 26.5;
screen_height = 14.5;
screen_y_offset = 7.0;
screen_x_offset = 10;

button_spacing = 15.75;
button_depth = 1.3;
button_width = 6;
button_inset = 5;

// choose the part to print
bottom = false;
top = true;

$fn=24;

if (top) {
  difference() {
    translate([0,(battery_length+wall_thickness)/2,0]) {
      box(
          board_length+2*wall_thickness+2*top_tolerance,
          board_width+battery_length+wall_thickness+2*wall_thickness+2*top_tolerance,
          top_height);
    }
    // cut port
    translate([
        -(board_length+3*wall_thickness)/2-top_tolerance,
        0,
        floor_thickness]) {
      cube([wall_thickness*2, port_width, top_height], center=true);
    }

    // cut screen
    translate([
        (board_length+2*wall_thickness-screen_width)/2+top_tolerance-screen_x_offset,
        -(board_width+2*wall_thickness-screen_height)/2-top_tolerance+screen_y_offset,
        -(top_height)/2]) {
      cube([screen_width, screen_height, 2 * floor_thickness], center=true);
    }

    // cut buttons
    translate([
        -(board_length+2*wall_thickness)/2+top_tolerance+button_inset,
        (button_spacing)/2,
        -(top_height)/2]) {
      cylinder(d=button_width+1.5,h=2*floor_thickness, center=true);
    }
    translate([
        -(board_length+2*wall_thickness)/2+top_tolerance+button_inset,
        -(button_spacing)/2,
        -(top_height)/2]) {
      cylinder(d=button_width+1.5,h=2*floor_thickness, center=true);
    }

    // cut corners
    translate([
        (board_length+3*wall_thickness)/2+top_tolerance,
        -(board_width+3*wall_thickness)/2+10-top_tolerance,
        floor_thickness]) {
      cube([3,3,top_height+floor_thickness], center=true);
    }
    translate([
        (board_length+3*wall_thickness)/2-10+top_tolerance,
        -(board_width+3*wall_thickness)/2-top_tolerance,
        floor_thickness]) {
      cube([3,3,top_height+floor_thickness], center=true);
    }
    translate([
        -(board_length+3*wall_thickness)/2+10-top_tolerance,
        -(board_width+3*wall_thickness)/2-top_tolerance,
        floor_thickness]) {
      cube([3,3,top_height+floor_thickness], center=true);
    }


    translate([
        (board_length+3*wall_thickness)/2-10+top_tolerance,
        (board_width+3*wall_thickness)/2+battery_length+wall_thickness+top_tolerance,
        floor_thickness]) {
      cube([3,3,top_height+floor_thickness], center=true);
    }
    translate([
        (board_length+3*wall_thickness)/2+top_tolerance,
        (board_width+3*wall_thickness)/2+battery_length+wall_thickness+top_tolerance-10,
        floor_thickness]) {
      cube([3,3,top_height+floor_thickness], center=true);
    }

    translate([
        -(board_length+3*wall_thickness)/2+10-top_tolerance,
        (board_width+3*wall_thickness)/2+battery_length+wall_thickness+top_tolerance,
        floor_thickness]) {
      cube([3,3,top_height+floor_thickness], center=true);
    }
    translate([
        -(board_length+3*wall_thickness)/2-top_tolerance,
        (board_width+3*wall_thickness)/2+battery_length+wall_thickness-10+top_tolerance,
        floor_thickness]) {
      cube([3,3,top_height+floor_thickness], center=true);
    }
  }


  // buttons
  translate([
      -(board_length+2*wall_thickness)/2+top_tolerance+button_inset,
      (button_spacing)/2,
      -(top_height)/2]) {
    cylinder(d=button_width,h=floor_thickness, center=true);
    translate([0,-button_width/2,0]) {
      cube([2,2,floor_thickness], center=true);
    }
    translate([0,0,(button_depth+floor_thickness)/2]) {
      cylinder(d=button_width/2,h=floor_thickness+button_depth, center=true);
    }
  }
  translate([
      -(board_length+2*wall_thickness)/2+top_tolerance+button_inset,
      -(button_spacing)/2,
      -(top_height)/2]) {
    cylinder(d=button_width,h=floor_thickness, center=true);
    translate([0,button_width/2,0]) {
      cube([2,2,floor_thickness], center=true);
    }
    translate([0,0,(button_depth+floor_thickness)/2]) {
      cylinder(d=button_width/2,h=floor_thickness+button_depth, center=true);
    }
  }
}

if (bottom) {
  difference() {
    union() {
      // outer wall
      translate([0,(battery_length+wall_thickness)/2,0]) {
        box(
            board_length,
            board_width+battery_length+wall_thickness,
            inner_height);
      }

      // board box
      box(board_length, board_width, inner_height);

      // board support
      translate([
                0,
                (board_width-board_support_width)/2,
                -(inner_height-board_support_height-floor_thickness)/2]) {
        cube([board_length-2*slot_width, board_support_width,board_support_height], center=true);
      }
      translate([
                0,
                -(board_width-board_support_width)/2,
                -(inner_height-board_support_height-floor_thickness)/2]) {
        cube([board_length, board_support_width,board_support_height], center=true);
      }


      // battery box
      translate([(
                  board_length-battery_width)/2,
                (battery_length+board_width)/2+wall_thickness,
                0]) {
        box(battery_width, battery_length, inner_height);
      }
    }

    // cut wiring slots
    translate([
      (board_length-slot_width)/2,
      (board_width+wall_thickness)/2,
      floor_thickness]) {
    cube([
          slot_width,
          2*wall_thickness,
          inner_height+floor_thickness],
        center = true);
    }

    translate([
            -(board_length-slot_width)/2,
            (board_width+wall_thickness)/2,
              floor_thickness]) {
      cube([
            slot_width,
            2*wall_thickness,
            inner_height+floor_thickness],
          center = true);
    }

    // cut port
  translate([
            (board_length+wall_thickness)/2,
            0,
            floor_thickness+port_height+board_support_height]) {
  cube([wall_thickness*2, port_width, inner_height], center=true);
    }
  }
}

module box(inner_width, inner_length, inner_height) {
  difference() {
    cube([
          inner_width+2*wall_thickness,
          inner_length+2*wall_thickness,
          inner_height+floor_thickness],
         center = true);
    translate([0, 0, floor_thickness]) {
      cube([
            inner_width,
            inner_length,
            inner_height+floor_thickness],
           center = true);
    }
  }
}