OpenSCAD 1602 LCD with i2C

Here’s another model in my project. It’s a 2-row 16 character per row LCD screen with an i2c interface module attached. I’ll be using this to display whatever I want on my portable project.

Here’s the code. One file for each board, and the LCD board imports the i2c board’s module function:

//Dr.Gerg's i2c interface board
// for 1602A-4 16x2 and 2004 20x4 LCD modules
// OpenSCAD definition file
// https://www.drgerg.com


module hw061(){
    pcb = [18.85,41.72,1.56];
    module pin(tx,ty,tz,ry,cl,cx,cy){
        translate([tx,ty,tz])
        rotate([0,ry,0])
        cube([cl,cx,cy],false);
    }

    $fn=48;
    difference(){
    color("gray")
    cube(pcb);
    translate([1.64,1.64,-.5])
    rotate([0,0,90])
    for (i=[0:15])
        pin(i*2.54,0,0,270,3,.64,.64);
    translate([6.98,1.64,-.5])
    rotate([0,0,0])
    for (i=[0:1])
        pin(i*2.54,0,0,270,3,.64,.64);
    translate([5.55,pcb.y-1.64,-.5])
    rotate([0,0,0])
    for (i=[0:3])
        pin(i*2.54,0,0,270,3,.64,.64);
    }
    color("lightblue")
    translate([4.27,27.14,pcb.z])
    cube([6.75,6.75,5.15]);
    color("black")
    translate([4.27,15.88,pcb.z])
    cube([10.4,7.4,2]);
}
hw061();
//Dr.Gerg's 1602A-4 16x2 LCD module
//
// OpenSCAD definition file
// https://www.drgerg.com

use <hw-061 i2c LCD module.scad>;
holespcx = 33.86;
holespcy = 77.9;
mntholedia = 2.7;
pcb1 = [36,80,1.13];
lcd = [24.40,69.28,6.57];
lscrn = [16.28,65.19,1]; // lcd screen
lsc = [1,0.1,0];                    // lcd screen corner
LEDpoly = [[2.625,0],[15.125,0],[17.75,3.25],[17.75,5.35],[0,5.35],[0,3.25]];
module pin(tx,ty,tz,ry,cl,cx,cy){
    translate([tx,ty,tz])
    rotate([0,ry,0])
    cube([cl,cx,cy],false);
    translate([-2,-1,5])
    color("black")
    cube([40.5,2.54,2.54],false);
}
module screen(){
    minkowski(){
        cube([lscrn.x - lsc.x*2,lscrn.y - lsc.x*2,lscrn.z]);
        cylinder(r=lsc[0],h=lsc[1]);
    }
}
module light(){
    linear_extrude(3)
    polygon(LEDpoly);
    }
$fn=48;
difference(){
color("green")
cube(pcb1);
translate([(pcb1.x/2)-((holespcx-mntholedia)/2),(pcb1.y/2)-((holespcy-mntholedia)/2),0])
cylinder(h=6,d=mntholedia,center=true);
translate([(pcb1.x/2)+((holespcx-mntholedia)/2),(pcb1.y/2)-((holespcy-mntholedia)/2),0])
cylinder(h=6,d=mntholedia,center=true);
translate([(pcb1.x/2)-((holespcx-mntholedia)/2),(pcb1.y/2)+((holespcy-mntholedia)/2),0])
cylinder(h=6,d=mntholedia,center=true);
translate([(pcb1.x/2)+((holespcx-mntholedia)/2),(pcb1.y/2)+((holespcy-mntholedia)/2),0])
cylinder(h=6,d=mntholedia,center=true);
};
translate([pcb1.x/2 - 17.25/2,0,pcb1.z])
color("white")
light();
difference(){
    color("black")
    translate([pcb1.x/2 - lcd.x/2,pcb1.y/2 - lcd.y/2,pcb1.z])
    cube(lcd);
    color("blue")
    translate([pcb1.x/2 - lscrn.x/2 +lsc.x,pcb1.y/2 - lscrn.y/2 + lsc.x,lcd.z-lscrn.z+1.1])
    screen();
}
translate([33.3,33.9875,-7.7])
rotate([0,0,90])
for (i=[0:15])
    pin(i*2.54,0,0,270,12,.64,.64);
translate([34.3,32.4,-3])
rotate([0,180,0])
hw061();

Once I get all the models done, and the project is complete, I’ll reorganize all of these associated files into one group.

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