// 100 will make printing smooth
$fn = 100;
+include <wheel-dimensions.scad>
use <qr.scad>
-qr_size = 54;
-qr_height = 2;
+module mounting_screw_flat() {
+ circle(0.9); }
-wall_width = 3;
-
-wheel_width = 6;
-wheel_radius = sqrt(2 * pow(qr_size / 2, 2)) + wall_width / 2;
-
-motor_shaft_radius = 3.7;
-motor_shaft_flat_width = 4.8;
-
-tread_radius = 2.5 / 2;
-
-module mounting_screw_flat(){
- square(2, center = true);}
-
-module motor_shaft_flat(radius, flat_width){
- intersection(){
+module motor_shaft_flat(radius, flat_width) {
+ intersection() {
circle(radius);
- square([flat_width, radius * 2], center = true);}}
+ square([flat_width, radius * 2], center = true); } }
module motor_shaft(radius,
flat_width,
- shaft_length){
- linear_extrude(height = shaft_length){
- motor_shaft_flat(radius, flat_width);}}
+ shaft_length) {
+ linear_extrude(height = shaft_length) {
+ motor_shaft_flat(radius, flat_width); } }
-module rim(radius, wall_width, wheel_width){
- linear_extrude(height = wheel_width){
- difference(){
+module rim(radius, wall_width, wheel_width) {
+ linear_extrude(height = wheel_width) {
+ difference() {
circle(radius);
- circle(radius - wall_width);}}}
+ circle(radius - wall_width); } } }
-module motor_shaft_holder_flat(radius, flat_width, wall_width){
- difference(){
+module motor_shaft_holder_flat(radius, flat_width, wall_width) {
+ difference() {
motor_shaft_flat(radius + wall_width,
flat_width + wall_width);
- motor_shaft_flat(radius, flat_width);}}
+ motor_shaft_flat(radius, flat_width); } }
-module motor_shaft_holder(radius, flat_width, wall_width, height){
- linear_extrude(height = height){
- motor_shaft_holder_flat(radius, flat_width, wall_width);}}
+module motor_shaft_holder(radius, flat_width, wall_width, height) {
+ linear_extrude(height = height) {
+ motor_shaft_holder_flat(radius, flat_width, wall_width); } }
-module tread(wheel_radius, tread_radius){
- rotate_extrude(convexity = 10){
- translate([wheel_radius, 0]){
- circle(tread_radius);}}}
+module tread(wheel_radius, tread_radius) {
+ rotate_extrude(convexity = 10) {
+ translate([wheel_radius, 0]) {
+ circle(tread_radius); } } }
module wheel_black(radius,
width,
shaft_radius,
shaft_flat_width,
wall_width,
- tread_radius){
- color("black"){
- difference(){
+ tread_radius) {
+ color("black") {
+ difference() {
rim(radius, wall_width, width);
- translate([0, 0, width / 2]){
- tread(radius, tread_radius);}}
- linear_extrude(height = qr_height){
- difference(){
+ translate([0, 0, width / 2]) {
+ tread(radius, tread_radius); } }
+ linear_extrude(height = qr_height) {
+ difference() {
qr_black_flat();
- mounting_screw_flat();}}
- translate([0, 0, qr_height]){
+ mounting_screw_flat(); } }
+ translate([0, 0, qr_height]) {
motor_shaft_holder(shaft_radius,
shaft_flat_width,
wall_width,
- width - qr_height);}}}
+ width - qr_height); } } }
-module wheel_white(){
- color("white"){
- linear_extrude(height = qr_height){
- difference(){
+module wheel_white() {
+ color("white") {
+ linear_extrude(height = qr_height) {
+ difference() {
qr_white_flat();
- mounting_screw_flat();}}}}
+ mounting_screw_flat(); } } } }
module wheel(radius,
width,
shaft_radius,
shaft_flat_width,
wall_width,
- tread_radius){
+ tread_radius) {
wheel_black(radius,
width,
shaft_radius,
shaft_flat_width,
wall_width,
tread_radius);
- wheel_white();}
+ wheel_white(); }
module wheel_solid(radius,
width,
shaft_radius,
shaft_flat_width,
wall_width,
- tread_radius){
- difference(){
- rim(radius, wall_width, width);
- translate([0, 0, width / 2]){
- tread(radius, tread_radius);}}
- qr_size = 54;
- qr_height = 2;
- linear_extrude(height = qr_height){
- difference (){
+ tread_radius) {
+ difference() {
+ rim(radius, wall_width * 2, width);
+ translate([0, 0, width / 2]) {
+ tread(radius, tread_radius); } }
+ linear_extrude(height = qr_height) {
+ difference() {
square(qr_size, center = true);
- square(1.5, center = true);}}
- translate([0, 0, qr_height]){
+ mounting_screw_flat(); } }
+ translate([0, 0, qr_height]) {
motor_shaft_holder(shaft_radius,
shaft_flat_width,
wall_width,
- width - qr_height);}}
+ width - qr_height); } }
/*
wheel(wheel_radius,