1 files changed, 42 insertions, 0 deletions
diff --git a/lasttretrad.scad b/lasttretrad.scad
new file mode 100644
index 0000000..6c9e2d8
--- /dev/null
+++ b/lasttretrad.scad
@@ -0,0 +1,42 @@
+use <wheel.scad>;
+
+module frame() {
+    l=3000;
+    w=1000;
+    h=160;
+    translate([-l/2, -w/2, 0])
+    cube([l, w, h]);
+}
+
+// specify (f)ront/(c)enter/(b)ack as -1/0/1 and (l)eft/(r)ight as -1/1
+module wheel_position(fcb, lr) {
+    translate([1300 * fcb, 450 * lr, -250])
+    children();
+}
+
+// specify (f)ront/(b)ack and (l)eft/(r)ight as -1/1
+module steered_wheel(fb=-1, lr=-1, rot=0) {
+    rotate([90, 0, fb*rot])
+    wheel();
+}
+
+// specify (l)eft/(r)ight as -1/1
+module powered_wheel(lr=-1) {
+    rotate([90])
+    wheel();
+}
+
+module lasttretrad() {
+    frame();
+    
+    for (lr = [-1,1])
+    for (fb = [-1,1])
+    wheel_position(fb, lr)
+    steered_wheel(fb, lr, rot=30);
+    
+    for (lr = [-1,1])
+    wheel_position(0, lr)
+    powered_wheel(lr);
+}
+
+lasttretrad();