add 3d logo model

logo/nixos.scad

@@ -0,0 +1,44 @@
+module hand(height, width, length) {
+	rotate(a=0) {
+	translate ([-width/4,-width/2,-height/2]) {
+		union () {
+			cube(size = [length,width,height]);
+			translate([length,width/2,0]) {
+				cylinder(h=height,r=width/2,$fn=20);
+			}
+			rotate(a=60) {
+				union () {
+					cube(size = [length+width/2,width,height]);
+					translate([length+width/2,width/2,0]) {
+						cylinder(h=height,r=width/2,$fn=20);
+					}
+				}
+			}
+		}
+	}
+	}
+}
+
+height=2.5;
+width=2.5;
+length=10;
+radius=15;
+hole=2;
+
+difference() {
+	rotate (a=90) {
+		union () {
+			cylinder(h=height,r=radius,$fn=6,center=true);
+			for (i = [0:6]) {
+				translate([cos(360*i/6)*radius,sin(360*i/6)*radius,0]) {
+					rotate(a=360*i/6) {
+						hand(height,width,length);
+					}
+				}
+			}
+		}
+	}
+	translate([0,radius*1/2,0]) {
+		cylinder(h=height+1, r=hole, center=true);
+	}
+}