added example of converted lesson

docs/maker/sound-machine.md

@@ -0,0 +1,12 @@
+# Sound Machine
+
+This example program combined with the small model will make a beat and rhythm on any surface when the program is run.
+
+```blocks
+loops.forever(function () {
+    output.motorA.on(50)
+    loops.pause(200)
+    output.motorA.on(100)
+    loops.pause(200)
+})
+```