USB controlled mini lava lamps

Step 4 Cut enclosure and perfboard

Figure out the layout of your project in it's enclosure. I used the ever-popular Altoids tin. Drill a hole in the back of the Altoids tin for the large on/off SPST switch, one in the front for the keyboard USB cable, and two holes in the sides for the USB lava lamp plugs. Cut keyhole slits with a dremel cut-off wheel or handsaw down to the front and side holes so the USB cables can fit in (see picture). Line holes with duct tape to prevent cutting of cables. Decide on the shape of your perfboard for your circuit and cut out that shape with a dremel tool. This is going to be a pretty tight fit . . .