Vertical Bubble Machine

This vertical bubble machine blows bubbles not horizontally, but upwards. I needed this for a project: a witch cauldron from which bubbles emerge, glowing in the dark by having UV-A LEDs at the edge of the cauldron and using a UV bubble fluid.

Normal bubble machines have to blow bubbles in a horizontal or nearly horizontal direction, because the bubble wheel has to be oriented horizontally, with the lower part in a tank of bubble fluid. I had different ideas to overcome this problem, and in the end took a "ferris wheel" like approach.

For building this, you'll need a small 5V geared motor and a 12V pc fan (I used a rather strong one and ran it on the same 5V as the geared motor that's turning the wheel). Just place the bubble machine into a tray containing the bubble fluid.

You'll find detailled instructions to building this in my "Magic Cauldron" instructable here: http://www.instructables.com/id/Magic-Cauldron-Blowing-Glowing-Bubbles/. See for yourself which of the connecti