This is for the Tower of Power project. It's a 32" vertical 3" diameter tube with seven short 3" tubes sticking horizontally out of it. Each horizontal tube has a ring of LEDs (12V car headlight halo lights) that are connected to a MOSFET. An Arduino Leonardo's PWM pins are used to drive the MOSFETS. There is a switch that can be toggled up or down momentarily to change to the next or previous mode. Each time the mode is changed, the animation speed is changed as well. Large changes in animation speed are possible by cycling a few times in one direction through the modes. By Garrett Durland Jan 2016
