After receiving several requests, I reworked my LED ring project. I simplified the circuitry and rewrote the software from scratch. The result is a LED ring that may be controlled by Breeze or DSLRBooth via USB.
The project is currently in prototype status.
In addition, I wrote a Windows application that can be integrated in most photo booth software packages. You may also control the LED ring straight through the virtual COM connection via USB.
The application reacts on command line parameters (like status screen file names) and sends the command configured for the calling parameter. The controller is able to display a set of predefined effects. Parameters can be used to tailor the effects in direction, speed or color.
Among the effects are a runnign rainbow, countdown status displays, blinking, solid color or swiping a couple of LEDs round the ring.