I bought a string of LED color changing christmas lights. I pulled open one of the bulbs and the driver is not marked at all. It is a 14 pin surface mount IC with a "line in 1" on pin 11, "line in 2" on pin 10, "line out 1" on pin 3 and "line out 2" on pin 4.
There are 4 wires from each bulb, +V, GND, L1 and L2.
The driver controls 3 separate LED's by completing the ground.
Sorry I'm new to this, so the terminology might be off.
I also looked at the controller and there is no markings on the board or IC that controls the lights. When I power up the string from my arduino 5V i get a random array of colors (leaving "L1" and "L2" disconnected).
Not sure where else to start in determining the communication protocol or some library I "might" be able to use to control them.