I was really hoping I found a new winner. A 300 LED 3m x 3m fairy light curtain. It had 3 wires and the included video clearly showed they were addressable. The attached USB controller looks identical to the ones that come with the fixed address fairy lights so I was really hoping I’d have a 30x10 matrix for under $30.
But when I took apart the controller, the pins are just labeled 1, 2, 3. I cut it off and attach a JST assuming the pins will be the same as the fixed address lights. They turn on all blue, no control. I figure maybe data and ground are swapped. Now they are all aqua, still no control.
I solder on a JST to the original controller and hook it back up. I haven’t broken it. I did notice the controller emits a highly pitched buzz that changes pitch depending on color. Now I need to put it on the oscilloscope and figure out what is going on. Except I don’t have one and never used one.