I received a Theremin kit and just assembled it. The unit constantly makes sound and the LEDs flicker. If I touch the antenna, it gets quiet but the LEDs glow steady. There is no information saying what the buttons are supposed to do. They seem to do nothing at all. I am very experienced at working on circuit boards and am sure it is assembled correctly. Very disappointed in the result, and the lack of information on how to interact with the unit. I was hoping to get several units and incorporate them into a project. With no help, that is probably not going to happen.