Vermes
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This movable LED head can be easily done in your workshop. It is based on two drivers AVT395 with modification consisting of the fact that when there is no music, the head stands still. One driver is responsible for up-down head movement and the other – for right-left movement. Light is provided by 3W RGB diode and PWM driver with a remote. If you want, you can use 3 LEDs instead of that. The most important thing in this project is to provide voltage to the head and provide signal to the motor. Four circles need to be etched in the board. And, of course, you also have to add plates which move on the circles. Then voltage must pass from the arm to the movable head. It can be done using the two other plates and foil wrapped on a pen.
The construction can be made on very low costs. Base of the head is an easily available housing. The head itself was made of 2 computer speakers, and the arm is a cut housing of a power supply. In order to provide the appropriate ventilation, your device has to be equipped with two fans. One of them is responsible for cooling the transistors and LM317. The second one cools the diode and heat sink on which the transistors from current source are mounted. The device is supplied by 12V 2A power supply.
And a video:
Link to original thread - Ruchoma głowa LED DIY