... LED Pixel Lamp(with IC) can be connected.2, please take the side of lamp with black IC as signal ... connect controller.3, when pull out the SD card, please make sure that the power supply was turned off, or it ... pixel lamps can connect to power supply directly, to make sure that the lamps will get enough and uniform ... Pixel Light:Connect to LED Digital Tube:Projects: 5V/7.5V~24V SD Card LED RGB Controller