LED pixel controller is a smart device which controls digital IC LED strip lights with SPI signal. Generally it accepts DMX signal input and converts it to SPI. The IC LED strip receives SPI signal that can control each pixel (RGB/RGB+W LED chip) individually from the controller.
Unlike normal LED tape, IC LED light is designed with driving IC (microcontroller) integrated. Each pixel has a driving IC. Thus it is a kind of smart light whereas the normal LED tape is a dumb light. There are many types of pixel light available with different types of IC. Once choosing a pixel controller, you have to figure out which type of IC your light uses and whether the controller supports this type of IC.
Generally with 512 DMX channels, a pixel controller is capable of addressing 170 RGB or 128 RGBW pixels individually. RGB requires 3 DMX channels to decode and RGBW requires 4. Meanwhile, all connected pixels can be controlled simultaneously with 3/4 channels. The number of pixels to be controlled can also be configurable. A DMX console is required to input signal to the LED controller. Generally the IC strip lights in the market are powered by 5VDC or 12-24VDC. So the controller shall be connected with a corresponding power supply.
Since each LED chip is addressable individually, complicated color sequences including chasing, changing, sequencing and static colors can be created by the SPI controller to meet the requirements of those projects who need unique sequences. For holiday seasons, it is great to use this controller to create stunning effects for your Christmas lights. There are two ways to create color sequences: first is the built-in sequences, second is sequences programmed by software and stored in DMX consoles.
Some SPI controllers can also accept RF/WiFi signal so that you can control them with a remote or smart phone. Under this mode, they convert RF/WiFi to SPI and all connected pixels will be controlled simultaneously. You just have to pair it to the remote or connect your smart phone WLAN with the controller network. Then it is controllable by the remote or APP installed on your phone.
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