![]() ![]() In this example, specific noise-generation // values have been selected to match the given color palettes some are faster, // or slower, or larger, or smaller than others, but there's no reason these // parameters can't be freely mixed-and-matched. // Periodically, the color palette is changed, and new noise-generation parameters // are chosen at the same time. // // The basic setup here is that for each frame, we generate a new array of // 'noise' data, and then map it onto the LED matrix through a color palette. // You might want to look at the "ColorPalette" and "Noise" examples separately // if this example code seems daunting. This example combines FastLED's // color palette lookup functions with FastLED's Perlin/simplex noise generator, and // the combination is extremely powerful. #include #define LED_PIN 9 #define BRIGHTNESS 96 #define LED_TYPE WS2811 #define COLOR_ORDER GRB const uint8_t kMatrixWidth = 16 const uint8_t kMatrixHeight = 8 const bool kMatrixSerpentineLayout = false // This example combines two features of FastLED to produce a remarkable range of // effects from a relatively small amount of code. Here's the main sketch that we will use and it's called NoisePlusPalette which can be found in FASTLED Example Sketches. Here's its GitHub page and you first need to download and install the library in Arduino IDE. The FASTLED is a library used for controlling a wide variety of LED chipsets, like the ones sold by adafruit (Neopixel, DotStar, LPD8806), Sparkfun (WS2801), and aliexpress. To start with you need to include the libraries you want to use and set up the LED’s.For using this board, we can utilize a bunch of existing Libraries but we will focus on FASTLED LIBRARY for now. Once this is added we can start using the libraries features. This library can be added to the Arduino IDE by adding the “FastLED” library in the “Manage library” section of the Arduino IDE. This handles the complexity of the communication protocol and allows you to easily set the state of each LED. To program the WS2812B 8×8 LED Matrix Panel I am going to use the FastLED Arduino Library. Programming the Arduino with the WS2812B 8×8 LED Matrix Panel Here I will wire up the digital in pin to the Arduino’s digital pin three (with the noted resistor between it). ![]() This resistor helps to reduce noise on the line and the LED panel may work without this. The Data In (DIN) pin should ideally be connected to a resistor (of around 330 ohm) which is then connected to one of the digital pins on the Arduino. The 5V pin and GND pins are connected to the respective pins on the Arduino. ![]() This will let me connect it to a breadboard and then connect it to the Arduino. To wire up the WS2812B 8×8 LED Matrix Panel to an Arduino I am going to solder a 3 pin header onto the 5V, Data in, and GND pins. The LED’s are indexed numerically from the first LED (closest to the Data in port) to the last LED which is closest to the data out port. This LED square can be used with the FastLED Arduino Library which allows you to easily control them. These can also be chained together to control multiple in parallel however you need to ensure that the current requirements will be met by your microcontroller. This uses the standard WS2812B protocol to control the LED’s which only need a single data pin, 5V, and GND. ![]() These are the two sets for 5V and GND, a Digital In, and a Digital Out. There are six pin holes where you can solder pin headers or wires to. Each LED has its own LED driver which allows you to individually address and control each LED. The WS2812B 8×8 LED Matrix Panel is an square arrangement of 64 RGB LED’s. ![]()
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