- /*
- 【Arduino】108種傳感器模塊系列實驗（資料+代碼+圖形+仿真）
- 實驗一百零五：12位 WS2812 5050 RGB LED 智能全彩RGB環開發板大環
- 1、安裝庫：IDE-工具-管理庫-搜索Adafruit_NeoPixel-安裝
- 2、項目：燈環顯示彩色
- 3、接腳：
- VCC → 5V
- GND → GND
- DI 接 D7
- */
- #include <Adafruit_NeoPixel.h>
- #ifdef __AVR__
- #include <avr/power.h>
- #endif
- #define PIN 7
- // Parameter 1 = number of pixels in strip
- // Parameter 2 = Arduino pin number (most are valid)
- // Parameter 3 = pixel type flags, add together as needed:
- // NEO_KHZ800 800 KHz bitstream (most NeoPixel products w/WS2812 LEDs)
- // NEO_KHZ400 400 KHz (classic 'v1' (not v2) FLORA pixels, WS2811 drivers)
- // NEO_GRB Pixels are wired for GRB bitstream (most NeoPixel products)
- // NEO_RGB Pixels are wired for RGB bitstream (v1 FLORA pixels, not v2)
- // NEO_RGBW Pixels are wired for RGBW bitstream (NeoPixel RGBW products)
- Adafruit_NeoPixel strip = Adafruit_NeoPixel(64, PIN, NEO_GRB + NEO_KHZ800);
- // IMPORTANT: To reduce NeoPixel burnout risk, add 1000 uF capacitor across
- // pixel power leads, add 300 - 500 Ohm resistor on first pixel's data input
- // and minimize distance between Arduino and first pixel. Avoid connecting
- // on a live circuit...if you must, connect GND first.
- void setup() {
- // This is for Trinket 5V 16MHz, you can remove these three lines if you are not using a Trinket
- #if defined (__AVR_ATtiny85__)
- if (F_CPU == 16000000) clock_prescale_set(clock_div_1);
- #endif
- // End of trinket special code
- strip.begin();
- strip.show(); // Initialize all pixels to 'off'
- }
- void loop() {
- // Some example procedures showing how to display to the pixels:
- //colorWipe(strip.Color(255, 0, 0), 50); // Red
- // colorWipe(strip.Color(0, 255, 0), 50); // Green
- //colorWipe(strip.Color(0, 0, 255), 50); // Blue
- //colorWipe(strip.Color(0, 0, 0, 255), 50); // White RGBW
- // Send a theater pixel chase in...
- // theaterChase(strip.Color(127, 127, 127), 50); // White
- //theaterChase(strip.Color(127, 0, 0), 50); // Red
- //theaterChase(strip.Color(0, 0, 127), 50); // Blue
- rainbow(20);
- //rainbowCycle(20);
- //theaterChaseRainbow(50);
- }
- // Fill the dots one after the other with a color
- void colorWipe(uint32_t c, uint8_t wait) {
- for(uint16_t i=0; i<strip.numPixels(); i++) {
- strip.setPixelColor(i, c);
- strip.show();
- delay(wait);
- }
- }
- void rainbow(uint8_t wait) {
- uint16_t i, j;
- for(j=0; j<256; j++) {
- for(i=0; i<strip.numPixels(); i++) {
- strip.setPixelColor(i, Wheel((i+j) & 255));
- }
- strip.show();
- delay(wait);
- }
- }
- // Slightly different, this makes the rainbow equally distributed throughout
- void rainbowCycle(uint8_t wait) {
- uint16_t i, j;
- for(j=0; j<256*5; j++) { // 5 cycles of all colors on wheel
- for(i=0; i< strip.numPixels(); i++) {
- strip.setPixelColor(i, Wheel(((i * 256 / strip.numPixels()) + j) & 255));
- }
- strip.show();
- delay(wait);
- }
- }
- //Theatre-style crawling lights.
- void theaterChase(uint32_t c, uint8_t wait) {
- for (int j=0; j<10; j++) { //do 10 cycles of chasing
- for (int q=0; q < 3; q++) {
- for (uint16_t i=0; i < strip.numPixels(); i=i+3) {
- strip.setPixelColor(i+q, c); //turn every third pixel on
- }
- strip.show();
- delay(wait);
- for (uint16_t i=0; i < strip.numPixels(); i=i+3) {
- strip.setPixelColor(i+q, 0); //turn every third pixel off
- }
- }
- }
- }
- //Theatre-style crawling lights with rainbow effect
- void theaterChaseRainbow(uint8_t wait) {
- for (int j=0; j < 256; j++) { // cycle all 256 colors in the wheel
- for (int q=0; q < 3; q++) {
- for (uint16_t i=0; i < strip.numPixels(); i=i+3) {
- strip.setPixelColor(i+q, Wheel( (i+j) % 255)); //turn every third pixel on
- }
- strip.show();
- delay(wait);
- for (uint16_t i=0; i < strip.numPixels(); i=i+3) {
- strip.setPixelColor(i+q, 0); //turn every third pixel off
- }
- }
- }
- }
- // Input a value 0 to 255 to get a color value.
- // The colours are a transition r - g - b - back to r.
- uint32_t Wheel(byte WheelPos) {
- WheelPos = 255 - WheelPos;
- if(WheelPos < 85) {
- return strip.Color(255 - WheelPos * 3, 0, WheelPos * 3);
- }
- if(WheelPos < 170) {
- WheelPos -= 85;
- return strip.Color(0, WheelPos * 3, 255 - WheelPos * 3);
- }
- WheelPos -= 170;
- return strip.Color(WheelPos * 3, 255 - WheelPos * 3, 0);
- }
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