#include <FastLED.h> #define LED_PIN_1 3 #define LED_PIN_2 6 #define LED_COUNT_1 53 #define LED_COUNT_2 7 #define BRIGHTNESS 255 #define LED_TYPE WS2812B #define COLOR_ORDER GRB CRGB leds_1[LED_COUNT_1]; CRGB leds_2[LED_COUNT_2]; void setup() { FastLED.addLeds<LED_TYPE, LED_PIN_1, COLOR_ORDER>(leds_1, LED_COUNT_1); FastLED.addLeds<LED_TYPE, LED_PIN_2, COLOR_ORDER>(leds_2, LED_COUNT_2); FastLED.setBrightness(BRIGHTNESS); } void loop() { int brightness_2 = 0; int fadeAmount = 5; for (int i = 0; i < 7680; i++) { int brightness_1 = (exp(sin(i / 50.0 * PI)) - 0.36787944) * 108.0; for (int j = 0; j < LED_COUNT_1; j++) { leds_1[j].setRGB(brightness_1, brightness_1, brightness_1); } FastLED.show(); delay(20); } }灯带颜色改为红色
时间: 2024-03-21 07:38:46 浏览: 21
要将灯带颜色改为红色,可以将以下代码中的 `brightness_1` 值改为红色的 RGB 值,比如 `(255, 0, 0)`,表示红色的亮度值为 255,绿色为 0,蓝色为 0。
```
int brightness_1 = (exp(sin(i / 50.0 * PI)) - 0.36787944) * 108.0;
for (int j = 0; j < LED_COUNT_1; j++) {
leds_1[j].setRGB(brightness_1, brightness_1, brightness_1);
}
```
修改后的代码如下:
```
int brightness_1 = (exp(sin(i / 50.0 * PI)) - 0.36787944) * 108.0;
for (int j = 0; j < LED_COUNT_1; j++) {
leds_1[j].setRGB(255, 0, 0); // 红色的 RGB 值为 (255, 0, 0)
}
```
相关问题
#include <FastLED.h> #define LED_PIN_1 3 #define LED_PIN_2 6 #define LED_COUNT_1 53 #define LED_COUNT_2 7 #define BRIGHTNESS 255 #define LED_TYPE WS2812B #define COLOR_ORDER GRB CRGB leds_1[LED_COUNT_1]; CRGB leds_2[LED_COUNT_2]; void setup() { FastLED.addLeds<LED_TYPE, LED_PIN_1, COLOR_ORDER>(leds_1, LED_COUNT_1); FastLED.addLeds<LED_TYPE, LED_PIN_2, COLOR_ORDER>(leds_2, LED_COUNT_2); FastLED.setBrightness(BRIGHTNESS); } void loop() { int brightness_2 = 0; int fadeAmount = 5; for (int i = 0; i < 7680; i++) { int brightness_1 = (exp(sin(i / 50.0 * PI)) - 0.36787944) * 108.0; for (int j = 0; j < LED_COUNT_1; j++) { leds_1[j].setRGB(0, brightness_1, 0); } FastLED.show(); delay(20); } }在呼吸灯之后增加一个效果,增加一个流水灯的效果
以下是增加流水灯效果的代码:
```
#include <FastLED.h>
#define LED_PIN_1 3
#define LED_PIN_2 6
#define LED_COUNT_1 53
#define LED_COUNT_2 7
#define BRIGHTNESS 255
#define LED_TYPE WS2812B
#define COLOR_ORDER GRB
CRGB leds_1[LED_COUNT_1];
CRGB leds_2[LED_COUNT_2];
void setup() {
FastLED.addLeds<LED_TYPE, LED_PIN_1, COLOR_ORDER>(leds_1, LED_COUNT_1);
FastLED.addLeds<LED_TYPE, LED_PIN_2, COLOR_ORDER>(leds_2, LED_COUNT_2);
FastLED.setBrightness(BRIGHTNESS);
}
void loop() {
int brightness_2 = 0;
int fadeAmount = 5;
for (int i = 0; i < 7680; i++) {
int brightness_1 = (exp(sin(i / 50.0 * PI)) - 0.36787944) * 108.0;
for (int j = 0; j < LED_COUNT_1; j++) {
leds_1[j].setRGB(0, brightness_1, 0);
}
// 流水灯效果
for (int j = 0; j < LED_COUNT_2; j++) {
leds_2[j] = CRGB::Black; // 先将所有LED设置为黑色
leds_2[((i/20)+j)%LED_COUNT_2] = CRGB::Red; // 设置流水灯的红色
}
FastLED.show();
delay(20);
}
}
```
在此代码中,增加了一个for循环来控制流水灯效果。在每个循环中,使用for循环来逐个设置LED的颜色。在每个流水灯的位置设置红色,其他LED设置为黑色。使用模运算和延迟来控制流水灯的速度和效果。
#include <FastLED.h> #define LED_PIN_1 3 #define LED_PIN_2 6 #define LED_COUNT_1 42 #define LED_COUNT_2 7 #define BRIGHTNESS 255 #define LED_TYPE WS2812B #define COLOR_ORDER GRB CRGB leds_1[LED_COUNT_1]; CRGB leds_2[LED_COUNT_2]; void setup() { FastLED.addLeds<LED_TYPE, LED_PIN_1, COLOR_ORDER>(leds_1, LED_COUNT_1); FastLED.addLeds<LED_TYPE, LED_PIN_2, COLOR_ORDER>(leds_2, LED_COUNT_2); FastLED.setBrightness(BRIGHTNESS); } void loop() { int brightness_2 = 0; int fadeAmount = 5; for (int i = 0; i < 7680; i++) { int brightness_1 = (exp(sin(i / 50.0 * PI)) - 0.36787944) * 108.0; for (int j = 0; j < LED_COUNT_1; j++) { leds_1[j].setRGB(brightness_1, brightness_1, brightness_1); } FastLED.show(); delay(20); } }让第二个LED灯带在第一个LED灯带呼吸的状态下同时慢慢亮起
可以尝试在循环中添加对第二个LED灯带的控制,使其跟随第一个灯带的呼吸状态,并且慢慢亮起。具体代码如下:
```
#include <FastLED.h>
#define LED_PIN_1 3
#define LED_PIN_2 6
#define LED_COUNT_1 42
#define LED_COUNT_2 7
#define BRIGHTNESS 255
#define LED_TYPE WS2812B
#define COLOR_ORDER GRB
CRGB leds_1[LED_COUNT_1];
CRGB leds_2[LED_COUNT_2];
void setup() {
FastLED.addLeds<LED_TYPE, LED_PIN_1, COLOR_ORDER>(leds_1, LED_COUNT_1);
FastLED.addLeds<LED_TYPE, LED_PIN_2, COLOR_ORDER>(leds_2, LED_COUNT_2);
FastLED.setBrightness(BRIGHTNESS);
}
void loop() {
int brightness_2 = 0;
int fadeAmount = 5;
for (int i = 0; i < 7680; i++) {
int brightness_1 = (exp(sin(i / 50.0 * PI)) - 0.36787944) * 108.0;
for (int j = 0; j < LED_COUNT_1; j++) {
leds_1[j].setRGB(brightness_1, brightness_1, brightness_1);
}
// 将第二个灯带的亮度设为第一个灯带的亮度
for (int k = 0; k < LED_COUNT_2; k++) {
leds_2[k].setRGB(brightness_1, brightness_1, brightness_1);
}
// 逐渐增加第二个灯带的亮度
if (brightness_2 < brightness_1) {
brightness_2 += fadeAmount;
if (brightness_2 > brightness_1) {
brightness_2 = brightness_1;
}
for (int k = 0; k < LED_COUNT_2; k++) {
leds_2[k].setRGB(brightness_2, brightness_2, brightness_2);
}
}
FastLED.show();
delay(20);
}
}
```
需要注意的是,这段代码中的呼吸效果是由第一个灯带控制的,第二个灯带只是跟随变化,如果需要更改呼吸效果,需要修改对第一个灯带的控制。
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