推荐一些聚拢流水灯的代码示例

聚拢流水灯通常指的是LED灯带效果，它是一种通过编程控制灯光逐个亮起、熄灭，形成流动动画的效果。这里提供一个简单的Python库`RPi.GPIO`和`threading`结合的示例，适用于Raspberry Pi平台：

import RPi.GPIO as GPIO
import time

# 假设灯带使用了16个GPIO Pin，从GPIO 17到GPIO 32
LED_PINS = [17, 18, 19, 21, 22, 23, 24, 25, 26, 27, 28, 29, 31, 32]

def light_up(pin):
    GPIO.output(pin, True)
    print(f"LED {pin} turned on")

def light_down(pin):
    GPIO.output(pin, False)
    print(f"LED {pin} turned off")

def ripple_effect():
    for i in LED_PINS:
        light_up(i)  # 先点亮
        time.sleep(0.1)  # 等待一段时间
        light_down(i)   # 再关闭

try:
    GPIO.setmode(GPIO.BCM)  # 使用BCM模式
    for pin in LED_PINS:
        GPIO.setup(pin, GPIO.OUT)  # 初始化为输出

    # 创建一个线程来运行流光效果
    thread = threading.Thread(target=ripple_effect)
    thread.start()

    # 主函数等待线程完成
    thread.join()
except KeyboardInterrupt:
    print("Caught keyboard interrupt, cleaning up...")
finally:
    GPIO.cleanup()  # 清理GPIO资源