WS2812B ESP32 micropython

WS2812B

 

ESP32 > WS2812B

3V3 > V+

 GND > V-

 D5 > IN

Матрица загорается красным , зеленым и синим.

main.py     

import machine
import neopixel
import time

# Number of LEDs in your chain:
NUM_LEDS = 64

# The pin you connect the data line to:
DATA_PIN = 5  # change to your pin

# Create the NeoPixel object
np = neopixel.NeoPixel(machine.Pin(DATA_PIN, machine.Pin.OUT), NUM_LEDS)

def clear():
    for i in range(NUM_LEDS):
        np[i] = (0, 0, 0)
    np.write()

def set_color_all(r, g, b):
    for i in range(NUM_LEDS):
        np[i] = (r, g, b)
    np.write()

def rainbow_cycle(delay_ms=20):
    # A simple rainbow effect
    for j in range(256):
        for i in range(NUM_LEDS):
            # wheel gives a color based on position
            idx = (i * 256 // NUM_LEDS + j) & 255
            np[i] = wheel(idx)
        np.write()
        time.sleep_ms(delay_ms)

def wheel(pos):
    """Generate colors across a 0-255 rainbow wheel."""
    if pos < 85:
        return (pos * 3, 255 - pos * 3, 0)
    elif pos < 170:
        pos -= 85
        return (255 - pos * 3, 0, pos * 3)
    else:
        pos -= 170
        return (0, pos * 3, 255 - pos * 3)

# Demo loop
clear()
time.sleep(1)
set_color_all(50, 0, 0)  # dim red
time.sleep(2)
set_color_all(0, 50, 0)  # dim green
time.sleep(2)
set_color_all(0, 0, 50)  # dim blue
time.sleep(2)
rainbow_cycle(10)


while True:
    rainbow_cycle(50)