pimoroni-pico/micropython/examples/plasma_stick/rainbows.py

37 lines
695 B
Python

import plasma
from plasma import plasma_stick
import time
"""
Make some rainbows!
"""
# Set how many LEDs you have
NUM_LEDS = 50
# The SPEED that the LEDs cycle at (1 - 255)
SPEED = 20
# How many times the LEDs will be updated per second
UPDATES = 60
# WS2812 / NeoPixel™ LEDs
led_strip = plasma.WS2812(NUM_LEDS, 0, 0, plasma_stick.DAT, color_order=plasma.COLOR_ORDER_RGB)
# Start updating the LED strip
led_strip.start()
offset = 0.0
# Make rainbows
while True:
SPEED = min(255, max(1, SPEED))
offset += float(SPEED) / 2000.0
for i in range(NUM_LEDS):
hue = float(i) / NUM_LEDS
led_strip.set_hsv(i, hue + offset, 1.0, 1.0)
time.sleep(1.0 / UPDATES)