CPX xmas tree code.

CircuitPlayground_Christmas_Tree/CircuitPlayground_Christmas_Tree.py

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+import time
+import board
+import neopixel
+
+# On CircuitPlayground Express, and boards with built in status NeoPixel -> board.NEOPIXEL
+# Otherwise choose an open pin connected to the Data In of the NeoPixel strip, i.e. board.D1
+pixel_pin = board.NEOPIXEL
+
+# On a Raspberry pi, use this instead, not all pins are supported
+# pixel_pin = board.D18
+
+# The number of NeoPixels
+num_pixels = 10
+
+# Increase or decrease between 0 and 1 to increase or decrease the brightness of the LEDs
+brightness = 0.6
+
+# The order of the pixel colors - RGB or GRB. Some NeoPixels have red and green reversed!
+# For RGBW NeoPixels, simply change the ORDER to RGBW or GRBW.
+ORDER = neopixel.GRB
+
+pixels = neopixel.NeoPixel(pixel_pin, num_pixels, brightness=brightness, auto_write=False,
+                           pixel_order=ORDER)
+
+
+def wheel(pos):
+    # Input a value 0 to 255 to get a color value.
+    # The colours are a transition r - g - b - back to r.
+    if pos < 0 or pos > 255:
+        r = g = b = 0
+    elif pos < 85:
+        r = int(pos * 3)
+        g = int(255 - pos * 3)
+        b = 0
+    elif pos < 170:
+        pos -= 85
+        r = int(255 - pos * 3)
+        g = 0
+        b = int(pos * 3)
+    else:
+        pos -= 170
+        r = 0
+        g = int(pos * 3)
+        b = int(255 - pos * 3)
+    return (r, g, b) if ORDER == neopixel.RGB or ORDER == neopixel.GRB else (r, g, b, 0)
+
+
+def rainbow_swirl(wait):
+    for j in range(255):
+        for i in range(num_pixels):
+            pixel_index = (i * 256 // num_pixels) + j
+            pixels[i] = wheel(pixel_index & 255)
+        pixels.show()
+        time.sleep(wait)
+
+
+def rainbow_fill(wait):
+    for j in range(255):
+        for i in range(num_pixels):
+            pixel_index = int(i + j)
+            pixels[i] = wheel(pixel_index & 255)
+        pixels.show()
+        time.sleep(wait)
+
+
+def christmas_flash(duration):
+    pixels.fill((255, 0, 0))
+    pixels.show()
+    time.sleep(duration)
+    pixels.fill((255, 255, 255))
+    pixels.show()
+    time.sleep(duration)
+
+
+while True:
+    for _ in range(5):
+        christmas_flash(0.5)
+
+    for _ in range(5):
+        christmas_flash(0.1)
+
+    pixels.fill((255, 0, 0))
+    pixels.show()
+    time.sleep(1)
+
+    rainbow_fill(0.001)  # Increase the number to slow down the rainbow
+
+    pixels.fill((0, 0, 0))
+    pixels.show()
+    time.sleep(1)
+    rainbow_swirl(0.001)  # Increase the number to slow down the rainbow