Blink animation with a user selected background color

Author: jposada202020

adafruit_led_animation/animation/blink.py

@@ -37,10 +37,17 @@ class Blink(ColorCycle):
     :param pixel_object: The initialised LED object.
     :param float speed: Animation speed in seconds, e.g. ``0.1``.
     :param color: Animation color in ``(r, g, b)`` tuple, or ``0x000000`` hex format.
+    :param background_color: Background color in ``(r, g, b)`` tuple, or ``0x000000`` hex format. Defaults to BLACK.
+    :param name: A human-readable name for the Animation. Used by the string function.
     """
 
-    def __init__(self, pixel_object, speed, color, name=None):
-        super().__init__(pixel_object, speed, [color, BLACK], name=name)
+    def __init__(
+        self, pixel_object, speed, color, background_color=BLACK, name=None
+    ):
+        self._background_color = background_color
+        super().__init__(
+            pixel_object, speed, [color, background_color], name=name
+        )
 
     def _set_color(self, color):
-        self.colors = [color, BLACK]
+        self.colors = [color, self._background_color]

docs/examples.rst

@@ -61,6 +61,14 @@ Demonstrates the blink animation.
     :caption: examples/led_animation_blink.py
     :linenos:
 
+Blink with a selcted background color
+----------------------------------------
+Demonstrates the blink animation with an user defined background color.
+
+.. literalinclude:: ../examples/led_animation_blink_with_background.py
+    :caption: examples/led_animation_blink_with_background.py
+    :linenos:
+
 Comet
 -----
 

examples/led_animation_blink_with_background.py

@@ -0,0 +1,31 @@
+# SPDX-FileCopyrightText: 2025 Jose D. Montoya
+# SPDX-License-Identifier: MIT
+
+"""
+This example blinks the LEDs purple with a yellow background at a 0.5 second interval.
+
+For QT Py Haxpress and a NeoPixel strip. Update pixel_pin and pixel_num to match your wiring if
+using a different board or form of NeoPixels.
+
+This example will run on SAMD21 (M0) Express boards (such as Circuit Playground Express or QT Py
+Haxpress), but not on SAMD21 non-Express boards (such as QT Py or Trinket).
+"""
+import board
+import neopixel
+
+from adafruit_led_animation.animation.blink import Blink
+from adafruit_led_animation.color import PURPLE, YELLOW
+
+# Update to match the pin connected to your NeoPixels
+pixel_pin = board.A3
+# Update to match the number of NeoPixels you have connected
+pixel_num = 30
+
+pixels = neopixel.NeoPixel(
+    pixel_pin, pixel_num, brightness=0.5, auto_write=False
+)
+
+blink = Blink(pixels, speed=0.5, color=PURPLE, background_color=YELLOW)
+
+while True:
+    blink.animate()