adding code & sound for zelda prop

Adding CircuitPython code and sound effects for the Zelda Tri Rod prop guide

Zelda_Tri_Rod_Prop/code.py

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+# SPDX-FileCopyrightText: 2023 Liz Clark for Adafruit Industries
+#
+# SPDX-License-Identifier: MIT
+
+import time
+import random
+import board
+import audiocore
+import audiobusio
+import audiomixer
+from digitalio import DigitalInOut, Direction
+from adafruit_ticks import ticks_ms, ticks_add, ticks_diff
+import neopixel
+import adafruit_lis3dh
+
+# CUSTOMIZE SENSITIVITY HERE: smaller numbers = more sensitive to motion
+SWING_1_THRESHOLD = 130
+SWING_2_THRESHOLD = 170
+
+pixel_time = 10
+Y_THRESHOLD = -9.0
+
+fx_1 = audiocore.WaveFile(open("/sounds/swing1.wav", "rb"))
+fx_2 = audiocore.WaveFile(open("/sounds/swing1b.wav", "rb"))
+fx_3 = audiocore.WaveFile(open("/sounds/swing2.wav", "rb"))
+fx_4 = audiocore.WaveFile(open("/sounds/swing3.wav", "rb"))
+
+tracks = [fx_1, fx_2, fx_3, fx_4]
+audio = audiobusio.I2SOut(board.I2S_BIT_CLOCK, board.I2S_WORD_SELECT, board.I2S_DATA)
+mixer = audiomixer.Mixer(voice_count=3, sample_rate=22050, channel_count=1,
+                         bits_per_sample=16, samples_signed=True)
+audio.play(mixer)
+
+# external neopixels
+num_pixels = 50
+pixels = neopixel.NeoPixel(board.EXTERNAL_NEOPIXELS, num_pixels, auto_write=False)
+pixels.brightness = 0.2
+
+# Gradient colors (start and end)
+pale_green = (50, 255, 50)
+yellow = (255, 255, 0)
+# Pulse parameters
+pulse_speed = 0.01  # Speed of the pulse (lower is slower)
+brightness_step = 5  # Amount by which to step the brightness
+
+# onboard LIS3DH
+i2c = board.I2C()
+int1 = DigitalInOut(board.ACCELEROMETER_INTERRUPT)
+lis3dh = adafruit_lis3dh.LIS3DH_I2C(i2c, int1=int1)
+# Accelerometer Range (can be 2_G, 4_G, 8_G, 16_G)
+lis3dh.range = adafruit_lis3dh.RANGE_2_G
+
+# enable external power pin
+# provides power to the external components
+external_power = DigitalInOut(board.EXTERNAL_POWER)
+external_power.direction = Direction.OUTPUT
+external_power.value = True
+
+mode = 0
+brightness = 0
+increasing = True
+pixel_clock = ticks_ms()
+VERTICAL_TIME = 2.0  # Time in seconds the sensor needs to be vertical to trigger
+# Variables to track time
+vertical_start_time = None
+
+while True:
+    # default
+    if mode == 0:
+        if ticks_diff(ticks_ms(), pixel_clock) >= pixel_time:
+            for i in range(num_pixels):
+                # Calculate gradient between pale_green and yellow
+                ratio = i / (num_pixels - 1)
+                r = int((yellow[0] - pale_green[0]) * ratio + pale_green[0])
+                g = int((yellow[1] - pale_green[1]) * ratio + pale_green[1])
+                b = int((yellow[2] - pale_green[2]) * ratio + pale_green[2])
+
+                # Adjust brightness by scaling the RGB values
+                scaled_r = int(r * (brightness / 255))
+                scaled_g = int(g * (brightness / 255))
+                scaled_b = int(b * (brightness / 255))
+
+                pixels[i] = scaled_r, scaled_g, scaled_b
+            pixels.show()
+            # Adjust brightness up and down
+            if increasing:
+                brightness += brightness_step
+                if brightness >= 255:
+                    brightness = 255
+                    increasing = False
+            else:
+                brightness -= brightness_step
+                if brightness <= 0:
+                    brightness = 0
+                    increasing = True
+            pixel_clock = ticks_add(pixel_clock, pixel_time)
+        x, y, z = lis3dh.acceleration
+        #print(x, y, z)
+        if abs(y) > Y_THRESHOLD and abs(x) < 2.0 and abs(z) < 2.0:
+            if vertical_start_time is None:
+                vertical_start_time = time.monotonic()  # Start timing
+            elif time.monotonic() - vertical_start_time >= VERTICAL_TIME:
+                print("vertical")
+                mode = "vertical"
+        else:
+            vertical_start_time = None  # Reset if the sensor is not vertical
+        accel_total = x * x + z * z
+        if accel_total >= SWING_2_THRESHOLD:
+            print("swing 2")
+            mode = "swing 2"
+        elif accel_total >= SWING_1_THRESHOLD:
+            print("swing 1")
+            mode = "swing 1"
+    elif mode == "swing 1":
+        mixer.voice[0].play(tracks[random.randint(0, 1)])
+        while mixer.voice[0].playing:
+            pixels.fill(pale_green)
+            pixels.show()
+        mode = 0
+    # clash or move
+    elif mode == "swing 2":
+        mixer.voice[1].play(tracks[2])
+        while mixer.voice[1].playing:
+            pixels.fill(yellow)
+            pixels.show()
+        mode = 0
+    elif mode == "vertical":
+        mixer.voice[2].play(tracks[3])
+        while mixer.voice[2].playing:
+            pixels.fill(yellow)
+            pixels.show()
+        vertical_start_time = None
+        mode = 0