Changes by Limor

Code updated by Limor to respond to light/dark more quickly

Music_Box_with_Crickit/code.py

@@ -1,53 +1,33 @@
 # Music Box code in CircuitPython - Dano Wall and Mike Barela
+# Revised by Ladyada 2019-01-16
 
 import os
 import random
-from busio import I2C
-from adafruit_seesaw.seesaw import Seesaw
-from adafruit_seesaw.pwmout import PWMOut
-from adafruit_motor import servo
+from adafruit_crickit import crickit
 from analogio import AnalogIn
-from simpleio import map_range
 import neopixel
 import audioio
 import board
+import time
 
-# Create seesaw object
-i2c = I2C(board.SCL, board.SDA)
-seesaw = Seesaw(i2c)
+AUDIO_FILENAME = 'fur-elise.wav'
 
-# Create one servo on seesaw servo 2
-pwm = PWMOut(seesaw, 16)
-pwm.frequency = 50
-myservo = servo.Servo(pwm)
-myservo.angle = 0
-
-# Find all Wave files on the storage
-wavefiles = [file for file in os.listdir("/")
-             if (file.endswith(".wav") and not file.startswith("._"))]
-if len(wavefiles) < 1:
-    print("No wav files found in root directory")
-else:
-    print("Audio files found: ", wavefiles)
-
-# audio output
+# Audio output
 cpx_audio = audioio.AudioOut(board.A0)
+audio = audioio.WaveFile(open(AUDIO_FILENAME, "rb"))
 
-def play_file(filename):
-    f = open(filename, "rb")
-    wav = audioio.WaveFile(f)
-    cpx_audio.play(wav)
+# Rotating dancer
+dancer = crickit.servo_2
+dancer.angle = 0
+MAX_SERVO_ANGLE = 160
+move_direction = 1
 
 # neopixels!
 pixels = neopixel.NeoPixel(board.NEOPIXEL, 10, brightness=1)
 pixels.fill((0, 0, 0))
 
 # light sensor
-rawlight = AnalogIn(board.LIGHT)
-
-def light():
-    peak = map_range(rawlight.value, 2000, 62000, 0, 1023)  # map to 0 to 1023
-    return int(peak)
+light = AnalogIn(board.LIGHT)
 
 def wheel(pos):
     # Input a value 0 to 255 to get a color value.
@@ -66,28 +46,28 @@ def rainbow(value):
     for i in range(10):
         pixels[i] = wheel((value * i) & 255)
 
-index = 0
-sign = 1
 
 while True:
-    if light() < 130:
-        # Turn things off if light level < value
+    # turn off LEDs so we can tell if its dark out!
+    pixels.brightness = 0
+    # read light level
+    light_level = light.value
+    # turn LEDs back on
+    pixels.brightness = 1
+
+    # Turn things off if light level < value, its dark
+    if light_level < 2000:
         pixels.fill((0, 0, 0))
-        # myservo.angle = 0.0
         cpx_audio.stop()
     else:
+        if not cpx_audio.playing:
+            # Start playing the song again
+            cpx_audio.play(audio)
         # calculate servo rotation
-        if index > 246:
-            index = 0
-            sign = sign * -1
-        # Move servo one slot depending on current direction
-        if sign == 1:
-            myservo.angle = int(index / 2)
-        else:
-            myservo.angle = 123 - int(index / 2)
-        # play wav file when index is a multiple of 40 (~6x per
-        # servo rotation and the sound is not already playing
-        if (index % 40) == 0 and not cpx_audio.playing:
-            play_file(random.choice(wavefiles))
-        rainbow(index)
-        index += 1
+        if dancer.angle <= 0:
+            move_direction = 1
+        if dancer.angle > MAX_SERVO_ANGLE:
+            move_direction = -1
+        # Move servo one degree forward or backward.
+        rainbow(int(dancer.angle * 255/MAX_SERVO_ANGLE))
+        dancer.angle += move_direction