Code for the Dune Thumper project

Adding code and sound effect for the Dune Thumper project

Dune_Thumper/code.py

@@ -0,0 +1,59 @@
+# SPDX-FileCopyrightText: 2023 Liz Clark for Adafruit Industries
+#
+# SPDX-License-Identifier: MIT
+
+import time
+import board
+import audiocore
+import audiobusio
+import audiomixer
+import pwmio
+from digitalio import DigitalInOut, Direction, Pull
+from adafruit_ticks import ticks_ms, ticks_add, ticks_diff
+from adafruit_motor import servo
+import adafruit_lis3dh
+
+time.sleep(2)
+
+# 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
+
+# i2s playback
+wave_file = open("dune_thumper_sfx.wav", "rb")
+wave = audiocore.WaveFile(wave_file)
+audio = audiobusio.I2SOut(board.I2S_BIT_CLOCK, board.I2S_WORD_SELECT, board.I2S_DATA)
+mixer = audiomixer.Mixer(voice_count=1, sample_rate=22050, channel_count=1,
+                         bits_per_sample=16, samples_signed=True)
+audio.play(mixer)
+mixer.voice[0].play(wave, loop=True)
+mixer.voice[0].level = 0
+
+# servo control
+pwm = pwmio.PWMOut(board.EXTERNAL_SERVO, frequency=10)
+prop_servo = servo.ContinuousServo(pwm)
+servo_move = False
+
+i2c = board.I2C()
+int1 = DigitalInOut(board.ACCELEROMETER_INTERRUPT)
+lis3dh = adafruit_lis3dh.LIS3DH_I2C(i2c, int1=int1)
+lis3dh.range = adafruit_lis3dh.RANGE_2_G
+
+clock = ticks_ms()
+prop_time = 4000
+
+while True:
+    if not servo_move:
+        mixer.voice[0].level = 0.0
+        prop_servo.throttle = 0.0
+    else:
+        prop_servo.throttle = 0.5
+        mixer.voice[0].level = 0.5
+        if ticks_diff(ticks_ms(), clock) >= prop_time:
+            servo_move = False
+    if lis3dh.shake(shake_threshold=20):
+        servo_move = True
+        clock = ticks_ms()
+        clock = ticks_add(clock, prop_time)