Merge pull request #620 from adafruit/Sitcom_SFX_Door_Trigger

Sitcom sfx door trigger

Author: ladyada

Sitcom_SFX_Door_Trigger/README.md

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+# Sitcom_SFX_Door_Trigger
+
+Code to accompany this tutorial:
+https://learn.adafruit.com/sitcom-sfx-door-trigger

Sitcom_SFX_Door_Trigger/Sitcom_SFX_Door_Trigger.py

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+import time
+import board
+from digitalio import DigitalInOut, Direction
+import pygame.mixer
+
+# setup inputs
+door_switch_pin = board.D23
+motion_sensor_pin = board.D24
+
+door = DigitalInOut(door_switch_pin)
+door.direction = Direction.INPUT
+
+motion = DigitalInOut(motion_sensor_pin)
+motion.direction = Direction.INPUT
+
+# setup output LED indicators
+motion_led_pin = board.D18
+door_led_pin = board.D25
+
+door_led = DigitalInOut(door_led_pin)
+door_led.direction = Direction.OUTPUT
+door_led.value = False
+
+motion_led = DigitalInOut(motion_led_pin)
+motion_led.direction = Direction.OUTPUT
+motion_led.value = False
+
+prev_door = False
+
+# audio settings
+pygame.mixer.init(44100, -16, 2, 1024)
+
+# sound files expect to be in the same directory as script
+enter_sound = pygame.mixer.Sound("./enter.wav")
+exit_sound = pygame.mixer.Sound("./exit.wav")
+
+while True:
+
+    # toggle door LED based on door sensor
+    if door.value:
+        door_led.value = True
+    else:
+        door_led.value = False
+
+    # toggle motion LED based on motion (PIR) sensor
+    if motion.value:
+        motion_led.value = True
+    else:
+        motion_led.value = False
+
+    # When the door is opened, if there is movement outside,
+    # It means that someone is entering.
+    # If not, someone is exiting.
+    if door.value and not prev_door:
+        if motion.value:
+            enter_sound.play()
+        else:
+            exit_sound.play()
+
+    prev_door = door.value
+    time.sleep(0.01)