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mainv2.py

+import grovepi
+import time
+
+# === GROVEPI PORT ASSIGNMENTS ===
+pir_sensor = 2             # D2
+ultrasonic_ranger = 4      # D4
+light_sensor = 0           # A0
+button = 3                 # D3
+led = 5                    # D5
+
+# === SETUP ===
+grovepi.pinMode(pir_sensor, "INPUT")
+grovepi.pinMode(button, "INPUT")
+grovepi.pinMode(led, "OUTPUT")
+
+# === LOOP: SENSOR READS + LED CONTROL ===
+print("Initializing GrovePi sensors for smart doorbell...")
+
+try:
+    while True:
+        # PIR Motion Sensor
+        motion = grovepi.digitalRead(pir_sensor)
+        print("Motion Detected!" if motion else "")
+
+        # Ultrasonic Distance
+        distance = grovepi.ultrasonicRead(ultrasonic_ranger)
+        print(f"Distance: {distance} cm")
+
+        # Light Sensor (0-1023)
+        light_level = grovepi.analogRead(light_sensor)
+        print(f"Light Level: {light_level}")
+
+        # Button Read + LED Control
+        button_state = grovepi.digitalRead(button)
+        if button_state == 0:
+            print("Button Pressed!")
+
+        time.sleep(1)
+
+except KeyboardInterrupt:
+    print("Exiting smart doorbell monitor.")
+except IOError as e:
+    print(f"IOError: {e}")