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import time import sys import RPi.GPIO as GPIO import Adafruit_DHT # GPIO Pins setup using GPIO.BOARD soil_moisture_pin = 11 # Pin 11 rain_sensor_pin = 13 # Pin 13 relay_pin = 16 # Pin 16 dht_sensor_pin = 15 # Pin 15 dht_sensor_type = Adafruit_DHT.DHT11 GPIO.setmode(GPIO.BOARD) GPIO.setup(soil_moisture_pin, GPIO.IN) GPIO.setup(rain_sensor_pin, GPIO.IN) GPIO.setup(relay_pin, GPIO.OUT) def read_soil_moisture(): return GPIO.input(soil_moisture_pin) def read_rain_sensor(): return GPIO.input(rain_sensor_pin) def read_dht_sensor(): humidity, temperature = Adafruit_DHT.read_retry(dht_sensor_type, dht_sensor_pin) return humidity, temperature def control_relay(state): GPIO.output(relay_pin, state) try: while True: soil_moisture = read_soil_moisture() rain_detected = read_rain_sensor() humidity, temperature = read_dht_sensor() print(f"Moisture Level: {'Dry' if soil_moisture == 0 else 'Wet'}") print(f"Rain Detected: {rain_detected}") print(f"Temperature: {temperature}°C, Humidity: {humidity}%") # Logic to control the relay based on sensor data if soil_moisture == 0 and not rain_detected and temperature > 25: print("Turning ON the relay/bulb.") control_relay(True) else: print("Turning OFF the relay/bulb.") control_relay(False) time.sleep(10) finally: GPIO.cleanup()
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