from machine import Pin, PWM
import utime


# Define GPIO pins
IR_RECEIVER_PIN = 4
SERVO_PIN = 2
RELAY_PIN = 6


# Initialize IR receiver pin
ir_receiver = Pin(IR_RECEIVER_PIN, Pin.IN)


# Initialize servo motor
servo = PWM(Pin(SERVO_PIN))
servo.freq(50)  # Set PWM frequency to 50Hz


# Initialize relay pin
relay = Pin(RELAY_PIN, Pin.OUT)


# Function to rotate servo to 180-degree position
def rotate_servo():
   utime.sleep(2.5)
   servo.duty_u16(1622)  # Set duty cycle for 180 degrees position
   # Wait for servo to reach the position


# Function to turn on relay
def turn_on_relay():
   relay.value(1)  # Set relay pin high (turn on)
   utime.sleep(0.5)
   relay.value(0)






# Flag to track whether servo has already rotated
servo_rotated = False


# Loop to continuously read IR signals
while True:
   if ir_receiver.value() == 0 and not servo_rotated:
       # IR signal detected, turn on relay
       turn_on_relay()




      
       # Rotate servo to 180-degree position
       rotate_servo()


      
       servo_rotated = True