import time
time.sleep(0.1) # Wait for USB to become ready

print("Hello, Ismidah!")
from machine import Pin, PWM
import time
import dht

relay = Pin(2, Pin.OUT)
dht_sensor = dht.DHT22(Pin(3))
trig = Pin(4, Pin.OUT)
echo = Pin(5, Pin.IN)
servo = PWM(Pin(6))
servo.freq(50)

def read_distance():
    trig.low()
    time.sleep_us(2)
    trig.high()
    time.sleep_us(10)
    trig.low()
    while echo.value() == 0:
        start = time.ticks_us()
    while echo.value() == 1:
        end = time.ticks_us()
    duration = time.ticks_diff(end, start)
    distance = (duration * 0.0343) / 2
    return distance

while True:
    try:
        dht_sensor.measure()
        temp = dht_sensor.temperature()
        hum = dht_sensor.humidity()
        print('Temp:', temp, 'C')
        print('Humidity:', hum, '%')
        
        dist = read_distance()
        print('Distance:', dist, 'cm')

        if temp > 50:
            relay.value(1)
        else:
            relay.value(0)

        if dist < 200:
            servo.duty_u16(8000)
        else:
            servo.duty_u16(2000)

    except Exception as e:
        print('Error:', e)

    time.sleep(1)