ultra+dht11
import dht
from machine import Pin, PWM
import time


dhts = dht.DHT22(Pin(6))

trig = Pin(5, Pin.OUT)
echo = Pin(4, Pin.IN)


led = Pin(15, Pin.OUT)
buz = PWM(Pin(14))


button = Pin(6, Pin.IN, Pin.PULL_UP)

while True:

    
    if button.value() == 0:

       
        dhts.measure()
        t = dhts.temperature()
        h = dhts.humidity()

        trig.low()
        time.sleep_us(2)

        trig.high()
        time.sleep_us(10)
        trig.low()

        while echo.value() == 0:
            off = time.ticks_us()

        while echo.value() == 1:
            on = time.ticks_us()

        duration = on - off

        dist = (duration * 0.0343) / 2

        
        print("TEMPERATURE:", t)
        print("HUMIDITY:", h)
        print("DISTANCE:", dist)

        
        if t > 30 or dist < 3:

            led.value(1)

            buz.freq(3000)
            buz.duty_u16(20000)

        else:
            led.value(0)
            buz.duty_u16(0)

        time.sleep(1)

    else:
        led.value(0)
        buz.duty_u16(0)

    time.sleep(0.1)