from machine import Pin, PWM, time_pulse_us
import time


trigger_Pin=15
echo_Pin=5
Buzzer_Pin=13

trigger = Pin(trigger_Pin, Pin.OUT)
echo = Pin(echo_Pin, Pin.IN)
buzzer = PWM(Buzzer_Pin)

def get_distance():
    trigger.value(0)
    time.sleep_us(2)
    trigger.value(1)
    time.sleep_us(10)
    trigger.value(0)
    pulse_time = time_pulse_us(echo, 1, 30000)
    distance = pulse_time / 58
    return distance

while True:
    distance = get_distance()
    print("Distance:", distance, "cm")

    intensity = int(1023 - (distance * 10)) 

    intensity = max(0, min(intensity, 1023))

    buzzer.duty(intensity)

    time.sleep(0.1)