import time
from machine import Pin,PWM,ADC
from picozero import Servo
import time
from machine import time_pulse_us
servo = Servo(6)
servo.min()
time.sleep(4)
trig_pin = Pin(0, Pin.OUT)
echo = Pin(1, Pin.IN) 
while True:
    trig_pin.value(0)
    time.sleep_us(2)
    trig_pin.value(1)
    time.sleep_us(10)
    trig_pin.value(0)
    while echo.value() == 0:
       signaloff = time.ticks_us()
    while echo.value() == 1:
       signalon = time.ticks_us()
    timepassed = signalon - signaloff
    distance = (timepassed * 0.0343) / 2
    if distance>100:
        servo.mid()
    else:
        servo.max()
    print("The distance from object is ",distance,"cm")
    time.sleep(0.5)