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Created February 5, 2021 08:31
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read ultrasonic
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read ultrasonic.py
import machine
import utime
# read ultrasonic
Trig = machine.Pin(6,machine.Pin.OUT) # Connect Trig pin to pin 6 and set to OUTPUT
Echo = machine.Pin(7,machine.Pin.IN) # Connect Echo pin to pin 7 and set to INPUT
def read_ultrasonic():
Trig.value(0)
utime.sleep_us(2)
Trig.value(1)
utime.sleep_us(10)
Trig.value(0)
while Echo.value() == 0:
pulse_start = utime.ticks_us()
while Echo.value() == 1:
pulse_end = utime.ticks_us()
pulse_duration = pulse_end - pulse_start
distance = pulse_duration//58
return distance
while True:
print(read_ultrasonic()) # print ultrasonic distance
utime.sleep(1) # sleep 1 second
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