#RaspberryPi Mesafe Sensörü + LED Kullanımı

#RaspberryPi Mesafe Sensörü + LED Kullanımı

#RaspberryPi Mesafe Sensörü + LED Kullanımı
#------------------------------------------
import RPi.GPIO as GPIO
import time

GPIO.setwarnings(False) # Ignore warning for now
GPIO.setmode(GPIO.BCM) # Use physical pin numbering

LED_PIN = 12   # GPIO12 
GPIO.setup(LED_PIN, GPIO.OUT)

TRIG = 18 #GPIO18
ECHO = 23 #GPIO23

print("Distance Measurement")
GPIO.setup(TRIG, GPIO.OUT)
GPIO.setup(ECHO, GPIO.IN)
GPIO.output(TRIG, False)
print("Waiting for sensor")
time.sleep(2)
while True:
	GPIO.output(TRIG, True)
	time.sleep(0.00001)
	GPIO.output(TRIG,False)

	while GPIO.input(ECHO) == 0:
		pulse_start = time.time()

	while GPIO.input(ECHO) == 1:
		pulse_end = time.time()
		
	pulse_duration = pulse_end - pulse_start
	distance = pulse_duration * 17150
	distance = round(distance, 2)

	print("Distance:", distance, "cm")
  if distance < 20:
      GPIO.output(LED_PIN, GPIO.HIGH)
      print("Value is less than 20 - LED turned on!")
  else:
      GPIO.output(LED_PIN, GPIO.LOW)
	time.sleep(2)
GPIO.cleanup()