Raspberry Pi Camera & Ultrasonic With Python code

Raspberry Pi Project with RPI Camera to Take Photo & Video By Ultrasonic Sensor

At a certain distance between the ultrasonic sensor and the approaching object, will give command  to camera to take photo or video for any thing become near the device.

Python 3.7 Code:

#NSR Information Systems - www.nsris.com

import RPi.GPIO as GPIO
import time
GPIO.setmode(GPIO.BCM)

from picamera import PiCamera
from time import sleep
camera = PiCamera()
TRIG = 5 
ECHO = 17
print("Distance Measurement In Progress")
GPIO.setup(TRIG,GPIO.OUT)
GPIO.setup(ECHO,GPIO.IN)
GPIO.setup(18,GPIO.OUT)
def measure():
        GPIO.output(TRIG, False)
        print("Waiting For Sensor To Settle")
        time.sleep(.5)
        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 < 280 :
                print("LED on")
                GPIO.output(18,GPIO.HIGH)
                time.sleep(1)
                print("LED off")
                GPIO.output(18,GPIO.LOW)
                
                timestr = time.strftime("%Y-%m-%d %H:%M:%S")
                
                camera.start_preview()
                sleep(5)
                camera.capture("/home/pi/Desktop/Camera/{0}.jpg".format(timestr))
                camera.stop_preview()
                
                camera.start_preview()
                camera.start_recording("/home/pi/Desktop/Camera/{0}.h264".format(timestr))
                sleep(5)
                camera.stop_recording()
                camera.stop_preview()
while True:
        measure()