Ryan 라즈베리파이 도전기 : 7. 카메라센서, 초음파센서 그리고 부제센서

초음파센서 filename = us_1.py 

import RPi.GPIO as gpio    import time       gpio.setmode(gpio.BCM)       trig = 13    echo = 19       print ("start")     gpio.setup(trig, gpio.OUT)   gpio.setup(echo, gpio.IN)     try :     while True :       gpio.output(trig, False)       time.sleep(0.5)         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 * 17000       distance = round(distance, 2)         print ("Distance : ", distance, "cm")   except :     gpio.cleanup() 실행 명령어 sudo python3 filename.py 블로그참조

카메라센서 filename= ca.py

from picamera import PiCamera from time import sleep camera = PiCamera() camera.start_preview() for i in range(5):   sleep(5)   camera.capture("/home/pi/image%s.jpg" %i) camera.stop_preview 블로그참조

부저센서1

Import Rpi.GPIO as GPIO GPIO.setmode(GPIO.BCM) GPIO(.setmode(18,GPIO.out) Def buzz(pitch, duration):   period = 1.0 / pitch   delay = period / 2   cycles = int(duration * pitch)   for I in range(cycles):   GPIO.output(18, True)   time.sleep(delay)     GPIO.output(18, False)   time.sleep(delay) While True:   pitch_s  = raw_input(“Enter Pitch(200 to 2000) : “)   pitch = flat(pitch_s)   duration_s = raw_input(“Enter Duration (1to3): “)   duration = float(duration_s)   buzz(pitch, duration)

부저센서2 filename = bu1.py

import RPi.GPIO as GPIO import time GPIO.setmode(GPIO.BCM) gpio_pin = 3 scale = [ 261, 294, 329, 349, 392, 440, 493, 523 ] GPIO.setup(gpio_pin, GPIO.OUT) try:   p = GPIO.PWM(gpio_pin, 100)   p.start(100)   p.ChangeDutyCycle(90)   for i in range(8):     print (i+1)     p.ChangeFrequency(scale[i])     time.sleep(1)   p.stop() finally:   GPIO.cleanup()  +는 gpio에 연결하고  -는 gnd에 연결한다.

부저센서3

현재 가지고 있는 부서센서가 in, vcc, gnd가 장착된 부저센서라서 조작이 가능한지는 모르겠지만, gpio 를 in에 넣고, vcc를 +에 gnd를 -에 연결하니 정상적으로 작동한다.

통합센서

(제작중)