我正在尝试使用Raspberry Pi 3和Pi Camera的访客监控系统。在此，我使用了以下组件
我按照以下教程进行操作 https://circuitdigest.com/microcontroller-projects/visitor-monitoring-with-raspberry-pi-and-pi-camera
但是我修改了上面的程序。我使用Adafruit Char LCD库显示消息。我的Python程序如下：
it.firstName我的所有组件都工作正常。问题是，当我叫import RPi.GPIO as gpio
import picamera
import time
from Adafruit_CharLCD import Adafruit_CharLCD
# instantiate lcd and specify pins
lcd = Adafruit_CharLCD(rs=26, en=19,
d4=13, d5=6, d6=5, d7=11,
cols=16, lines=2)
m11=17
m12=27
led=21
buz=16
button=20
#lcd BCM pin no
RS =26
EN =19
D4 =13
D5 =6
D6 =5
D7 =11
HIGH=1
LOW=0
gpio.setwarnings(False)
gpio.setmode(gpio.BCM)
gpio.setup(RS, gpio.OUT)
gpio.setup(EN, gpio.OUT)
gpio.setup(D4, gpio.OUT)
gpio.setup(D5, gpio.OUT)
gpio.setup(D6, gpio.OUT)
gpio.setup(D7, gpio.OUT)
gpio.setup(led, gpio.OUT)
gpio.setup(buz, gpio.OUT)
gpio.setup(m11, gpio.OUT)
gpio.setup(m12, gpio.OUT)
gpio.setup(button, gpio.IN, pull_up_down=gpio.PUD_UP)
#gpio.setup(button, gpio.IN)
gpio.output(led , 0)
gpio.output(buz , 0)
gpio.output(m11 , 0)
gpio.output(m12 , 0)
data=""
def capture_image():
lcd.clear()
lcd.message('Please Wait...')
data= time.strftime("%d_%b_%Y\%H:%M:%S")
camera.start_preview()
time.sleep(5)
print( data)
camera.capture('/home/pi/Desktop/Visitors/%s.jpg'%data)
camera.stop_preview()
lcd.clear()
lcd.message('Image Captured\n successfully')
time.sleep(2)
def gate():
lcd.clear()
lcd.message(" Welcome ")
gpio.output(m11, 1)
gpio.output(m12, 0)
time.sleep(1.5)
gpio.output(m11, 0)
gpio.output(m12, 0)
time.sleep(3)
gpio.output(m11, 0)
gpio.output(m12, 1)
time.sleep(1.5)
gpio.output(m11, 0)
gpio.output(m12, 0)
lcd.clear()
lcd.message(" Thank You ")
time.sleep(2)
lcd.clear()
# display text on LCD display \n = new line
lcd.message('MSD Gurukul \n Welcomes You')
time.sleep(2)
lcd.clear()
lcd.message('Visitor Monitor\nSystem using RPi')
time.sleep(3)
lcd.clear()
camera = picamera.PiCamera()
camera.rotation=180
camera.awb_mode= 'auto'
camera.brightness=55
lcd.clear()
lcd.message(" Please Press \n Button")
time.sleep(2)
try:
while 1:
d= time.strftime("%d %b %Y")
t= time.strftime("%H:%M:%S")
lcd.clear()
lcd.message("Time: %s"%t)
lcd.message("\nDate:%s"%d)
gpio.output(led, 1)
if gpio.input(button)==False:
gpio.output(buz, 1)
gpio.output(led, 0)
time.sleep(0.5)
gpio.output(buz, 0)
capture_image()
gate()
time.sleep(0.5)
except KeyboardInterrupt:
lcd.clear()
lcd.message("Thank You\n Visit Again")
time.sleep(3)
gpio.output(led, 0)
## gpio.cleaup()
finally:
lcd.clear()
exit(0)
时，它打开了门（表示向前运动有效）但无法关闭（意味着向后运动无效）
我将直流电机与Raspberry Pi的GPIO引脚号17,27（BCM引脚）连接。请检查我的gate()并提出帮助。