Question

我已经给了这个代码一个很好的去，让它工作到一定程度。代码的第一部分用于距离传感器并且看起来工作正常，也就是'if'语句，当我检查2cm和30cm之间的距离时，通过接通继电器5秒也似乎工作正常，但我现在要做的是让它接通2个继电器5秒，而不仅仅是1，但不确定如何将第二个继电器添加到混音中。目前我将Pi连接到4继电器板。

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

GPIO.setwarnings(False)

TRIG = 23                                  
ECHO = 24                                 

print "Distance measurement in progress"

GPIO.setup(TRIG,GPIO.OUT)                 
GPIO.setup(ECHO,GPIO.IN)                 

while True:

  GPIO.output(TRIG, False)                
  print "Waitng For Sensor To Settle"
  time.sleep(2)                            

  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)            

  if distance > 2 and distance < 400:      
    print "Distance:",distance - 0.5,"cm"  
  else:
    print "Out Of Range"                  

GPIO.setwarnings(False)

  if distance >2 and < 30:
pinList = [3]

for i in pinList: 
    GPIO.setup(i, GPIO.OUT) 
try:
  GPIO.output(3, GPIO.LOW)
  print "ON"
  time.sleep(5)
  GPIO.output(3, GPIO.HIGH)
  print "OFF"

except KeyboardInterrupt:
  print "  Quit"

  GPIO.cleanup()

Answer 1

看起来你已经将许多不同来源切割在一起。其中一个原始脚本只是使用一个列表（pinList）来迭代 - 这个原始用法似乎已经丢失了。

以下代码可让您重回正轨。可能值得比较一下我所做的改变和进一步阅读。您需要更改第11行以匹配附加继电器的引脚号。

import RPi.GPIO as GPIO            
import time                        

GPIO.setmode(GPIO.BCM)                
GPIO.setwarnings(False)

TRIG = 23                                  
ECHO = 24                                 

# Add your relay output pins here:
pinList = [3, your_other_relaypin]

for pin in pinList: 
    GPIO.setup(pin, GPIO.OUT)

print "Distance measurement in progress"

GPIO.setup(TRIG,GPIO.OUT)                 
GPIO.setup(ECHO,GPIO.IN)          

try:
    while True:

        GPIO.output(TRIG, False)                
        print "Waitng For Sensor To Settle"
        time.sleep(2)                            

        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)            

        if distance > 2 and distance < 400:      
            print "Distance: {distance}cm".format(distance=(distance - 0.5) )  
        else:
            print "Out Of Range"                  

        if distance >2 and distance < 30:

            for pin in pinList: 
                print "ON PIN {pin}".format(pin=pin)
                GPIO.output(pin, GPIO.LOW)

            time.sleep(5)

            for pin in pinList: 
                print "OFF PIN {pin}".format(pin=pin)
                GPIO.output(pin, GPIO.HIGH)

    except KeyboardInterrupt:
        print "  Quit"
        GPIO.cleanup()

“距离传感器”和“中继”Raspberry Pi的Python代码

1 个答案: