我已经给了这个代码一个好去,并得到它的工作到一个点。代码的第一部分是距离传感器,似乎工作正常,也是'如果'的声明,当我得到它来检查2厘米和30厘米之间的距离似乎也可以正常工作,接通5秒继电器,但我现在想要做的是让它接通2个继电器5秒钟,而不仅仅是1秒,但不知道如何将第二个继电器添加到混音中。目前,我已将Pi连接到4个继电器板。'距离传感器'和'继电器'的Python代码树莓派
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()
'如果距离> 2 <30:'是不是有效的语法,如果你想链的表达是'如果2 <距离<30:' –