导致树莓派/ python控制的arduino问题

Question

我的项目有2个部分有问题。 我正在使用树莓派读取和控制电位计和一些LED。

1当我用电位计控制LED时，LED的闪光阈值低但不高，我该如何解决？

（已修复）2首次启动脚本时，必须将电位计设置为0，否则会从电位计中读取异常读数，该如何解决？

我尝试添加一个延迟之前和之后。 我试过添加中心字符串之前，没有运气。 我在整个Google上都在寻找解决方案，但是没有运气。 我所发现的只是眨眼示例的脚本。

我通过python在树莓派上运行此脚本以控制arduino。 如果我将其张贴在错误的区域，请告诉我应该将其张贴在何处，以便我将其移动。

这是我的剧本！

from nanpy import Arduino
from nanpy import serial_manager
from time import sleep

serial_manager.connect('/dev/ttyUSB0')

POT = 0
LED1 = 13
LED2 = 12
LED3 = 11
LED4 = 10
LED5 = 9
LED6 = 8
LED7 = 7
LED8 = 6

Arduino.pinMode(POT, Arduino.INPUT)
Arduino.pinMode(13, Arduino.OUTPUT)
Arduino.pinMode(12, Arduino.OUTPUT)
Arduino.pinMode(11, Arduino.OUTPUT)
Arduino.pinMode(10, Arduino.OUTPUT)
Arduino.pinMode(9, Arduino.OUTPUT)
Arduino.pinMode(8, Arduino.OUTPUT)
Arduino.pinMode(7, Arduino.OUTPUT)
Arduino.pinMode(6, Arduino.OUTPUT)

print "starting"
while True:
    pot = Arduino.analogRead(POT)
#this is the section that is blinking when it shouldn't
    if pot < 450:
        Arduino.digitalWrite(LED1, Arduino.HIGH)
        Arduino.digitalWrite(LED2, Arduino.HIGH)
        Arduino.digitalWrite(LED3, Arduino.HIGH)
        Arduino.digitalWrite(LED4, Arduino.HIGH)
        Arduino.digitalWrite(LED5, Arduino.LOW)
        Arduino.digitalWrite(LED6, Arduino.LOW)
        Arduino.digitalWrite(LED7, Arduino.LOW)
        Arduino.digitalWrite(LED8, Arduino.LOW)
        sleep(.5)
#
    if pot < 650 > 450:
        Arduino.digitalWrite(LED1, Arduino.LOW)
        Arduino.digitalWrite(LED2, Arduino.LOW)
        Arduino.digitalWrite(LED3, Arduino.LOW)
        Arduino.digitalWrite(LED4, Arduino.LOW)
        Arduino.digitalWrite(LED5, Arduino.LOW)
        Arduino.digitalWrite(LED6, Arduino.LOW)
        Arduino.digitalWrite(LED7, Arduino.LOW)
        Arduino.digitalWrite(LED8, Arduino.LOW)
        sleep(.1)
    if pot > 650:
        Arduino.digitalWrite(LED1, Arduino.LOW)
        Arduino.digitalWrite(LED2, Arduino.LOW)
        Arduino.digitalWrite(LED3, Arduino.LOW)
        Arduino.digitalWrite(LED4, Arduino.LOW)
        Arduino.digitalWrite(LED5, Arduino.HIGH)
        Arduino.digitalWrite(LED6, Arduino.HIGH)
        Arduino.digitalWrite(LED7, Arduino.HIGH)
        Arduino.digitalWrite(LED8, Arduino.HIGH)
        sleep(.5)
#    print pot

Answer 1

我在初始化这一行看到一个问题：

POT = Arduino.analogRead(0)

然后，在此期间，您在此处使用POT作为引脚号，但是POT将在上面的行中初始化为变量：

pot = Arduino.analogRead(POT)

我认为这就是为什么您会得到意想不到的行为。 我认为，如果你改变的初始化POT到POT=0或者（如果它没有脚0），你的锅连接到引脚，它可能工作。

Answer 2

我想到了。 没想到眨眼问题。 但是，它的行为就像是将LED设置为关闭延迟约0.5秒。 这是我的新脚本。

from nanpy import Arduino
from nanpy import serial_manager
from time import sleep

serial_manager.connect('/dev/ttyUSB0')

POT = 0
LED1 = 13
LED2 = 12
LED3 = 11
LED4 = 10
LED5 = 9
LED6 = 8
LED7 = 7
LED8 = 6

Arduino.pinMode(POT, Arduino.INPUT)
Arduino.pinMode(13, Arduino.OUTPUT)
Arduino.pinMode(12, Arduino.OUTPUT)
Arduino.pinMode(11, Arduino.OUTPUT)
Arduino.pinMode(10, Arduino.OUTPUT)
Arduino.pinMode(9, Arduino.OUTPUT)
Arduino.pinMode(8, Arduino.OUTPUT)
Arduino.pinMode(7, Arduino.OUTPUT)
Arduino.pinMode(6, Arduino.OUTPUT)

print "starting"
while True:
    pot = Arduino.analogRead(POT)
    if pot < 450:
        Arduino.digitalWrite(LED1, Arduino.HIGH)
        Arduino.digitalWrite(LED2, Arduino.HIGH)
        Arduino.digitalWrite(LED3, Arduino.HIGH)
        Arduino.digitalWrite(LED4, Arduino.HIGH)
        Arduino.digitalWrite(LED5, Arduino.LOW)
        Arduino.digitalWrite(LED6, Arduino.LOW)
        Arduino.digitalWrite(LED7, Arduino.LOW)
        Arduino.digitalWrite(LED8, Arduino.LOW)
        sleep(.01)
    elif pot > 650:
        Arduino.digitalWrite(LED1, Arduino.LOW)
        Arduino.digitalWrite(LED2, Arduino.LOW)
        Arduino.digitalWrite(LED3, Arduino.LOW)
        Arduino.digitalWrite(LED4, Arduino.LOW)
        Arduino.digitalWrite(LED5, Arduino.HIGH)
        Arduino.digitalWrite(LED6, Arduino.HIGH)
        Arduino.digitalWrite(LED7, Arduino.HIGH)
        Arduino.digitalWrite(LED8, Arduino.HIGH)
        sleep(.01)
    else:
        Arduino.digitalWrite(LED1, Arduino.LOW)
        Arduino.digitalWrite(LED2, Arduino.LOW)
        Arduino.digitalWrite(LED3, Arduino.LOW)
        Arduino.digitalWrite(LED4, Arduino.LOW)
        Arduino.digitalWrite(LED5, Arduino.LOW)
        Arduino.digitalWrite(LED6, Arduino.LOW)
        Arduino.digitalWrite(LED7, Arduino.LOW)
        Arduino.digitalWrite(LED8, Arduino.LOW)
        sleep(.01)
    print pot