راه اندازی سنسور خمش با استفاده از رزبری پای

import lcd #Import the LCD library by electro-passionindia
import time #Import time
import RPi.GPIO as GPIO #GPIO will be referred as GPIO only

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

#LCD pin definitions
D4=2
D5=3
D6=4
D7=17
RS=20
EN=21

binarys = (10,9,11,5,6,13,19,26) #Array of pin numbers connect to DB0-DB7


bits = [0,0,0,0,0,0,0,0] #resulting values of 8-bit data


for binary in binarys:
    GPIO.setup(binary, GPIO.IN) #All binary pins are input pins

  #Trigger pin
    GPIO.setup(22, GPIO.OUT) #WR and INTR pins are output


mylcd=lcd.lcd()
mylcd.begin(D4,D5,D6,D7,RS,EN)

#Intro Message
mylcd.Print("Flex Sensor with")
mylcd.setCursor(2,1)
mylcd.Print("Raspberry Pi")
time.sleep(2)
mylcd.clear()

while 1:

    decimal = Voltage = 0 #intitialize to zero

    GPIO.output(22, 1) #Turn ON Trigger
    time.sleep(0.1)
    GPIO.output(22, 0) #Turn OFF Trigger
    mylcd.clear()

#Read the input pins and update result in bit array
    for i in range(8):
        if(GPIO.input(binarys[i]) == True):
            bits[i] = 1
        if(GPIO.input(binarys[i]) == False):
            bits[i] = 0

#print binary values if required for debugging
##    mylcd.Print("Binary= ")
##    mylcd.setCursor(1,8)
##    for i in range(8):
##        mylcd.Print(bits[i])

    #calculate the decimal value using bit array
for i in range(8):
        decimal = decimal + (bits[i] * (2**(7-i)))

#Display decimal value
    mylcd.setCursor(2,1)
    mylcd.Print("D=")
    mylcd.setCursor(2,3)
    mylcd.Print(decimal)

#calculate voltage value
    Voltage = decimal * 19.63 *0.001 #one unit is 19.3mV

    #compare voltage and display status of sensor
mylcd.setCursor(1,1)
    if (Voltage>3.8):
        mylcd.Print("Bent Forward")
    elif (Voltage<3.5):
        mylcd.Print("Bent Backward")
    else:
        mylcd.Print("Stable")

    Voltage = str(round(Voltage,2)) #limit to two digit after decimal

    #display voltage
mylcd.setCursor(2,8)
    mylcd.Print("V=")
    mylcd.setCursor(2,10)
    mylcd.Print(Voltage)



    time.sleep(0.5) #relaxing time