Remote Equipment Monitor

import RPi.GPIO as GPIO
import serial
from serial import SerialException
import time
import os
from picamera import PiCamera
from shutil import copyfile
from Hologram.HologramCloud import HologramCloud
def readGPS(port):
    rv=""
    ch=''
    i=0
    while True:
        try:
            ch = port.read()
            if ch=='$':
                ch = port.read()
                ch = port.read()
                ch = port.read()
                rv += ch
                ch = port.read()
                rv += ch
                ch = port.read()
                rv += ch
                if rv=='GGA':
                    while i<36:
                        ch = port.read()
                        rv += ch
                        i+=1
                    return rv
        except SerialException:
            print 'GPS read error'
            
        return 'NA'
port = serial.Serial("/dev/ttyS0", baudrate=9600, timeout=3.0)
hologram = HologramCloud(dict(), network='cellular')
IRinputPin = 17
RelayPin = 18
GPIO.setmode(GPIO.BCM)
GPIO.setup(IRinputPin,GPIO.IN, pull_up_down=GPIO.PUD_UP)
GPIO.setup(RelayPin, GPIO.OUT)
print('System Armed')
camera = PiCamera()
while True:
    
    if (GPIO.input(IRinputPin)):
        time.sleep(10)
    else:
        print('IR input detected')
        GPIO.output(RelayPin,1)
        camera.capture('/home/pi/webcam.jpg')
        timestr = time.strftime("%Y%m%d-%H%M%S")
        filename2 = ('/home/pi/'+timestr+'.jpg')
        copyfile('/home/pi/webcam.jpg', filename2)
        print('Saving Picture')
        os.system("python /home/pi/sendnotify.py")
        print('Sending email')
        GPIO.output(RelayPin,0)
        result = hologram.network.connect()
        if result == False:
            print 'Failedto connect to Hologram network'
        else:
            print 'Hologram Network Connected!'
            response_code = hologram.sendMessage("Motion Detected at: "+timestr)
            print hologram.getResultString(response_code)
            response_code = hologram.sendMessage("Cell Tower GPS Location: Lat:"+
            hologram.network.modem.location.latitude+" Lon: "+
            hologram.network.modem.location.longitude)
            print hologram.getResultString(response_code)
            rcv = readGPS(port)
            if rcv != 'NA':
                print(rcv)
                response_code = hologram.sendMessage("Equipment GPS Location:"
                +rcv)
                print hologram.getResultString(response_code)
            hologram.network.disconnect()