• How to scan your LAN for your phone’s IP address.
• How to send a text message to your phone using Twilio.
• How to create a greeter that greets you after you’ve been away from the house for more than a couple of minutes.

from twilio.rest import Client
import os
from time import sleep
from time import time

account_sid ="XXXXXXXXX" # Put your own Twilio account SID here.
auth_token ="XXXXXXXXX" # Put your own Twilio auth token here.

client = Client(account_sid, auth_token)

phoneIP = "10.0.1.25" # Put your own phone's IP address here.

zanStatus = 0 # start off not at home
timeElapsed = 0 # count in seconds how much time has passed
startTime = time()
currentTime = time()

checkFrequency = 10
lonelyTime = 120 # how long I need to be gone to get a reaction

def sendText():
	print("execute the sending of a text here")
	message = client.api.account.messages.create(
		to="+############", # Put your own cellphone number here.
		from_="+#############", # Put your own Twilio number here.
		body="Welcome home Zan!")

while True:
	isZanHome = os.system("ping -c 1 " + phoneIP)

	if isZanHome == 0:
		print("Zan is home!")
		startTime = time()
		if zanStatus == 0:
			zanStatus = 1
			print("We should send a text!")
			sendText()
	else:
		print("Zan is not home")
		if timeElapsed > lonelyTime and zanStatus == 1:
			print("Zan is really gone.")
			zanStatus = 0
			startTime = time()
	currentTime = time()
	timeElapsed = currentTime - startTime
	print(timeElapsed)

	sleep(checkFrequency)

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