home automation using raspberry pi

powerpoint presentation on home automation

1. GURU NANAK INSTITUTIONS TECHNICAL CAMPUS SCHOOL OF ENGINEERING & TECHNOLOGY DEPARTMENT OF EEE MAJOR PROJECT PRESENTATION ON HOME AUTOMATION WITH RASPBERRY PI AND GOOGLE ASSISTANT BY: PEDDIREDDY PRATHIMA 15WJ1A0284 SIRIKONDA SAI KALYAN 15WJ1A02A7 VATSAL JAT 15WJ1A02C1 MUTHYALA MANASWINI 16WJ5A0219 Project Coordinator Mr. K. Rajasekhar M.Tech., Assistant Professor Head of the Department Dr. k. Santhi M.E., (Ph.D) Under the Guidance of Mr. G. Ranga Purushotham M.Tech, (Ph.D) Associate Professor Department of Electrical and Electronics Engineering 1 17-04-2019

2. Index Objective Abstract Introduction Block Diagram Components Circuit Diagram Working program Advantages and Disadvantages Applications Future Scope Department of Electrical and Electronics Engineering 2 17-04-2019

3. Objective The purpose of this proposed model is to reduce the effort put in by the user to control the home appliances manually providing convenience to the user. This system uses Google Assistant software development kit provided by Google, to communicate with the Raspberry Pi and the consumers. The consumers give voice commands through the smart phone to control the appliances in their home, office, etc. and can change the speed of the fan or turn on and off lights, fans, air conditioners and other appliances such as smart lights and smart TVs, etc. Department of Electrical and Electronics Engineering 3 17-04-2019

4. Abstract In present days, there is a need for automation in operation daily essential needs and luxuries to make the life of the human being very convenient by reducing the effort and time. Most of the existing home automation systems that are available in the market use a chipset that is programmed to control a fixed number of appliances inside a house, which are given the working instructions using a mobile application or a web-based UI. The main drawback of such systems is that expansion not easy and requires a lot of technical assistance . This proposed model is an interactive home automation system that is unique in its operation. This model focuses on controlling the appliances using interactive voice-enabled control system and artificial intelligence, with the help of open sourced API of Google Assistant developed by Google Inc. Department of Electrical and Electronics Engineering 4 17-04-2019

5. Introduction The idea of the project is to integrate the concept of home automation using Google Assistant into Raspberry Pi and control the home appliances with voice-enabled commands. Google recently launched an API for Google Assistant, to the platforms other than Android, such as Linux and Windows which makes it easier in implementing automation. The required program is embedded into the Raspberry Pi with the help of Python language, which makes the programming simple and easy. Department of Electrical and Electronics Engineering 5 17-04-2019

6. Motor Driver Block Diagram : Fan Department of Electrical and Electronics Engineering 6 Air Conditioning Raspberry Pi 3 B+ Relay lights Water Pump IFTTT CLOUD OLP cloud Internet 17-04-2019 Google Assistant User

7. Components : Raspberry Pi 3 B+ The Raspberry Pi 3 Model B is the most popular Raspberry Pi computer made, and the Pi Foundation knows you can always make a good thing  better ! It has Cortex-A53 (ARMv8) 64-bit microprocessor operating at 1.4GHz and has 1GB SDRAM An external SD card acting as the internal storage and RAM, built-in Wi-Fi and Bluetooth chipsets, HDMI, LAN ports, 3.5mm headphone jack and 4 USB ports. Department of Electrical and Electronics Engineering 7 17-04-2019

8. Google Assistant Google assistant is an artificial intelligence powered virtual assistant developed by google that is primarily available on mobile and the smart home devices. Unlike the company previous virtual assistant, google now, google assistant can engage in a two way conversations. The Google Assistant API has to be enabled in the cloud console of the user’s Google account. Department of Electrical and Electronics Engineering 8 Relay A  relay  is an electrically operated switch. Many relays use an electromagnet to mechanically operate a switch. An active relay is employed here rather than active high to reduce the errors caused by interference. if we use active high noise will add in addition to interference . 17-04-2019

9. Motor Driver (L293D) L293D is a high current dual motor driver Integrated Circuit and capable of driving load having current up to 1A at the voltage ranging from 4.5V to 36V.  L-293D has to built-in H-Bridge driver circuits to control two DC motors in both clockwise and counter clockwise direction . This driver is used in our project to run the fan and air conditioner in our proposed project Department of Electrical and Electronics Engineering 9 DC Motor An electric motor is an electrical machine which converts electrical energy into mechanical energy. DC motors can operate directly from rechargeable batteries. A DC motor is used as a fan in this proposed project. 17-04-2019

10. DC Fan An electric motor is an electrical machine which converts electrical energy into mechanical energy. This is generally used in system, panel box etc. to keep the system cool . These fans operate at around 12V dc. Here this fan is used to represent air conditioning system. Light Bulb An  electric light with a wire filament heated to such a high temperature that it glows with visible light. Here we used two incandescent lamps, which consumes the power of 10W, and is connected to external AC supply through relay. Department of Electrical and Electronics Engineering 10 17-04-2019

11. DC Water Pump An electric motor is an electrical machine which converts electrical energy into mechanical energy. This is a submersible pump operate at around 12V dc. Its power consumption is around 3W. This is a small pump and can provide only a lift of 1.1m. Department of Electrical and Electronics Engineering 11 17-04-2019 IFTTT(If This Then That) If This Then That , also known as  IFTTT  is a free web-based service to create chains of simple conditional statements, called  applets . An applet is triggered by changes that occur within other web services such as Gmail, Facebook, Telegram, Instagram, or Pinterest.

12. Circuit diagram: 17-04-2019 Department of Electrical and Electronics Engineering 12

13. Working : The commands are given to google assistant in the phone by the user . T hese commands given by google assistant are further sent to IFTTT (If This Then That) account. Responses to these commands is pre-set in IFTTT. The google assistant gives then response giving these pre-set response to user . At the same instant the command from IFTTT is sent to OLP Cloud account. T he raspberry pi is connected to the internet via WI-FI or Ethernet. The data in the OLP cloud is read by the raspberry pi and responds to those commands switching the appliances as per the users requirements. Department of Electrical and Electronics Engineering 13 17-04-2019

14. Program : from urllib2 import * from time import * from signal import pause buttonFlag=0 import RPi.GPIO as GPIO GPIO.setwarnings(False) GPIO.setmode(GPIO.BCM ) light1 = 2 light2 = 17 17-04-2019 Department of Electrical and Electronics Engineering 14 To import URL library To import time library Import signal function from pause library Set button flag as 0 Import RPi.GPIO as GPIO To set GPIO warnings as false To set GPIO in BCM mode Define pin 2 as light1 Define pin 17 as light2

15. ACpin = 12 FANpin = 13 motor = 24 button = 4 GPIO.setup(light1,GPIO.OUT) GPIO.setup(light2,GPIO.OUT) GPIO.setup(ACpin,GPIO.OUT) GPIO.setup(FANpin,GPIO.OUT) GPIO.setup(motor,GPIO.OUT) GPIO.setup(button , GPIO.IN, pull_up_down = GPIO.PUD_UP) 17-04-2019 Department of Electrical and Electronics Engineering 15 Define pin 12 as AC Define pin 13 as FAN Define pin 24 as motor (Pump) Define pin 4 as button ( F loat switch) Setup GPIO 2 as output Setup GPIO 17 as output Setup GPIO 12 as output Setup GPIO 13 as output Setup GPIO 24 as output Set GPIO 4 as input and pull the internal resistors up

16. pi_pwm = GPIO.PWM(FANpin,100) pi_pwm.start(100) GPIO.output(light1,GPIO.HIGH) GPIO.output(light2,GPIO.HIGH) GPIO.output(ACpin,GPIO.LOW) GPIO.output(motor , GPIO.HIGH ) pi_pwm.ChangeDutyCycle(0) while True : a = urlopen ( 'http :// olp.madmaker.space /olp/device_pull?device_api_key=6dcc78313853af00391f9f3d603431a2 ').read().split(': ')[3].split('<')[0 ] 17-04-2019 Department of Electrical and Electronics Engineering 16 C reate a PWM with frequency of 100 Set initial PWM duty cycle at 100% Turn off light1 Turn off light2 Turn off ac Turnoff pump Set initial PWM duty cycle at 0% Defining a = the pull URL

17. print(a ) if(a !='0 '): while True: urlopen('http :// olp.madmaker.space /olp/device_push?device_api_key=6dcc78313853af00391f9f3d603431a2&device_status=0 ') k=urlopen ('http ://olp. madmaker .space/olp/device_pull?device_api_key=6dcc78313853af00391f9f3d603431a2 ').read().split('<br/>')[0].split(' ')[-1] if(k=='0'): break 17-04-2019 Department of Electrical and Electronics Engineering 17 Print the status present in a } to execute the command just once }

18. if (a == 'all on'): GPIO.output(light1,GPIO.LOW) GPIO.output(light2,GPIO.LOW) pi_pwm.ChangeDutyCycle(100) GPIO.output(ACpin,GPIO.HIGH ) elif (a == 'lights on'): GPIO.output(light1,GPIO.LOW) GPIO.output(light2,GPIO.LOW ) elif (a == 'light1 on '): GPIO.output(light1,GPIO.LOW ) 17-04-2019 Department of Electrical and Electronics Engineering 18 I f the status present in a is all on Every appliance will get tuned on If the status present in a is lights on Both the lights will get tuned on If the status in a is light1 on Light 1 will get turned on

19. elif (a == 'light1 off'): GPIO.output(light1,GPIO.HIGH) elif (a == 'light2 on'): GPIO.output(light2,GPIO.LOW) elif (a == 'light2 off'): GPIO.output(light2,GPIO.HIGH) elif (a == 'lights off'): GPIO.output(light1,GPIO.HIGH) GPIO.output(light2,GPIO.HIGH) elif (a == 'FAN A'): pi_pwm.ChangeDutyCycle(50 ) 17-04-2019 Department of Electrical and Electronics Engineering 19 I f the status present in a is light1 off Light 1 will get turned off If the status present in a is light2 on Light 2 will get turned on If the status present in a is light2 off Light 2 will get turned off If the status present in a is lights off Both the Lights will get turned off If the status present in a is FAN A Fan will run at 50% duty cycle

20. elif (a == 'FAN B'): pi_pwm.ChangeDutyCycle(75) elif (a =='FAN C' or a=='FAN on'): pi_pwm.ChangeDutyCycle(100) elif (a =='FAN off'): pi_pwm.ChangeDutyCycle(0) elif (a == 'AC on'): GPIO.output(ACpin,GPIO.HIGH ) elif (a == 'AC off'): GPIO.output(ACpin,GPIO.LOW ) 17-04-2019 Department of Electrical and Electronics Engineering 20 I f the status present in a is FAN B Fan will run at 75% duty cycle If status present in a is FAN C or FAN on Fan will run at 100% duty cycle If the status present in a is FAN off Fan will get tuner off If the status present in a is AC on AC will get turned on If the status present in a is AC off AC will get tuned off

21. elif (a == 'all off'): GPIO.output(light1,GPIO.HIGH) GPIO.output(light2,GPIO.HIGH) GPIO.output(ACpin,GPIO.LOW) pi_pwm.ChangeDutyCycle(0) GPIO.output(motor, GPIO.HIGH) if (a =='motor off' orGPIO.input(button )==0): GPIO.output(motor,GPIO.HIGH) elif (a == 'motor on'): GPIO.output(motor, GPIO.LOW ) 17-04-2019 Department of Electrical and Electronics Engineering 21 I f the status present in a is all off All the appliances will get tuned If the status present in a is motor off or button(float switch is 0) Motor (Pump) will get turned off If the status present in a is motor on Motor (Pump) will get tuned on

22. Department of Electrical and Electronics Engineering 22 Result : Result Prototype 17-04-2019

23. Advantages Convenience Using the voice-enabled control system gives convenience to operate any appliance and ease the burden of your daily routines, Such as having an air-conditioning on when you enter your house on a hot day will bring you relief. Customization Further customization can be done to this proposed model by interfacing commercially available smart home products such as smart lights and thermostats etc. Security W ith a smart house system, a consumer control his/her home/office on their fingertips no matter where the user is. This is secure as it does not involve any third party application having control over your device(mobile). Department of Electrical and Electronics Engineering 23 17-04-2019

24. Disadvantages Learning Curve An automated home comes with a few drawbacks. For a start, owing a smart house means having to learn how to use it. you will have to adapt to new technology, whether you are comfortable with it or not. once you do, you get access to every device at your fingertips. Reliability Technology can create disasters if it falls into wrong hands. Hackers can break into your home once they obtain the password to your lock. Further, you may encounter privacy issues if your camera captures unwanted footage of your neighbor. Internet connectivity Internet connectivity is the main drawback of this model. Any interruption in the internet connectivity will prevent the commands to get executed. Department of Electrical and Electronics Engineering 24 17-04-2019

25. Applications Lights Using Create elegant lighting scenes that set the mood of the room Adjust the lighting scenes yourself without calling the integrator for help. Heating And Cooling Make your life more comfortable and save energy Create multiple heating and cooling zones to get the ideal temperature in each room. Security All the devices in the home can be controlled using single device. Further adding a surveillance system to this model will enhance the security. Doors A ll the doors can be locked or unlocked without any effort . Department of Electrical and Electronics Engineering 25 17-04-2019

26. Future scope Home automation with Google Assistant is a fast-emerging technology. Currently, most of the smartphone market is leading in Android which comes with Google Assistant technology. Even iPhones can be installed with Google Assistant from the App Store. The constant updates coming from the Google Assistant SDK helps the device to be further developed with ease in controlling various appliances in industrial or commercial, domestic purpose, making it much easier to register more and more devices in the cloud console without any effort. Department of Electrical and Electronics Engineering 26 17-04-2019

27. Thank you! Department of Electrical and Electronics Engineering 27 17-04-2019