For more than 3 decades, Smart Home automation App Development has been a promise – that hasn’t been delivered yet. But now the Digital Electronics Manufactures, the Home Appliances Manufacturers and the Third Party Developers – they are all gearing up to deliver much awaiting “Home Automation Application” through smart Home automation app development to let the users live the dream of Smart Home.
So what exactly has changed now? The internet of things and the number of handheld devices aka – Smart Phones & Tablets makes much of this possible. Smart home automation app development itself has become a serious concept due to the availability of higher bandwidth and the extensions rich platforms to build digital electronics gadgets for every possible use inside a Home. And using the handheld devices powered by iOS and Android offers the extensibility to autonomously operate these gadgets – seamlessly.
By applying basic ideas, a smart home automation program reduces human time and labor. Such a program helps universally like in the military and surveillance applications. The present modern world needs them everywhere!
Wireless technology is the secret
Bluetooth, WI-FI, and Zigbee Communications initially launch home automation. According to project needs, such communication is deployed. Connecting many gadgets with WI-FI enables control, absolutely crucial for surveillance applications.
Bring the change into your home
Every switch and appliance is connected to a Smart Home. Isn’t that great? A phone app or the human voice controls them, compatible with the Google Assistant software too.
Easy enough to comprehend, the Smart Home Automation System is WiFi based. The Voice Controlled Home Automation uses NodeMCU ESP-12 and Firebase Realtime Database.
“We support the pillars of client’s business through our highly efficient and innovative apps.”
Motion Detection
The Home Automation System most significantly understands motion. In response to the motion, it transmits commands to the firebase database. As data values are updated, the rank of light based on the current status of light and sensor is adjusted.
Watch a video demo of the system and how it works:
Calculation of electricity charges
The project enabled us to estimate the extent of usage of electronic devices. The electricity charges could be calculated accordingly.
How does the system function?
An interface of one relay with the NodeMCU ESP8266 12E WiFi Module controls one light. Apply the same system to the connected Home Appliances. Using an Android app having ON and OFF Buttons sends a signal to the NodeMCU that controls the relay output.
Each NodeMCU is assigned a particular IP address. The IP address facilitates the Android App access control.You need NodeMCU similarly to connect to the local WiFi.
Hardware Requirements
● NodeMCU – ESP – 12 development board with Wi-Fi SoC
● Relay module
● Motion Sensor
● One 100 W Bulb
Two platforms enabled the home automation application
● Google Assistant
● Firebase Realtime Database
● Android and Web Application using Kodular
TheNodeMCU – ESP – 12 boards with WiFiSoC
NodeMCU is a cost-effective open-source IoT platform and hardware based on the ESP-12 module. NodeMCU provides access to the GPIO (General Purpose Input/Output) while (GPIO16) can only be used for GPIO read/write.
The popular, widely used development board NodeMcu is based on the ESP-12E WiFi Module. It combines easy programming with Arduino IDE (C\C++) and WiFi capability. The built-in programmer and CH340G USB-to-Serial chip flash the ESP8266 and serial output on a PC. Project development and prototypes are accomplished with ease.
ESP8266 NodeMcu
Similar to Arduino boards, the ESP8266 NodeMcu contains GPIO pins, voltage regulator, ADC, and Micro-USB port (for flashing and serial output). All together on one board. Additionally, the ESP-12 NodeMcu has an extensive WiFi that facilitates WiFi communication with a server or client.
A Tensilica L106 32-bit microcontroller unit (MCU) combines with a WiFi transceiver. Also included are 11 GPIO pins* (General Purpose Input/Output pins), and an analog input. These constituents indicate that you can program it like a regular Arduino or any other microcontroller.
Further, WiFi enables connection to your WiFi network or the Internet. Do you wish to host a web server with real web pages or connect with your smartphone?
A world of great possibilities opens up! A chip has now transformed into the most popular IoT device around.
Relay module.
The ESP8266 controls AC household appliances remotely with a relay for the best results. By relay, we mean an electrically operated switch that turns on and off, allowing current flow. Low voltage 3.3V from the ESP8266 GPIOs controls it. We can thus control high voltages like 12V, 24V, or the mains voltage.
Block Diagram of NodeMCU and Relay Module with Light
The relay uses an electromagnet to switch electrical appliances on and off mechanically. A relatively small electrical current operates the relay that switches a much larger electric current on and off. Safety is assured with relays without physical contact between the NodeMCU and the AC devices.
The relay uses an electromagnet to mechanically switch electric appliances. A relay can be operated by a relatively small electric current that can turn ON or OFF a much larger electric current. Using relays is safe as there is no physical contact between NodeMCU and AC devices.
Relay Pinout
Study the pinout of a 2-channel relay module. The similarity is found when you use a different number of channels in a relay module.
The two connectors are there (with three sockets each) on the left side of the relay module that connects high voltage. The pins located on the right side (low-voltage) connect to the ESP8266 GPIOs.
Motion Sensor
A PIR sensor detects infrared heat radiations. PIR sensors are useful in detecting moving living objects that emit infrared heat radiations.
The output (in terms of voltage) of the PIR sensor is high when it senses motion. The output is low when there is no motion (stationary object or no object). PIR sensors have numerous applications like room light controls with human detection, human motion detection for security purposes at home, etc.
Firebase Realtime Database
Google Assistant enables the control of smart home devices. Lights and switches, fans, and thermostats are some possibilities.Google Assistant works on AI (Artificial Intelligence) and is activated through the voice. Interact with Google Assistant through voice instructions to search the Internet, schedule events, set alarms, and control appliances. Smartphones and Google Home devices deliver such services.
How to build an application to control home appliances? We used Google Assistant to control a 60W bulb. Firebase Realtime Database server stores the application status and data.
We will build an application which can control home appliances. Here, we will control a 60W bulb using Google Assistant service.
This application includes Google assistant along with Firebase Realtime Database server which is store status and data of this application.
Authorization with Secret Key in web application
The first user enters a secret key to authenticate the application. The user is usually then redirected to the home screen.
In this screen, the user can also recover a
Home Screen
The device-user can change the status of the Bulb (Light) by clicking on a button.
Users can facilitate voice commands by clicking on the ‘Google Voice’ button.
key by clicking on ‘Forgot Secret Key.’
Smart Light Mode with Motion Sensor
The user can change the status of this model. Switched on, it works based on the motion sensor.
Power Usages Statistics
Users can view the statistics on electricity usage. Users can also display power volume and total usage time. Accordingly, estimated costs of light use are drawn up.
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Conclusion
The need for smart home automation is evidently growing due to the busy lifestyles and mundane routines. The repetitive daily tasks usually take up a lot of time that could be otherwise utilized in more important activities. A smart home application enables users to lead a stress-free life as they can manage all their activities effortlessly. However, developing a smart home app is a complex and time-consuming process as it involves establishing an interconnected system. It is, therefore, essential to have a holistic approach and a team of skilled developers to begin with.
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October 6, 2021 at 04:13AM by IoT Now Magazine, Khareem Sudlow
