Cell Phone Controlled Home Appliances

Project Description:

1. App Inventor: App Inventor allows Android Apps to be built and has building blocks which are easy to understand and implement. There are 2 steps, first you need add interfacing elements to the application such as buttons, images and sounds. Then secondly, you need to add logic and actions with plain language instruction blocks that will snap together like building blocks. You can use MIT App Inventor for this.
2. Arduino/Genuino Uno :The digital and analog input/output pins equipped in this board can be interfaced to various expansion boards and other circuits. Serial communication interface is a feature in this board, including USB which will be used to load the programs from computer.
3. Wi-Fi Module: ESP8266 Wi-Fi module is generally used to establish the wireless communication between the devices. But this module is not capable of 5-3V logic shifting and will require an external logic level converter.
4. Bluetooth: HC-05 Bluetooth module is a generally used to provide a common platform for connecting Smart Phone with Microcontroller. Communication between Smart phone and Bluetooth will be Serial.
5. N-Channel Relay Module: The n-Channels Relay module’s operating voltage is 5V DC with drive current of 20mA. This relay can be interfaced with many no. of microcontrollers such as Arduino, AVR, PIC, ARM and MSP430. Here we use Arduino, because programming is not that much typical. This relay module has ports “NC” abbreviated as “Normally connected to COM”, “NO” abbreviated as “Normally open to COM” and “COM” abbreviated as Common. Along with these, there will be two types of LED’s, one is to show the power status of the board and other for showing the relay status. Here “N” indicates the no relays on single board. We have 2, 4, 6, 8, 10, 12-Channel Relay Module are available in the market.

Project Implementation:

1. The Relay Module is interfaced with the appliance to be controlled.
2. Now the Bluetooth will be interfaced with relay module and microcontroller
3. Once the interfacing is done, the Bluetooth Module is connected to the Bluetooth in the Smart Phone through Android app “ArduinoBluetooth” which is available in Playstore.
4. Once Bluetooth connection is established, you can directly turn on/off the appliance using the switches in the app.
5. Using this application, we can control upto 8 appliances.
6. The data about all of this will be sent to the cloud for storage and analysis

Software requirements:

1. Arduino IDE : You will be needing Arduino IDE software to write and upload the programming logic onto the Arduino Uno board
2. Thingspeak : Also, you need to create an account in the ThinkSpeak IoT platform to integrate the system onto the cloud and store the data online

• App Inventor
• Arduino Uno
• Bluetooth
• WiFi
• Relay

• Android
• Iot
• Smart systems