Relay provides complete isolation between the low-voltage circuit on Arduino side and the high-voltage side controlling the load. 3: Control panel on Android smartphone Relay moduleĪ relay allows you to turn on or turn off a circuit using voltage and/or current much higher than what Arduino could handle. The module runs on 3.3V to 5V power supply.įig. Using these features it can communicate with other Bluetooth-enabled devices like mobile phones, tablets and laptops. 4), which supports master and slave mode serial communication (9600-115200 bps) SPP and UART interface. 2: Connections for the appliances Bluetooth moduleīluetooth module used in this project is HC-05 (Fig.
![a simple android program a simple android program](https://media.geeksforgeeks.org/wp-content/uploads/20191108134200/Screenshot-2119.png)
Connection details for each appliance are shown in Fig. The relay module and Bluetooth module can be, in turn, powered using a board power supply of Arduino Uno. Arduino Uno is powered with a 12V DC adaptor/power source. The number of channels depends on the number of appliances you wish to control. The home automation circuit is built around an Arduino Uno board, Bluetooth module HC-05 and a 3-channel relay board.
A SIMPLE ANDROID PROGRAM MOVIE
So you need not get up to switch on or switch off the device while watching a movie or doing some work.
![a simple android program a simple android program](https://www.informationlord.com/wp-content/uploads/2015/04/Signup-appyet.png)
Commands are sent via Bluetooth to Arduino Uno. Presented here is a home automation project using a simple Android app, which you can use to control electrical appliances with clicks or voice commands. So it makes sense to use these to control home appliances.
![a simple android program a simple android program](https://cdn.slidesharecdn.com/ss_thumbnails/android-basicsinandroidprogramming-chapter2-140804032311-phpapp01-thumbnail-4.jpg)
Nowadays, people have smartphones with them all the time.