The Bluetooth wireless technology is set to revolutionize the way people perceive digital devices in our homes and office environment. This wireless technology is especially useful in home environment, where there exists hardly any infrastructure to interconnect intelligent appliances. It could be suitably used for home automation in a cost-effective manner. Operating over unlicensed, universally available frequency of 2.4 GHz, it can link digital devices within a bluetooth range. Building upon this theme; we propose a home automation system based on Bluetooth technology.
Bluetooth Module HC-05 is interfaced with the microcontroller Atmega328 (Arduino UNO). The microcontroller communicates with Bluetooth Module over it’s serial communication pins. The relays are interfaced with microcontroller through ULN2003 current driver IC. We can control electrical loads wirelessly using android phone using android app.
The Android Software in Mobile Phone sends proper commands to Bluetooth module which is then decoded by microcontroller to perform required switching operation of electrical loads. The 16*2 LCD Display is used to show the status of the circuit. The electrical loads are interfaced through relays.
Software:
- ARDUINO IDE
- EMBDDED CPP CODE
- PROTEUS SIMULATOR
Hardware :
- ATMEGA328 Microcontroller
- Bluetooth Module.
- ULN2003 Current Driver
- Relays
- 16*2 LCD Display
- AC Loads (Lamp, Fan etc)
Regulated Power Supply