It is the Bluetooth operated Home Automation System. In which you can switch ON or OFF home appliances by using Bluetooth.
As shown in the above image it is the wiring chat of the circuit that is required. It consists of 1) Power Supply Circuit.
2) Microcontroller Atmega328p.
3) Bluetooth module HC05.
4) Electromagnetic switch (Relay).
Download "Bluetooth terminal (BT) App" from Playstore. Once it is Install Pair it with "HC05" now as the controller has been programmed such that once "BT" send "0" it will turn "ON" "Relay A". If "1" is send from "BT" it Will turn "OFF" "Relay A". Similarly if "3" is send from "BT" it will turn "ON" "Relay B" turn "OFF" by sending "4".
So once BT sends any signal it will be Detected by HC05 and given to microcontroller which will magnetize or demagnetize Relay according to Program.
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