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Light On & off with smartphone using Arduino UNO

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Hello guys In this article I am going to tell you how you can make an easy smartphone-controlled Home Automation system. It is a very easy way to build this project. You need hardware to make:-  Arduino Uno HC -05 Bluetooth Module Single-Channel Relay module AC bulb, Wire, Plug 9-volt battery Or AC to DC power supply You need software to Run:- Arduino IDE ( for upload code to Arduino UNO) Project  code ( Download Arduino code from here ) Remote XY library ( you have to install remote xy library in Arduino IDE) Download Remote Xy android app from play store Connection Arduino Digital pin 3 to HC 05 Bluetooth module RX Arduino Digital pin 2 to HC 05 Bluetooth module TX Arduino  5v to HC 05 Bluetooth module VCC Arduino  gnd to HC 05 Bluetooth module gnd Arduino Digital pin 13 to Relay module signal in pin Arduino vin to Relay module vcc pin Arduino gnd to Relay module gnd pin Important :- Dont touch the circuit when Ac is connecte