Materials:-
Arduino UNO:- https://www.flyrobo.in/arduino_uno_r3_with_cable_for_arduino_uno?tracking=5c723900abvrl
HC-05 Bluetooth Module:- https://www.flyrobo.in/hc_5_bluetooth_wireless_uart_module?tracking=5c723900abvrl
4-CH Relay Module:- https://www.flyrobo.in/5v_four_channel_relay_module?tracking=5c723900abvrl
BreadBoard:- https://www.flyrobo.in/high_quality_solderless_breadboard_with_430_tie_point_for_arduino?tracking=5c723900abvrl
Circuit:-
**Remove RX and TX pins of Bluetooth module before uploading Code**
Code:-
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