<![CDATA[ABSTRACT The use of inefficient home lights is often underestimated by some people. This often happens because of the public's indifference to leaving the lights on when they are not needed, and without realizing it, the cost of electricity bills also increases. The reason is none other than trivial things, where when you want to turn off or turn on the lights in a room in the house, it will require someone to go to an electrical device, this is what makes some people reluctant to turn off the lights and in the end the lights are not turned off and are left on. It is undeniable that in this modern era with technology that has developed rapidly, everything can be controlled automatically or remotely using a wireless system, but in controlling home lights currently still using manual methods. To make it easier for people to control lights, in this study, we will design a tool that can control Arduino Uno-based house lights using an Android Smartphone as a medium that will be used to control lights. Control is done through an application on an Android Smartphone. The application is made using the MIT APP IVENTOR software as an interface to control the on/off lights. The android smartphone sends data via Bluetooth which then the data will be received by the Bluetooth HC-05, then the data will be sent again via the Jumper cable connected to the Breadboard to the Arduino Uno microcontroller for processing, and outputs the output to the relay module which functions as a switch to control the on/off off lights. The distance that can be reached in controlling this lamp is a maximum of 10 meters without obstruction.]]>
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