Abstract
This door security system is created to monitor the environment around the range of this tool. This system works by using the ultrasonic signal reflection from the distance sensor. This sensor is connected to the database server and recorded in the User Android app. This system uses Arduino Mega, Wemos D1 R2, distance sensor, camera VC0706, selonoid doorlock, and buzzer. The work of this tool is the sensor will send a ultrasonic signal continuously and then the ultrasonic reflection will be re-received by the sensor. The distance sensor will be received in Arduino Mega and sent to Wemos D1 R2 using serial software that the data will be sent to the database using the Internet network connected in Wemos.
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