Rancang Bangun Alat Monitoring Keamanan Rumah Berbasis Internet of Things (IoT)

Kurniawan, Agung and , Agus Supardi, S.T., M.T. (2026) Rancang Bangun Alat Monitoring Keamanan Rumah Berbasis Internet of Things (IoT). Skripsi thesis, Universitas Muhammadiyah Surakarta.

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Abstract

The rising number of residential burglaries, particularly when houses are left unoccupied, demands a security system that is more reliable than a conventional lock. Conventional locks are vulnerable to key duplication and key loss, and they provide no real-time information on the security status of the house to the owner. Beyond access locking, disturbances in the household electrical installation and intrusion through windows are also rarely monitored in an integrated manner within a single system. This research designed and built an Internet of Things (IoT) based home security monitoring device that integrates three main functions, namely an automatic door lock based on a 4x4 matrix keypad with a solenoid door lock actuator, household electrical load control through a 4 channel AC/DC relay, and window protection based on a magnetic reed switch sensor combined with a buzzer as an early warning. An ESP32 DevKit V1 microcontroller serves as the central controller that processes inputs from the matrix keypad and the magnetic sensor, drives the actuators through relay modules, and transmits the system status to the homeowner through the Blynk application. The 220 V AC source from the utility grid is stepped down to 12 V DC by an adaptor and further reduced to 5 V by an LM2596 step down module to supply the control circuit. Functional testing was carried out on every subsystem with a total of 20 trials. The results show that out of eight access code tests, all three registered codes successfully activated the solenoid and all five unregistered codes were rejected, so no false acceptance or false rejection occurred. Testing of the 4 channel relay in eight scenarios showed that the states of the Blynk application, the relay, and the power outlet were always synchronised without interference between channels. Testing of the magnetic sensor in four scenarios showed that the buzzer and the notification worked consistently according to the window condition. Overall the system achieved a success rate of 100%, confirming that the three subsystems can operate in an integrated manner on a single microcontroller and can be accessed remotely over the internet network.

Item Type:	Thesis (Skripsi)
Uncontrolled Keywords:	Blynk, ESP32, Home Security, Internet of Things (IoT), Smart Door Lock.
Subjects:	T Technology > TK Electrical engineering. Electronics Nuclear engineering T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK01 Weak flow
Divisions:	Fakultas Teknik > S1 Teknik Elektro
Depositing User:	AGUNG KURNIAWAN
Date Deposited:	22 Aug 2026 01:44
Last Modified:	22 Aug 2026 01:44
URI:	http://eprints.ums.ac.id/id/eprint/148856

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