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All Journal Informatika Mulawarman: Jurnal Ilmiah Ilmu Komputer Jurnal Teknik Industri Terintegrasi (JUTIN) Just TI (Jurnal Sains Terapan Teknologi Informasi) ETAM: Jurnal Pengabdian kepada Masyarakat
Ahmad Rofiq Hakim
Politeknik Negeri Samarinda
Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Library & Information Science Mathematics Mechanical Engineering Physics Social Sciences Other

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Rancang Bangun Sistem Pemadaman Ruangan Berbasis IoT dengan Metode Algoritma C4.5 Varian Rhaesa; Fara Triadi; Ahmad Rofiq Hakim
Jurnal Teknik Industri Terintegrasi (JUTIN) Vol. 9 No. 3 (2026): July
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jutin.v9i3.59771

Abstract

The IoT-based indoor fire extinguishing system with the C4.5 algorithm was developed to improve early detection, real-time monitoring, and automatic extinguishing at room scale. The system uses an ESP32, MQ-135, flame infrared, DHT22, and ultrasonic sensors to read environmental conditions, then sends the data to Firebase Realtime Database and an Android application. The C4.5 model uses a five-point time window to predict Safe, Alert, and Danger states. Training results show an average accuracy of 84.9% and best performance above 90%. Functional testing on 20 scenarios produced 13 successful and 7 failed cases, with a 65% success rate. Failures were mainly caused by mechanical belt-conveyor constraints, indicating that stronger mechanical components should be prioritized in future development.
Kendali Alat Sterilisasi Sepatu Berbasis Mobile Rakhmad Dhani; Arsan Kumala Jaya; Ahmad Rofiq Hakim
Jurnal Teknik Industri Terintegrasi (JUTIN) Vol. 9 No. 3 (2026): July
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jutin.v9i3.60344

Abstract

Shoes frequently come into contact with floors and the outdoor environment, making them a potential medium for spreading bacteria and viruses. This study aims to design and build an IoT-based shoe sterilization system that can be monitored and controlled via an Android application. The system uses an ESP32 microcontroller, DHT22 temperature and humidity sensor, MC-38 door sensor, and LJ12A3-4-Z/BX proximity sensor. The sterilization process uses a 254 nm UV-C lamp integrated with Firebase Realtime Database. The system can automatically detect shoe types, set a maximum temperature of 34°C for sneakers and 50°C for safety shoes, and automatically turn off the UV-C lamp when the door is opened. Test results show all components worked as designed. The integration of ESP32, Firebase, and the Android app proved to be an effective IoT-based sterilization solution. 
Co-Authors Agus Triyono Anton Topadang Arsan Kumala Jaya Awang Harsa Kridalaksana Bambang Cahyono Fara Triadi Hardiyanto Wardana Harpad, Bartolomius Irwansyah Irwansyah Muhammad Farman Andrijasa Noor Alam Hadiwijaya Noor Alam Hadiwijaya Rahmat Mujahidin Rajib Syahri Rakhmad Dhani Ratri Widianingsih Siti Lailiyah Syafriadi Meidianta Varian Rhaesa