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All Journal Jurnal Sains Dan Teknologi (SAINTEKBU) Jurnal Pengabdian Masyarakat Asia Jumat Ekonomi: Jurnal Pengabdian Masyarakat Jumat Informatika: Jurnal Pengabdian Masyarakat Jumat Keagamaan: Jurnal Pengabdian Masyarakat Newton : Networking And Information Technology Exact Paper In Compilation (EPIC) INFORMATIKA JSITIK: Jurnal Sistem Informasi dan Teknologi Informasi Komputer Jurnal Sains Student Research Computer Journal
Sujono Sujono
Universitas KH. A. Wahab Hasbullah
Religion Agriculture, Biological Sciences & Forestry Arts Humanities Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Environmental Science Library & Information Science Mechanical Engineering Social Sciences Other

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Journal : computer journal

 1 
Sistem Monitoring Level Air Galon Berbasis IoT Menggunakan Sensor Berat (Load Cell) Alina Rusmiza; Sujono Sujono
Computer Journal Vol. 4 No. 1 (2026): February
Publisher : Yayasan Pendidikan Mitra Mandiri Aceh (YPMMA)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58477/cj.v4i1.354

Abstract

This study develops an Internet of Things (IoT)-based monitoring system to measure water levels in gallon containers using a load cell as the primary weight sensor. The system enables users to monitor remaining water in real time and prevent unexpected shortages during daily activities. The method involves assembling hardware consisting of a load cell and an ESP32 microcontroller, followed by a calibration process to ensure accurate weight measurements. Programmed through the Arduino IDE, the ESP32 wirelessly transmits processed sensor data to a cloud platform such as Google Sheets or a hosting service for storage and management. Water levels are visualized through a web-based dashboard that presents data in a clear and accessible format. A notification feature alerts users when the gallon reaches a predefined minimum threshold. Experimental results show that the sensor consistently detects weight changes with stable performance throughout the monitoring process. The dashboard successfully displays real-time data reflecting the actual gallon condition. Overall, the system offers an effective and practical solution for automated water-level monitoring in households, offices, and small businesses.
Implementasi Sistem Peringatan Banjir Dini dengan Sensor HC-SR04 Berbasis ESP32 Internet of Things Sujono Sujono; Muhammad Rusli M
Computer Journal Vol. 4 No. 1 (2026): February
Publisher : Yayasan Pendidikan Mitra Mandiri Aceh (YPMMA)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58477/cj.v4i1.385

Abstract

Floods are natural disasters that often occur in Indonesia and sometimes cause great material and human losses. This paper describes the design and implementation of an IoT-based flood early warning system using ESP32 microcontroller and HC-SR04 ultrasonic sensor technology. The system is capable of automated river water level measurements at 5 minutes interval with real-time data sent to a web-based monitoring dashboard. Field validation was conducted in a quantitative experimental study at a river dam facility located in Jombang Regency. Performance testing results show that the system has high reliability, achieving 98.63% data transmission success rate. The HC-SR04 sensor has measurement accuracy of 97.69% with Mean Absolute Error (MAE) value equal to 2.31%. The warning mechanism works by comparing the water level with certain thresholds so that the dashboard can display safe or alert status conditions based on measurements made by the HC-SR04 sensor. Experimental results prove that this system is effective and economically feasible as a flood early warning solution for vulnerable regions, enhancing disaster preparedness capabilities significantly.
Implementasi Sistem Keamanan Nirkabel Berbasis IoT Menggunakan Sensor Laser, ESP32, dan Platform ThingSpeak untuk Deteksi Intrusi Ruangan Mohammad Roziqin; Sujono Sujono
Computer Journal Vol. 4 No. 2 (2026): August
Publisher : Yayasan Pendidikan Mitra Mandiri Aceh (YPMMA)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58477/cj.v4i2.405

Abstract

Indoor security has become an increasingly important concern as digital technology continues to advance. Traditional alarm systems face two recurring limitations: the inability to support remote monitoring and the tendency of conventional motion sensors to produce false alarms under varying ambient temperatures. This study designs a room intrusion detection system using a laser beam as the trigger mechanism and an ESP32 microcontroller as the IoT-based control unit. The hardware implementation employs a Light Dependent Resistor (LDR) sensor with a 10-sample averaging technique to reduce signal noise, combined with hysteresis logic operating within a threshold range of 800 to 1100. The system is connected to the ThingSpeak cloud platform to enable real-time status updates. Testing across five lighting scenarios shows that the system reliably detects laser interruptions when LDR readings fall below 720 and returns to a safe state once readings exceed 1100. Security status updates were transmitted to the ThingSpeak dashboard with consistent HTTP responses (status code 200) for each condition change. These results indicate that ESP32 offers practical advantages in wireless connectivity and energy efficiency for a low-cost room security solution.
Co-Authors Abdur Rozaq Achmad Agus Athok Miftachuddin Ade Nur Rahman Adela Fiatindra Agasti Ahmad Khusnul Hakim Aji Setyo Hartono Prawoto Alina Rusmiza Amin Awal Amaruddin Anti Qurrota A'yuni Arfia Rahmi Febrianti Ashlihah Bima Imansyah Budi Prasetyo Devri Bayu Perdana Putra Diana Khusniyah Dimas Wahyu Listyawan Dwi Agung Sunaryo Dyah Ayu Sri Hartanti Elmi Iflahah Firdaus May Sulvani Hariono, Tholib Hikmatul Hasanah Hilyah Ashoumi Ifham Adlan Ino Angga Putra Isyatir Rodliyah Mahmudah Jauhar Imtikhan Khairunnusa’ Nur Muslimah Lailatul Jannah Laily Mufarrohah Lang Elang Timur Demokrat M Rio Andika M. Abdul Jalil M. Adam Zuhrial M. Faisal Kahfi M. Malik Fajar Amrullah Mahzia Ulhaq Almukhofi Mochamad Yusak Nur Machmudi Mochammad Risqi Albani Moh. Anshori Aris Widya Mohamad Anshori Aris Widya Mohammad Deffan Afandi Mohammad Ghazi Al Ghifari Mohammad Hufait Ibri Al Fahhiz Mohammad Roziqin Muhamad Bahrul A’lam Muhamad Khoirur Roziqin Muhammad Al Ghozali Muhammad Rusli M Muhammad Saiful Ayub Muhyiddin Zainul Arifin Munawarah Munawarah Munawaroh Munawaroh Novan Maulana Nur Khafidhoh Nur Khafidoh Nur Khafidoh Primaadi Airlangga Rahmat Aris Mujahidin Rangga Adi Setiawan RIKI NURFALAKHI Rina Dewi Febrianti Rizka Wulan Rahmadianti Rohmatulloh Rohmatulloh Sahrul Ramdani Saiful Anam Samsudin Samsudin Shoimaturrodliyah Shoimaturrodliyah Siti Sufaidah Subkhi Dendi Pratama Syafi’uddin Syafi’uddin Syarif Narullah Wahyunugroho Taufik Eko Yulianto Tri Siswoyo Ummi Uswatun Khasanah Wilujeng Amelia Zulfikar