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All Journal ELINVO (Electronics, Informatics, and Vocational Education) JURNAL TEKNIK INFORMATIKA DAN SISTEM INFORMASI
Achmad Dimyati
Institut Teknologi dan Sains Nahdlatul Ulama Pekalongan
Computer Science & IT Education Electrical & Electronics Engineering

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APLIKASI BERBASIS ANDROID UNTUK PENJADWALAN KEGIATAN PONDOK PESANTREN MENGGUNAKAN KODULAR Devi Astri Nawangnugraeni; M Zakki Abdillah; Akrim Teguh Suseno; Achmad Dimyati; Daroji Daroji; Laily Amalia
JATISI (Jurnal Teknik Informatika dan Sistem Informasi) Vol 10 No 2 (2023): JATISI (Jurnal Teknik Informatika dan Sistem Informasi)
Publisher : Lembaga Penelitian dan Pengabdian pada Masyarakat (LPPM) STMIK Global Informatika MDP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35957/jatisi.v10i2.3448

Abstract

Implementation of information systems is currently needed in all areas of life such as economics, social, health and education. One of the uses of information systems in the field of education is to assist in managing the schedule of activities at Islamic boarding schools. Some Islamic boarding schools currently still use the manual method of scheduling activities, such as recording in the agenda book and the delivery of activity information still uses the bulletin board. This causes the possibility of redundancies of activities and activity information being delivered late. So an application system was developed to assist in managing scheduling at Islamic boarding schools. The application is designed using Unified Modeling Language (UML) and developed using Kodular tools. The results of the development are then tested using blackbox testing, the results that all menus and features in the application are running according to the performance flow, there are no errors and bugs and according to the needs of the Islamic boarding school. So that the application can be used to assist in managing the scheduling system at Islamic boarding schools effectively and efficiently.
Development of An IoT-Based Heart Rate Monitoring System Using Android Application Achmad Dimyati; Inayatul Inayah; Lis Sa'odah; M. Yusuf
Elinvo (Electronics, Informatics, and Vocational Education) Vol. 10 No. 2 (2025): November 2025
Publisher : Department of Electronic and Informatic Engineering Education, Faculty of Engineering, UNY

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/elinvo.v10i2.89724

Abstract

Real-time heart rate monitoring plays an important role in early detection of cardiovascular anomalies. However, many existing IoT-based solutions still lack seamless integration of real-time sensing, cloud synchronization, and mobile visualization. This study develops and evaluates an IoT-based heart rate monitoring system using a pulse sensor, Arduino Uno, NodeMCU ESP8266, Firebase real-time database, and an Android application. Experimental testing involving six participants and 60 measurement samples demonstrates that the system achieves a high accuracy of 98.63% compared to a standard fingertip oximeter, with an average error rate of 1.37%, indicating reliable and stable performance. The system supports continuous data acquisition, real-time cloud storage, and mobile access, enabling users to view live and historical heart rate trends through the Android interface. The main contributions of this research include an end-to-end integrated IoT architecture for continuous monitoring, empirical validation of accuracy using a medical-grade comparator, and the provision of time-stamped cloud-based heart rate data for remote health monitoring. These findings confirm the feasibility and significance of IoT–mobile integration as an accessible solution for continuous cardiovascular monitoring.
Co-Authors Daroji Daroji Devi Astri Nawangnugraeni Inayatul Inayah Laily Amalia Lis Sa'odah M. Yusuf M. Zakki Abdillah Suseno, Akrim Teguh