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Jurnal Ilmiah Teknologi dan Komputer (JITTER)
Published by Universitas Udayana
ISSN : -     EISSN : 27471233     DOI : https://doi.org/10.24843/JTRTI
Core Subject : Science,
Computer Science & IT
Jurnal Ilmiah Teknologi dan Komputer (JITTER) is an electronic journal that displays the work of the academic community of the Department of Information Technology, Faculty of Engineering, Udayana University. Jurnal Ilmiah Teknologi dan Komputer (JITTER) presents scientific information, especially in the field of Information and Computer Technology based on studies and research. Jurnal Ilmiah Teknologi dan Komputer (JITTER), published by the Department of Information Technology, Faculty of Engineering, Udayana University. The editors invite researchers, practitioners, and students to write about scientific developments in fields related to computer science and information technology. Jurnal Ilmiah Teknologi dan Komputer (JITTER), published 3 (three) times a year in April, August, and December. This journal contains research articles and scientific studies. All published manuscripts have passed the checking stage using Turnitin. However, all contents in the publication manuscript and its impact, are entirely the responsibility of the author/authors. Jurnal Ilmiah Teknologi dan Komputer (JITTER) merupakan jurnal elektronik yang menampilkan karya civitas akademik Program Studi Teknologi Informasi, Fakultas Teknik, Universitas Udayana. Jurnal Ilmiah Teknologi dan Komputer (JITTER) menyajikan informasi ilmiah khususnya pada bidang Teknologi Informasi dan Komputer berdasarkan kajian dan penelitian. Jurnal Ilmiah Teknologi dan Komputer (JITTER), diterbitkan oleh Program Studi Teknologi Informasi, Fakultas Teknik, Universitas Udayana. Redaksi mengundang peneliti, praktisi, dan mahasiswa untuk menulis perkembangan keilmuan di bidang yang berkaitan dengan ilmu komputer dan teknologi informasi. Jurnal Ilmiah Teknologi dan Komputer (JITTER), diterbitkan 3 (tiga) kali dalam setahun pada bulan April, Agustus, dan Desember. Jurnal ini berisi artikel penelitian dan kajian ilmiah. Semua naskah yang dimuat, telah melewati tahapan pengecekan menggunakan Turnitin. Meski demikian, segala isi di dalam naskah publikasi dan dampaknya, sepenuhnya menjadi tanggung jawab penulis/para penulis.
Arjuna Subject : Ilmu Komputer (semua kategori) - Ilmu Komputer (Lain-Lain)
Articles 4 Documents
 1 
Analysis of the Sensitivity of the SW-420 Vibration Sensor to Minor Mechanical Disturbances in the Safe Security System Naila Cahaya Putri; Tasmi; Muhammad Gald Teary
JITTER: Jurnal Ilmiah Teknologi dan Komputer Vol. 6 No. 3 (2025): JITTER Vol.6, No.3, December 2025
Publisher : Program Studi Teknologi Informasi, Fakultas Teknik, Universitas Udayana

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Abstract

Abstract The security of assets in closed storage such as safes faces challenges in the form of illegal unit removal and physical manipulation. This study aimed to design and evaluate an anti-theft alarm system based on the Arduino Uno microcontroller with an SW-420 vibration sensor. The approach used was a laboratory experimental method focusing on testing the system's responsiveness to low-intensity mechanical interference or "Level Easy". The results showed that the integration of the SW-420 sensor, relay module, and buzzer successfully detected physical anomalies in real-time with a response time of less than one second. The implementation of the pulseIn() function in the programming logic proved effective in processing digital vibration signals into accurate alarm activation instructions. Threshold adjustments via potentiometers and the application of debouncing methods successfully minimized the potential for false alarms. In conclusion, this prototype demonstrated high reliability as an independent and portable early warning system for the protection of static assets.  Keywords : Arduino Uno, SW-420 Sensor, Safe Security, Vibration.
Design and Implementation of Automatic Fan Control System Based on Room Temperature Using Microcontroller-Based LM35 Sensors Rangga Aditiawarman; Tasmi; Muhammad Gald Teary
JITTER: Jurnal Ilmiah Teknologi dan Komputer Vol. 6 No. 3 (2025): JITTER Vol.6, No.3, December 2025
Publisher : Program Studi Teknologi Informasi, Fakultas Teknik, Universitas Udayana

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Abstract

Room temperature control is an important aspect in maintaining user comfort and ensuring the efficient performance of electronic devices in enclosed spaces. Manual fan operation is considered ineffective because it cannot respond promptly to temperature changes and may lead to energy inefficiency. Therefore, this study aims to design and implement an automatic fan control system based on room temperature using an LM35 temperature sensor and an Arduino Uno microcontroller. The control method applied is threshold-based control, in which the fan automatically turns on or off according to a predefined temperature limit. The system consists of an LM35 sensor for temperature sensing, a microcontroller for data processing, a relay module as the actuator controller, a DC fan as the cooling device, and an I2C-based LCD as the display unit. System testing was conducted in an enclosed room with naturally varying temperature conditions. The experimental results show that the system is capable of reading room temperature stably and in real time, displaying temperature data clearly, and controlling the fan automatically and consistently according to the room temperature conditions. Based on its performance, the proposed system can be considered a simple, efficient, and easily applicable solution for room temperature control in small- to medium-scale enclosed environments. Keywords: temperature control, automatic fan, LM35 sensor, microcontroller, embedded system.
Blockchain Technology for Enhancing Cryptocurrency Transaction Security in Indonesia: A Systematic Literature Review Pourman sitio; Aldo Exaudi Sianipar; Elonsius Manik; Sartika Br Marbun; Yohana Oktavia Haloho; Santa Eliza Sitanggang; Jeni Rifkayani Marpaung; Sudarto
JITTER: Jurnal Ilmiah Teknologi dan Komputer Vol. 6 No. 3 (2025): JITTER Vol.6, No.3, December 2025
Publisher : Program Studi Teknologi Informasi, Fakultas Teknik, Universitas Udayana

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Abstract

Abstract This study aims to analyze the extent to which Blockchain technology improves the security of cryptocurrency transactions in Indonesia using a Systematic Literature Review (SLR). The need for a more secure and transparent system is the main background. The findings show that Blockchain improves security through encryption, consensus mechanisms, and decentralization, which ensure data integrity and reduce fraud. However, its implementation faces significant challenges in Indonesia, including scalability limitations, a lack of clear national regulations, and low public understanding. This research provides direction for developing a more secure and sustainable digital financial ecosystem in Indonesia.
Design of IoT-Based Smart Charging Power Supply for Pratima Security Komang Sadewa Cahaya Risna; I Nyoman Piarsa; AA.Kt.Agung Cahyawan Wiranatha
JITTER: Jurnal Ilmiah Teknologi dan Komputer Vol. 6 No. 3 (2025): JITTER Vol.6, No.3, December 2025
Publisher : Program Studi Teknologi Informasi, Fakultas Teknik, Universitas Udayana

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Abstract

A power supply is essential for the Pratima security system because it serves as the primary energy source that ensures all components of the Pratima security system can operate optimally, especially during power outages. This study designs a power supply system with a smart charging feature for the IoT-based Pratima security system. This system uses an ESP8266 microcontroller, current and voltage sensors, and is connected to the Telegram application to provide notifications when the 18650 battery is full. Unlike previous studies that utilize websites, this system offers a simpler and more efficient monitoring solution via Telegram. The goal is to maintain the quality of the 18650 battery, prevent overcharging, and provide a power reserve to keep the security system active. This study uses the Software Development Life Cycle (SDLC) method with a Waterfall model consisting of 5 stages: analysis, design, implementation, testing, and maintenance. The results of this study are expected to be an alternative power supply with a smart charging feature at an affordable price and can be applied to other IoT devices that require an automatic and efficient charging system.

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