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All Journal TEKNIK INFORMATIKA Jurnal Teliska Techno.Com: Jurnal Teknologi Informasi Teknika: Jurnal Sains dan Teknologi Jurnal Inspiration Sinkron : Jurnal dan Penelitian Teknik Informatika Jurnal Sisfokom (Sistem Informasi dan Komputer) DoubleClick : Journal of Computer and Information Technology Jurnal Teknologi Sistem Informasi dan Aplikasi JURIKOM (Jurnal Riset Komputer) AMALIAH: JURNAL PENGABDIAN KEPADA MASYARAKAT Jurnal Teknologi Informasi dan Pendidikan Building of Informatics, Technology and Science Journal of Innovation Information Technology and Application (JINITA) Jurnal Minfo Polgan (JMP) Ilmu Komputer untuk Masyarakat Journal of Natural Science and Technology Adpertisi: Bidang Sains dan Teknologi Jurnal Masyarakat Madani Indonesia Inspiration: Jurnal Teknologi Informasi dan Komunikasi JI-Tech
Nurhajar Anugraha
Politeknik Negeri Sriwijaya
Humanities Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Library & Information Science Mathematics Mechanical Engineering Public Health Social Sciences Other

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Sosialisasi Penerapan Digitalisasi Dalam Penataan Administrasi Laboratorium Teknik Telekomunikasi Rindu Nurhaliza; Suzan Zefi; Nurhajar Anugraha; M. Zakuan Agung; Rapiko Duri; Annisa Annisa; Yuris Ramadhona
Jurnal Masyarakat Madani Indonesia Vol. 4 No. 4 (2025): November
Publisher : Alesha Media Digital

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59025/2xqh8b88

Abstract

Digitalisasi peminjaman alat dan ruangan di Laboratorium Teknik Telekomunikasi Politeknik Negeri Sriwijaya bertujuan meningkatkan efisiensi, mempercepat administrasi, dan mendukung sistem paperless. Sistem berbasis web ini dikembangkan dengan PHP dan MySQL serta diuji menggunakan XAMPP. Hasilnya, proses peminjaman menjadi lebih cepat, akurat, dan terdokumentasi dengan baik melalui fitur login, form peminjaman, validasi data, pemantauan status, dan laporan. Digitalisasi ini berhasil mengurangi kesalahan, meningkatkan transparansi, dan mempercepat pengambilan keputusan. Selain itu, kegiatan ini dilakukan dengan metode sosialisasi kemudian dilanjutkan dengan uji coba website oleh mahasiswa, Tenaga Kependidikan dan Dosen selaku user. Hasil uji coba website menunjukkan bahwa sistem yang dibuat layak digunakan dan diharapkan dapat membantu dalam pengelolaan alat dan peminjaman ruangan pada Laboratorium Teknik Telekomunikasi agar lebih efisien. Berdasarkan hasil kuesioner nilai rata-rata uji kelayakan sistem sebesar 86,1% sangat layak.
BLIND STICK UNTUK PENYANDANG TUNA NETRA BERBASIS ARDUINO M.Raihan Alpinsyah; Novita Wulandari; Ririn Yuniar; Reny Annisa Witr; Nyimas Anniz Soufani; Seh Arya Dini; Nurhajar Anugraha; Rapiko Duri
JURNAL TELISKA Vol 19 No I (2026): TELISKA Maret 2026
Publisher : Teknik Elektro Polsri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36257/teliska.v19iI.11887

Abstract

The development of microcontroller technology opens up significant opportunities for the development of mobility aids for people with disabilities, particularly the visually impaired. This research designed and developed an Arduino-based Blind Stick that helps users detect obstacles around them. The system utilizes an ultrasonic sensor for distance detection, a buzzer for audio alerts, and a vibration module to provide tactile feedback when an object is within a certain distance. Data received by the sensor is processed by an Arduino microcontroller, enabling a fast and accurate response. Test results indicate that the device is capable of detecting objects within an effective range according to the user's mobility needs and providing easy-to-understand alerts. Therefore, this Arduino-based Blind Stick is expected to improve the safety, independence, and quality of life of visually impaired users in their daily activities
Sistem E-Voting berbasis Blockchain dengan Autentikasi Biometrik Sidik Jari dan Protokol Zero-Knowledge Proof Untuk Pengaman Privasi Nurhajar Anugraha; Muhammad Riswanto; Lindawati Lindawati; Asrul Asrul
Jurnal Minfo Polgan Vol. 14 No. 2 (2025): Artikel Penelitian
Publisher : Politeknik Ganesha Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33395/jmp.v14i2.15536

Abstract

Penelitian ini bertujuan untuk mengembangkan sistem e-voting berbasis blockchain dengan autentikasi biometrik sidik jari serta penerapan protokol zero-knowledge proofs sebagai pengamanan tambahan terhadap data pemilih dan hasil suara. Permasalahan utama yang dihadapi dalam sistem pemungutan suara elektronik konvensional adalah rendahnya kepercayaan terhadap keamanan data dan potensi manipulasi hasil. Metode penelitian yang digunakan mencakup perancangan sistem dengan arsitektur client-server, implementasi teknologi blockchain untuk pencatatan suara yang terenkripsi, serta integrasi biometrik sidik jari menggunakan BiometricPrompt API pada Android. Selain itu, sistem diverifikasi dengan kode OTP melalui email institusional sebagai bentuk validasi ganda pengguna. Hasil pengujian menunjukkan bahwa sistem dapat berjalan dengan baik dan memberikan keamanan yang tinggi karena setiap data suara tersimpan secara permanen dan tidak dapat diubah di jaringan blockchain. Autentikasi biometrik juga memastikan bahwa setiap pemilih terverifikasi secara unik sehingga tidak terjadi pemungutan suara ganda. Dengan demikian, sistem e-voting ini dinilai layak diterapkan untuk lingkungan akademik dan dapat dikembangkan lebih lanjut untuk pemilihan umum berskala lebih besar.
Performance Evaluation of a Standalone OFDM System for Digital Image Transmission over AWGN Channels Ade silvia handayani; Sarjana; Aryanti; Nurhajar Anugraha; Muhammad Hanif Fatin; Devi Wahyuni; Muhammad Rafly Wijaya; Dely Andini
Journal of Innovation Information Technology and Application (JINITA) Vol 8 No 1 (2026): JINITA, June 2026
Publisher : Politeknik Negeri Cilacap

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35970/jinita.v8i1.2991

Abstract

This study investigates the performance of a standalone digital communication system based on Orthogonal Frequency Division Multiplexing (OFDM) for digital image transmission over Additive White Gaussian Noise (AWGN) channels. The system was tested using two digital modulation techniques: Binary Phase Shift Keying (BPSK) and Quadrature Phase Shift Keying (QPSK). Unlike previous studies that focused on OFDM implementation in large-scale communication systems such as cellular networks, this research explores a simplified standalone scenario without any supporting network infrastructure. Simulations were carried out in the MATLAB environment using grayscale image inputs ranging from 1 MB to 10 MB, with signal-to-noise ratio (SNR) levels varying from 0 to 30 dB. The results show that BPSK modulation maintains a low Bit Error Rate (BER) of approximately 0.077 even under low SNR conditions (as low as 0 dB). In contrast, QPSK modulation achieves optimal performance when the SNR reaches at least 15 dB, where the BER drops to 0.00000. The image size did not significantly affect system performance, indicating robustness across varying data loads. Overall, the findings suggest that BPSK provides higher reliability in noisy channels, whereas QPSK offers better spectral efficiency under cleaner conditions. Therefore, the proposed standalone OFDM system demonstrates strong potential for lightweight data communication applications such as sensor networks and remote monitoring systems operating in limited network environments.
PERANCANGAN DAN ANALISIS JARINGAN 4G LTE PADA KOTA MALANG MENGGUNAKAN SOFTWARE ATOLL Nurhajar Anugraha; Fitri Ramadani; Neza Rismana Putri; Randy Angriawan; Andi Maulidinnawati Abdul Kadir Parewe; Asrul; Andi M. Yusuf
JURNAL TELISKA Vol 19 No 2 (2026): TELISKA Juli 2026
Publisher : Teknik Elektro Polsri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36257/teliska.v19i2.12376

Abstract

Perkembangan layanan komunikasi bergerak menyebabkan kebutuhan terhadap jaringan seluler dengan kualitas layanan yang baik semakin meningkat. Kota Malang merupakan salah satu wilayah perkotaan dengan tingkat aktivitas komunikasi yang tinggi sehingga memerlukan perencanaan jaringan yang optimal. Penelitian ini bertujuan untuk merancang jaringan LTE 2100 MHz di Kota Malang menggunakan software Atoll. Metode yang digunakan meliputi perhitungan Link Budget, Effective Isotropic Radiated Power (EIRP), Maximum Allowable Path Loss (MAPL), radius sel, luas cakupan, serta jumlah BTS yang dibutuhkan. Hasil perhitungan teoritis menunjukkan nilai EIRP sebesar 61 dBm, MAPL sebesar 153 dB, luas cakupan rata-rata sebesar 2,12 km² per BTS, dan kebutuhan sebanyak 52 site BTS untuk melayani seluruh wilayah Kota Malang seluas 110,06 km². Hasil simulasi menggunakan software Atoll menunjukkan kesesuaian dengan hasil perhitungan teoritis, yaitu jumlah BTS sebanyak 52 site dengan cakupan rata-rata 2,12 km² per site. Nilai rata-rata RSRP yang diperoleh sebesar -115,98 dBm, throughput teoritis sebesar 20,57 Mbps, serta BLER sebesar 5% yang masih berada dalam kategori baik. Hasil penelitian menunjukkan bahwa perencanaan jaringan LTE 2100 MHz menggunakan software Atoll mampu memberikan cakupan layanan yang memadai pada wilayah Kota Malang. Masalah yang sering dihadapi adalah keterbatasan coverage area dari Base Transceiver Station (BTS) sehinggatidak semua area dapat tercakup oleh jaringan 4G .
Sosialisasi Aplikasi Mobile Untuk Sistem Antrian Pada Puskesmas Sako Kota Palembang Nurhajar Anugraha; Aryanti Aryanti; Dyah Utari Yusa Wardhani; Pertiwi Nurul Utami; Imas Ning Zhafarina; Muhammad Hanif Fatin; Diah Novita Sari; Yulia Hapsari; Adhelia Febriasari Harahap
Amaliah: Jurnal Pengabdian Kepada Masyarakat Vol 9 No 1 (2025): Amaliah Jurnal: Pengabdian kepada Masyarakat
Publisher : LPPI UMN AL WASHLIYAH

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32696/ajpkm.v9i1.4545

Abstract

This Community Service Activity aims to provide knowledge about mobile applications for queuing systems that are expected to make it easier for patients who will check their health or seek treatment at the Health Center. The methods used in this activity include interview methods with the Health Center to find out the source of the problem that is the basis for this community service activity. Furthermore, a socialization method is carried out, where in this socialization activity an explanation will be given to both the Health Center and patients about the use of the application that will be designed. The results of this activity are socialization regarding the Mobile application for the patient queuing system along with socialization of the procedures for using the application. Where after the implementation of this activity is carried out, the application that will be designed will make it easier for patients and patients no longer need to sit and queue for a long time when going to the Sako Health Center for treatment.
Rancang Bangung Sistem Absensi Guru Berbasis Webcam Menggunakan Haar Cascade dan Local Binary patterns Histogram untuk Pengenalan Wajah Nurhajar Anugraha; Dea Ardyanti; Ali Nurdin
Jurnal Minfo Polgan Vol. 15 No. 2 (2026): Artikel Penelitian
Publisher : Politeknik Ganesha Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33395/jmp.v15i2.16419

Abstract

The teacher attendance system, which is still done manually, has many shortcomings, such as the ease with which data can be changed, errors when recording, and the slow process of calculating attendance. This research aims to design and create a teacher attendance system that uses a webcam with the Haar Cascade method and Local Binary Pattern Histogram (LBPH) to recognize faces. The Haar Cascade method is used to detect faces directly, while LBPH is used to recognize who the teacher is based on facial characteristics that have been stored in the data. This system was created using the Python programming language to process images and the Laravel framework as a web application platform. Existing features include teacher data management, facial data management, attendance using facial recognition, permit applications, absenteeism calculations, and attendance reports. The results of the system show that it can detect and recognize teachers' faces automatically, so that recording attendance is faster, more precise and efficient compared to the usual method. In addition, attendance data can be stored in one place and displayed in the form of statistics and reports that are helpful in school administration. In this way, the system created can improve the management of teacher absences by using facial recognition technology.
Perancangan Sistem Smart Home Berbasis Iot Menggunakan Komunikasi LoRa Dan Algoritma Fuzzy Logic Raihan Aldiantino; Ali Nurdin; Nurhajar Anugraha
Jurnal Minfo Polgan Vol. 15 No. 3 (2026): Artikel Penelitian
Publisher : Politeknik Ganesha Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33395/jmp.v15i3.16420

Abstract

The development of smart home systems has increased due to the Internet of Things' (IoT) rapid growth. However, most existing solutions rely on Wi-Fi or Bluetooth, which have limited communication ranges and relatively high power consumption. In addition, automation is often restricted to simple threshold-based ON/OFF control. This study proposes a smart home system that integrates LoRa (Long Range) communication with a Mamdani Fuzzy Logic algorithm to provide reliable long-range communication and adaptive control. The system adopts a hybrid communication architecture consisting of an online mode using Wi-Fi connected to the Adafruit IO Cloud platform and an offline mode using LoRa for local communication through a gateway. Two ESP32 microcontrollers are employed: a transmitter node equipped with DHT22 temperature and humidity, MQ-2 gas, and ZMPT101B voltage sensors, and a receiver node acting as a gateway with relay-controlled lighting and exhaust fan actuators. The Fuzzy Logic controller uses temperature and humidity as input variables and generates a PWM duty cycle output to regulate fan speed through nine IF–THEN rules. According to experimental findings, LoRa communication was able to achieve transmission delays of 2.20–8.00 seconds between 0 and 100 meters; however, at 110 meters, the delay increased to 22.50 seconds, indicating the effective communication limit. The Fuzzy Logic algorithm achieved 100% rule-base compliance in all test scenarios. A Node-RED dashboard successfully displayed sensor data in real time. The proposed system provides a reliable, energy-efficient, and adaptive smart home solution that outperforms conventional Wi-Fi-based approaches
Co-Authors Ade Silvia Handayani Adhelia Febriasari Harahap Ali Nurdin Andi M. Yusuf Andi Maulidinnawati Abdul Kadir Parewe ANGRIAWAN, RANDY Annisa Annisa Anugraha, Tri Reski Ardelia, Naila Aryanti Aryanti Aryanti Aryanti Aryanti Asrul Asrul Asrul Daviana, Feriska Putri Dea Ardyanti Dedy Atmajaya Dely Andini Devi Wahyuni Diah Novita Sari Dyah Utari Yusa Wardhani Fitri Ramadani H, Adriawan Handayani, Kurnia Wati Pascitra Harahap, Adhelia Febriasari I Wayan Rangga Pinastawa Imas Ning Zhafarina Irma Salamah Latif, Nuraida Lilis Nur Hayati Lindawati Lindawati Lindawati Lindawati M. Zakuan Agung M.Raihan Alpinsyah Malinda, Threa Mashud, Mashud Maulidinnawati, Andi Muhammad Hanif Fatin Muhammad Rafly Wijaya Muhammad Riswanto Musthofa Galih Pradana Neza Rismana Putri Novita Sari, Diah Novita Wulandari Nurul Afifah Arifuddin NURZAENAB, NURZAENAB Nyimas Anniz Soufani Pangayan, Yulianto Pertiwi Nurul Utami Prawira, Wanda Yudha Putri, Amanda Tsabita Raihan Aldiantino Ramadhan, Noer Randy Angriawan Randy Angriawan Rapiko Duri Reny Annisa Witr Rindu Nurhaliza Ririn Yuniar Salsabillah, Farhah Saputra , Febri Hidayat Sarjana Seh Arya Dini Seliana, Imalda Sopian Soim, Sopian Sulistia Suzan Zefi Umar, Muh Yulia Hapsari Yuris Ramadhona