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All Journal International Journal of Reconfigurable and Embedded Systems (IJRES) Voteteknika (Vocational Teknik Elektronika dan Informatika) Journal of Computer System and Informatics (JoSYC) Bulletin of Computer Science Research Tsaqofah: Jurnal Penelitian Guru Indonesia CONSEN: Indonesian Journal of Community Services and Engagement Journal of Authentic Research
Ryan Fikri
Department Of Electronics Engineering Universitas Negeri Padang, Indonesia
Religion Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Environmental Science Industrial & Manufacturing Engineering Physics Public Health Social Sciences Other

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Analisa Pengaruh Truncated Corner Terhadap Bandwidth dan Return Loss Pada Antena Microstrip 2.4 GHz Ryan Fikri; Putra Jaya; Delsina Faiza
Voteteknika (Vocational Teknik Elektronika dan Informatika) Vol 11, No 2 (2023): Vol. 11, No 2, Juni 2023
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/voteteknika.v11i2.122119

Abstract

Antena merupakan salah satu perangkat telekomunikasi yang masih digunakan sampai sekarang dengan tujuan dan aplikasi tertentu. Antena yang ada telah banyak mengalami modifikasi untuk mendapatkan beberapa parameter demi mencapai fungsi yang diinginkan. Pada penelitian ini, dilakukan perhitungan dimensi dan desain antena microstrip dengan pencatuan coaxial-fed yang bekerja pada frekuensi 2.4 GHz. Tujuan penelitian ini adalah untuk melihat pengaruh truncated corner terhadap bandwidth dan return loss pada antena microstrip 2.4 GHz. Pendekatan eksperimental dilakukan untuk melihat optimasi antenna dengan menambahkan truncated corner untuk menambah bandwidth antena. Penambahan truncated corner menggunakan teknik parameter sweep untuk koefisien truncated corner (ptc) dari 0 sampai 6 dilakukan untuk melihat pengaruhnya terhadap bandwidth, return loss, dan frekuensi kerja dari antena tersebut. Hasil penelitian menunjukkan bahwa penambahan truncated corner memberikan pengaruh terhadap bandwidth dimana bandwidth mengalami kenaikan sampai pada nilai tertentu yakni sebesar 1.3 MHz. Selain itu, juga terjadi pergeseran frekuensi kerja antena ke frekuensi yang lebih tinggi dan lebih rendah diikuti dengan perubahan nilai return loss yang didapatkan.Kata kunci : Truncated Corner, Bandwidth, Return Loss, dan Microstrip. Antenna is one of the telecommunications equipment that is still used today for specific purposes and applications. The existing antenna has undergone many modifications to obtain several parameters to achieve the desired function. In this research, the dimensions and design of a coaxial-fed microstrip antenna were calculated and worked at a frequency of 2.4 GHz. The purpose of this study was to see the effect of the truncated corner on the bandwidth and return loss of the 2.4 GHz microstrip antenna. An experimental approach was taken to see antenna optimization by adding a truncated corner to increase the bandwidth of the antenna. The addition of a truncated corner using the parameter sweep technique for a truncated corner (ptc) coefficient from 0 to 6 was carried out to see the effect on the bandwidth, return loss, and working frequency of the antenna. The results showed that the addition of a truncated corner affected bandwidth where the bandwidth increased to a certain value of 1.3 MHz. In addition, there is also a shift in the working frequency of the antenna to a higher and lower frequency followed by a change in the value of the return loss obtained. Keywords: Truncated Corner, Bandwidth, Return Loss, dan Microstrip.
Enhancing Teachers' Proficiency in Implementing Augmented Reality Technology as Interactive Learning Media Lativa Mursyida; Fadhli Ranuharja; Ika Ika Parma Dewi; Agariadne Dwinggo Samala Agariadne Dwinggo Samala; Ryan Fikri Ryan Fikri; Randi Proska Sandra Randi Proska Sandra; Efrizon Efrizon
CONSEN: Indonesian Journal of Community Services and Engagement Vol. 3 No. 2 (2023): Consen: Indonesian Journal of Community Services and Engagement
Publisher : Institut Riset dan Publikasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.57152/consen.v3i2.944

Abstract

Creativity is critical in education, especially for teachers in crafting instructional media that captivates and engages students' interest in comprehending the subject matter. Each student possesses distinct interests and enthusiasms towards the instructional press, allowing educators to innovate in devising captivating learning resources. One form of instructional media that offers a unique experience is augmented reality (AR) based media, which delivers individualized audio-visual interactions and experiences. In this research, we harness the Assemblr Edu platform, an AR and VR-based instructional media tool, within a community engagement workshop held at SMPN 3 Batusangkar, involving participation from educators of the Natural Sciences Teachers' Subject Study Group (MGMP IPA) in Tanah Datar Regency. The research aims to enhance the creative aptitude of educators in designing instructional media using the augmented reality technology of Assemblr Edu. Employing a quantitative approach, we gauge the extent of success among educators in crafting interactive instructional media using the Assemblr Edu platform, yielding augmented reality instructional media accessible through Android smartphones. The research findings underscore that Assemblr Edu, integrated with augmented reality technology, remarkably stimulates students' interest, amplifies their learning motivation, and assists them in comprehending subject matter while efficiently tackling assignments
Optimalisasi Keamanan Rumah dengan Implementasi Sistem Notifikasi Gerbang Cerdas Berbasis Internet of Things (IoT) Ika Parma dewi; Ryan Fikri
Journal of Computer System and Informatics (JoSYC) Vol 4 No 4 (2023): August 2023
Publisher : Forum Kerjasama Pendidikan Tinggi (FKPT)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47065/josyc.v4i4.4004

Abstract

Penelitian ini bertujuan untuk mengimplementasikan sistem keamanan rumah pintar berbasis Internet of Things (IoT) guna meningkatkan efektivitas perlindungan hunian. Masalah utama dalam penelitian ini adalah mencapai sinkronisasi yang efektif antara perangkat smartphone Android sebagai antarmuka pengontrol dan mikrokontroler ESP8266 sebagai pusat pengendalian pintu gerbang melalui protokol MQTT. Proses optimalisasi dilakukan dengan melakukan pengiriman instruksi ke mikrokontroler ESP8266 yang dilaksanakan melalui protokol Message Queuing Telemetry Transport (MQTT). Sistem gerbang pintar yang dikembangkan merupakan solusi inovatif yang bertujuan untuk meningkatkan keamanan hunian. Dalam penelitian ini, dikembangkan sistem gerbang pintar yang menggunakan antarmuka kontrol Android yang terbagi menjadi tiga komponen utama. Komponen pertama adalah unit power supply yang menyediakan tegangan 12 volt, yang diperoleh dari adaptor guna menjaga stabilitas operasional sistem. Komponen kedua berperan sebagai bagian input, mengintegrasikan sensor magnet untuk mendeteksi pergerakan gerbang secara akurat. Sedangkan komponen ketiga adalah bagian output yang mencakup LED dan buzzer sebagai sarana notifikasi visual dan auditif, memberitahukan pengguna mengenai status gerbang. Di samping itu, sistem ini juga memiliki kapabilitas untuk mengirimkan pemberitahuan melalui aplikasi Telegram, memungkinkan pengguna mendapatkan informasi real-time mengenai kondisi gerbang dari jarak jauh. Uji coba dilakukan selama periode 10 hari guna mengevaluasi kelayakan sistem pada gerbang rumah sebagai lokasi penelitian. Hasil dari penelitian ini menunjukkan bahwa sistem gerbang cerdas berbasis IoT yang dikembangkan berhasil meningkatkan keamanan rumah secara efektif. Dengan integrasi notifikasi visual, suara, dan pesan melalui aplikasi Telegram, pengguna dapat memantau status gerbang dari jarak jauh dengan akurat dan real-time. Penelitian ini memberikan kontribusi penting dalam pengembangan teknologi keamanan rumah cerdas berbasis IoT, membuka peluang untuk penerapan yang lebih luas dalam skala yang lebih besar. Penelitian ini memberikan kontribusi signifikan dalam pengembangan sistem keamanan rumah pintar berbasis IoT, membuka peluang luas untuk penerapan teknologi serupa dalam skala yang lebih besar di masa mendatang
An internet of things-driven smart key system with real-time alerts: innovations in hotel security Jaya, Putra; Fikri, Ryan; Samala, Agariadne Dwinggo; Sanjaya, Dimas
International Journal of Reconfigurable and Embedded Systems (IJRES) Vol 14, No 1: March 2025
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijres.v14.i1.pp145-156

Abstract

This paper presents an innovative smart key system designed to enhance the safety and convenience of hotel guests. The system employs an iterative, agile approach encompassing the phases of requirement analysis, design, implementation, and testing. Key components of the input circuitry include limit switches, RFID-RC522 and SW420 vibration sensors, which collectively gather data. This data is processed using an Arduino Uno microcontroller and integrated with internet of things (IoT) technology. On the output side, the system incorporates a solenoid lock and is capable of promptly notifying users via Telegram in response to unauthorized access attempts. Importantly, the system can distinguish between vibrations caused by unauthorized entry and those from legitimate usage. Rigorous testing validates its efficacy, issuing Telegram alerts promptly when detecting security breaches. This technological advancement significantly enhances hotel room security, providing an intelligent real-time solution. The fusion of IoT, Arduino microcontroller, and precise sensor configuration underscores the system's reliability, setting new benchmarks for security in the hospitality sector. The comprehensive approach detailed in this paper offers valuable insights applicable to a wide range of security applications.
Development of IoT Learning Media for Hybrid Learning Using Wokwi Simulation Anori, Sartika; Fikri, Ryan; Jalinus, Nizwardi; Ernawati, Ernawati; Fadhilah, Fadhilah
Voteteknika (Vocational Teknik Elektronika dan Informatika) Vol 13, No 4 (2025): Voteteknika (Vocational Teknik Elektronika dan Informatika)
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/voteteknika.v13i4.136927

Abstract

The rapid development of Internet of Things (IoT) technology requires learning media that are able to support practical competencies in flexible learning environments. However, IoT learning implementation in hybrid learning faces major challenges related to limited laboratory facilities and hardware availability. This study aims to develop IoT learning media based on hybrid learning using Wokwi Simulation as a virtual laboratory solution. The research employed a Research and Development (R&D) approach using the 4D development model, consisting of define, design, develop, and disseminate stages. The feasibility of the developed media was evaluated through expert validation and practicality testing. Validation involved three subject matter experts and three media experts, analyzed using Aiken’s V coefficient. The results showed that the learning media achieved high validity, with an average Aiken’s V value of 0.846 from material experts and 0.929 from media experts. Practicality testing conducted with 15 students resulted in a practicality level of 91.33%, categorized as very practical. These findings indicate that the developed IoT learning media is valid, practical, and suitable for supporting hybrid learning. The integration of Wokwi Simulation provides flexible access, reduces dependency on physical hardware, and enhances students’ learning experiences in IoT practical activities.Keywords— IoT, Hybrid Learning, Learning Media, Wokwi Simulation, Virtual Laboratory.
Performance Analysis of an ESP32-Based Integrated Smart Home Access System: A Laboratory Scale Study Fikri, Ryan; Dwinggo Samala, Agariadne; Faiza, Delsina; Almasri, Almasri
Voteteknika (Vocational Teknik Elektronika dan Informatika) Vol 13, No 4 (2025): Voteteknika (Vocational Teknik Elektronika dan Informatika)
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/voteteknika.v13i4.136492

Abstract

This study developed and evaluated an integrated Internet of Things (IoT)-based access control system that unifies residential gate operation, garage door automation, and garage lighting within a single platform. Conventional home automation deployments typically address only one function at a time, resulting in fragmented control and limited interaction between subsystems. Compared to prior smart home implementations that focus on single subsystems, the proposed platform jointly manages gate, garage door, and lighting and reports scenario-based reliability metrics. To address this gap, the proposed system used an ESP32 microcontroller as the central controller, ultrasonic distance sensors for vehicle detection, servo motors for mechanical actuation, and a relay module for lighting control. A mobile application built with the Blynk platform provided real-time monitoring and remote control via smartphone. The prototype was tested under three scenarios-manual mobile control, fully automatic sensor-triggered operation, and combined operation-with 20 repeated cycles per scenario. Performance metrics included servo actuation time, communication latency between the mobile application and the ESP32, sensor accuracy, and operational reliability. The gate and garage door achieved opening times of approximately 1.0-1.2 s and 1.5 s, respectively, while end-to-end communication latency remained between 300 ms and 480 ms across all tests. Ultrasonic distance measurements showed a maximum error of 1.8 cm and an average error below 1.2 cm, with no system failures in any scenario. These results demonstrate that the integrated design is technically feasible, reliable, and suitable as a cost-effective foundation for residential access control.  Future work will focus on scaling the prototype toward full-size installations and extending integration with additional smart home services.
Pembuatan Alat Monitoring dan Kontrol Tanaman Cabai berbasis Internet of Things (IoT) Elgi, Elgi; Fikri, Ryan
TSAQOFAH Vol 5 No 4 (2025): JULI
Publisher : Lembaga Yasin AlSys

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58578/tsaqofah.v5i4.6398

Abstract

This study is motivated by challenges in chili cultivation, particularly the need for timely irrigation and pesticide spraying, as well as monitoring environmental humidity and temperature, which significantly affect plant productivity. The objective of this research is to design and develop an Internet of Things (IoT)-based monitoring and control system to enhance the efficiency of chili plant care. The system was developed using the Waterfall method, encompassing requirement analysis, design, implementation, and testing stages. Key components include a soil moisture sensor for detecting soil humidity, a DHT11 sensor for measuring air temperature and humidity, and an ESP32 microcontroller integrated with the Blynk application for remote control. Testing results show that the sensors function accurately, with an average temperature measurement error of 0.3%. The automated irrigation system activates when soil moisture falls below a set threshold, and pesticide spraying can be remotely controlled via smartphone. The study concludes that the developed system is effective in supporting precision agriculture practices and contributes to improving the productivity and efficiency of modern chili cultivation.
Rancang Bangun Sistem Pendeteksi serta Pengusir Tikus Menggunakan Stimulus Auditori dan Visual pada Lahan Pesawahan Berbasis Mikrokontroler Putra, Riski Mai; Almasri, Almasri; Jaya, Putra; Fikri, Ryan
TSAQOFAH Vol 6 No 3 (2026): MEI
Publisher : Lembaga Yasin AlSys

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58578/tsaqofah.v6i3.9625

Abstract

Rats are one of the main causes of reduced rice production in Indonesia because they attack crops at various growth stages, whereas the control methods commonly used by farmers, such as chemical poisons and mechanical traps, are considered less effective in the long term and have the potential to cause negative environmental impacts. This study aims to design and develop a rat detection and repellent system using a combination of auditory stimuli in the form of ultrasonic waves and visual stimuli in the form of strobe lights based on a microcontroller. This system uses Arduino UNO as the main controller integrated with Passive Infrared (PIR) sensors and ultrasonic sensors to detect the presence of rats. The research method included the stages of needs analysis, system design, hardware and software implementation, and system testing in a rice field environment. The test results showed that the system was able to operate automatically and effectively repel rats through a combination of sound and light stimuli without using hazardous chemicals. These findings affirm that the designed system has the potential to become an alternative solution that is environmentally friendly, energy-efficient, and easy to operate in supporting rat pest control in rice fields.
Sistem Kontrol Putaran Motor DC Berbasis Mikrokontroler Arduino Menggunakan Metode PID Saputra, Delas Agus; Agustiarmi, Winda; Fikri, Ryan; Zulwisli
Journal of Authentic Research Vol. 5 No. 3 (2026): August
Publisher : LITPAM

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36312/qjtmpm75

Abstract

Pengendalian posisi motor DC merupakan salah satu materi penting dalam pembelajaran otomasi dan kendali di pendidikan vokasi, khususnya pada aplikasi yang menuntut ketepatan gerak seperti lengan robot, conveyor, dan mekanisme positioning presisi. Namun, pendekatan kendali open-loop maupun kendali kecepatan konvensional masih menyisakan persoalan berupa error posisi yang besar, respons yang lambat, serta ketidakstabilan ketika sistem menghadapi gangguan beban. Penelitian ini bertujuan merancang dan mengimplementasikan prototipe sistem kontrol posisi motor DC berbasis mikrokontroler Arduino Uno menggunakan metode Proportional-Integral-Derivative (PID). Sistem menggunakan mikrokontroler Arduino Uno sebagai pengendali utama, motor DC bergearbox dengan encoder incremental sebagai aktuator sekaligus sensor umpan balik, motor driver sebagai penguat daya, serta LCD I2C sebagai media tampilan informasi secara real-time. Pengujian dilakukan pada dua nilai setpoint kecepatan putar yaitu 150 RPM dan 200 RPM, masing-masing sebanyak sepuluh kali percobaan dengan pencatatan nilai RPM aktual dan persentase error terhadap setpoint. Hasil pengujian pada setpoint 150 RPM menunjukkan variasi nilai RPM antara 70,34 RPM hingga 244,43 RPM, dengan hasil terbaik pada percobaan ketujuh (152,99 RPM, error 1,99%) dan overshoot terbesar pada percobaan kesembilan (244,43 RPM). Pada pengujian setpoint 200 RPM, tiga percobaan awal tertahan pada 116,06 RPM (error 41,97%) sebelum sistem stabil pada kisaran 195–204 RPM dengan error terkecil 0,65% pada percobaan kedelapan. Hasil penelitian membuktikan bahwa sistem kendali PID mampu mengarahkan motor DC mendekati nilai setpoint yang ditetapkan, meskipun parameter Kp, Ki, dan Kd masih memerlukan penyetelan lebih lanjut agar respons sistem lebih presisi.
Sistem Kontrol Level Air Satu Tangki Berbasis Kontrol PID dengan Anti Windup Mubarok, Ridho Jovi; Zulwisli; Diputra, Yudhi; Fikri, Ryan
Journal of Authentic Research Vol. 5 No. 3 (2026): August
Publisher : LITPAM

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36312/kmnc9797

Abstract

Sistem kontrol level air merupakan materi penting dalam pembelajaran otomasi dan kontrol proses di pendidikan vokasi. Namun, keterbatasan media praktikum yang representatif menyebabkan mahasiswa kesulitan memahami konsep pengendalian level fluida, khususnya penerapan kontrol Proportional-Integral-Derivative (PID) dan fenomena integral windup. Penelitian ini bertujuan merancang dan membangun trainer sistem kontrol level air satu tangki berbasis kontrol PID dengan mekanisme anti-windup sebagai media pembelajaran praktikum. Sistem menggunakan mikrokontroler Arduino Uno, sensor ultrasonik HC-SR04 untuk pengukuran real-time, pompa DC 12V sebagai aktuator, serta platform MATLAB untuk visualisasi data. Parameter PID yang digunakan adalah Kp=2,5, Ki=0,8, dan Kd=0,1 yang diperoleh melalui metode trial-error dengan periode sampling 100 ms. Pengujian dilakukan pada setpoint 10 cm dan 5 cm masing-masing sepuluh kali percobaan. Hasil menunjukkan sistem mencapai steady-state pada kedua setpoint dengan error rata-rata 0,06 cm untuk setpoint 10 cm dan 0,08 cm untuk setpoint 5 cm, serta waktu settling rata-rata 45 detik dan 38 detik. Mekanisme anti-windup terbukti efektif mencegah akumulasi integral berlebih, yang teridentifikasi ketika nilai PWM turun ke 0 untuk mencegah overshoot pada pengujian setpoint 5 cm. Trainer yang dikembangkan terbukti layak sebagai media pembelajaran sistem kontrol proses di pendidikan vokasi.
Co-Authors Agariadne Dwinggo Samala Agariadne Dwinggo Samala Agustiarmi, Winda Almasri Almasri Anori, Sartika Delsina Faiza Delsina Faiza Efrizon Efrizon Elgi, Elgi Ernawati Ernawati Fadhilah Fadhilah Fadhli Ranuharja Firmansyah, Muhammad Qodri Ika Parma Dewi Jaya, Putra Lativa Mursyida Mubarok, Ridho Jovi Nabilla, Syalsa Nizwardi Jalinus Putra Jaya Putra, Riski Mai Sandra, Randi Proska Sanjaya, Dimas Saputra, Delas Agus Thamrin Thamrin Yudhi Diputra Zulwisli .